Leetcode Solutions

This is section lists all my leetcode solutions.

Leetcode 1 Solution

This article provides solution to leetcode question 1 (two-sum).

Leetcode 2 Solution

This article provides solution to leetcode question 2 (add-two-numbers).

Leetcode 3 Solution

This article provides solution to leetcode question 3 (longest-substring-without-repeating-characters).

Leetcode 4 Solution

This article provides solution to leetcode question 4 (median-of-two-sorted-arrays).

Leetcode 5 Solution

This article provides solution to leetcode question 5 (longest-palindromic-substring).

Leetcode 6 Solution

This article provides solution to leetcode question 6 (zigzag-conversion).

Leetcode 7 Solution

This article provides solution to leetcode question 7 (reverse-integer).

Leetcode 8 Solution

This article provides solution to leetcode question 8 (string-to-integer-atoi).

Leetcode 9 Solution

This article provides solution to leetcode question 9 (palindrome-number).

Leetcode 10 Solution

This article provides solution to leetcode question 10 (regular-expression-matching).

Leetcode 11 Solution

This article provides solution to leetcode question 11 (container-with-most-water).

Leetcode 12 Solution

This article provides solution to leetcode question 12 (integer-to-roman).

Leetcode 13 Solution

This article provides solution to leetcode question 13 (roman-to-integer).

Leetcode 14 Solution

This article provides solution to leetcode question 14 (longest-common-prefix).

Leetcode 15 Solution

This article provides solution to leetcode question 15 (3sum).

Leetcode 16 Solution

This article provides solution to leetcode question 16 (3sum-closest).

Leetcode 17 Solution

This article provides solution to leetcode question 17 (letter-combinations-of-a-phone-number).

Leetcode 18 Solution

This article provides solution to leetcode question 18 (4sum).

Leetcode 19 Solution

This article provides solution to leetcode question 19 (remove-nth-node-from-end-of-list).

Leetcode 20 Solution

This article provides solution to leetcode question 20 (valid-parentheses).

Leetcode 21 Solution

This article provides solution to leetcode question 21 (merge-two-sorted-lists).

Leetcode 22 Solution

This article provides solution to leetcode question 22 (generate-parentheses).

Leetcode 23 Solution

This article provides solution to leetcode question 23 (merge-k-sorted-lists).

Leetcode 24 Solution

This article provides solution to leetcode question 24 (swap-nodes-in-pairs).

Leetcode 25 Solution

This article provides solution to leetcode question 25 (reverse-nodes-in-k-group).

Leetcode 26 Solution

This article provides solution to leetcode question 26 (remove-duplicates-from-sorted-array).

Leetcode 27 Solution

This article provides solution to leetcode question 27 (remove-element).

Leetcode 28 Solution

This article provides solution to leetcode question 28 (implement-strstr).

Leetcode 29 Solution

This article provides solution to leetcode question 29 (divide-two-integers).

Leetcode 30 Solution

This article provides solution to leetcode question 30 (substring-with-concatenation-of-all-words).

Leetcode 31 Solution

This article provides solution to leetcode question 31 (next-permutation).

Leetcode 32 Solution

This article provides solution to leetcode question 32 (longest-valid-parentheses).

Leetcode 33 Solution

This article provides solution to leetcode question 33 (search-in-rotated-sorted-array).

Leetcode 34 Solution

This article provides solution to leetcode question 34 (find-first-and-last-position-of-element-in-sorted-array).

Leetcode 35 Solution

This article provides solution to leetcode question 35 (search-insert-position).

Leetcode 36 Solution

This article provides solution to leetcode question 36 (valid-sudoku).

Leetcode 37 Solution

This article provides solution to leetcode question 37 (sudoku-solver).

Leetcode 38 Solution

This article provides solution to leetcode question 38 (count-and-say).

Leetcode 39 Solution

This article provides solution to leetcode question 39 (combination-sum).

Leetcode 40 Solution

This article provides solution to leetcode question 40 (combination-sum-ii).

Leetcode 41 Solution

This article provides solution to leetcode question 41 (first-missing-positive).

Leetcode 42 Solution

This article provides solution to leetcode question 42 (trapping-rain-water).

Leetcode 43 Solution

This article provides solution to leetcode question 43 (multiply-strings).

Leetcode 44 Solution

This article provides solution to leetcode question 44 (wildcard-matching).

Leetcode 45 Solution

This article provides solution to leetcode question 45 (jump-game-ii).

Leetcode 46 Solution

This article provides solution to leetcode question 46 (permutations).

Leetcode 47 Solution

This article provides solution to leetcode question 47 (permutations-ii).

Leetcode 48 Solution

This article provides solution to leetcode question 48 (rotate-image).

Leetcode 49 Solution

This article provides solution to leetcode question 49 (group-anagrams).

Leetcode 50 Solution

This article provides solution to leetcode question 50 (powx-n).

Leetcode 51 Solution

This article provides solution to leetcode question 51 (n-queens).

Leetcode 52 Solution

This article provides solution to leetcode question 52 (n-queens-ii).

Leetcode 53 Solution

This article provides solution to leetcode question 53 (maximum-subarray).

Leetcode 54 Solution

This article provides solution to leetcode question 54 (spiral-matrix).

Leetcode 55 Solution

This article provides solution to leetcode question 55 (jump-game).

Leetcode 56 Solution

This article provides solution to leetcode question 56 (merge-intervals).

Leetcode 57 Solution

This article provides solution to leetcode question 57 (insert-interval).

Leetcode 58 Solution

This article provides solution to leetcode question 58 (length-of-last-word).

Leetcode 59 Solution

This article provides solution to leetcode question 59 (spiral-matrix-ii).

Leetcode 60 Solution

This article provides solution to leetcode question 60 (permutation-sequence).

Leetcode 61 Solution

This article provides solution to leetcode question 61 (rotate-list).

Leetcode 62 Solution

This article provides solution to leetcode question 62 (unique-paths).

Leetcode 63 Solution

This article provides solution to leetcode question 63 (unique-paths-ii).

Leetcode 64 Solution

This article provides solution to leetcode question 64 (minimum-path-sum).

Leetcode 65 Solution

This article provides solution to leetcode question 65 (valid-number).

Leetcode 66 Solution

This article provides solution to leetcode question 66 (plus-one).

Leetcode 67 Solution

This article provides solution to leetcode question 67 (add-binary).

Leetcode 68 Solution

This article provides solution to leetcode question 68 (text-justification).

Leetcode 69 Solution

This article provides solution to leetcode question 69 (sqrtx).

Leetcode 70 Solution

This article provides solution to leetcode question 70 (climbing-stairs).

Leetcode 71 Solution

This article provides solution to leetcode question 71 (simplify-path).

Leetcode 72 Solution

This article provides solution to leetcode question 72 (edit-distance).

Leetcode 73 Solution

This article provides solution to leetcode question 73 (set-matrix-zeroes).

Leetcode 74 Solution

This article provides solution to leetcode question 74 (search-a-2d-matrix).

Leetcode 75 Solution

This article provides solution to leetcode question 75 (sort-colors).

Leetcode 76 Solution

This article provides solution to leetcode question 76 (minimum-window-substring).

Leetcode 77 Solution

This article provides solution to leetcode question 77 (combinations).

Leetcode 78 Solution

This article provides solution to leetcode question 78 (subsets).

Leetcode 79 Solution

This article provides solution to leetcode question 79 (word-search).

Leetcode 80 Solution

This article provides solution to leetcode question 80 (remove-duplicates-from-sorted-array-ii).

Leetcode 81 Solution

This article provides solution to leetcode question 81 (search-in-rotated-sorted-array-ii).

Leetcode 82 Solution

This article provides solution to leetcode question 82 (remove-duplicates-from-sorted-list-ii).

Leetcode 83 Solution

This article provides solution to leetcode question 83 (remove-duplicates-from-sorted-list).

Leetcode 84 Solution

This article provides solution to leetcode question 84 (largest-rectangle-in-histogram).

Leetcode 85 Solution

This article provides solution to leetcode question 85 (maximal-rectangle).

Leetcode 86 Solution

This article provides solution to leetcode question 86 (partition-list).

Leetcode 87 Solution

This article provides solution to leetcode question 87 (scramble-string).

Leetcode 88 Solution

This article provides solution to leetcode question 88 (merge-sorted-array).

Leetcode 89 Solution

This article provides solution to leetcode question 89 (gray-code).

Leetcode 90 Solution

This article provides solution to leetcode question 90 (subsets-ii).

Leetcode 91 Solution

This article provides solution to leetcode question 91 (decode-ways).

Leetcode 92 Solution

This article provides solution to leetcode question 92 (reverse-linked-list-ii).

Leetcode 93 Solution

This article provides solution to leetcode question 93 (restore-ip-addresses).

Leetcode 94 Solution

This article provides solution to leetcode question 94 (binary-tree-inorder-traversal).

Leetcode 95 Solution

This article provides solution to leetcode question 95 (unique-binary-search-trees-ii).

Leetcode 96 Solution

This article provides solution to leetcode question 96 (unique-binary-search-trees).

Leetcode 97 Solution

This article provides solution to leetcode question 97 (interleaving-string).

Leetcode 98 Solution

This article provides solution to leetcode question 98 (validate-binary-search-tree).

Leetcode 99 Solution

This article provides solution to leetcode question 99 (recover-binary-search-tree).

Leetcode 100 Solution

This article provides solution to leetcode question 100 (same-tree).

Leetcode 101 Solution

This article provides solution to leetcode question 101 (symmetric-tree).

Leetcode 102 Solution

This article provides solution to leetcode question 102 (binary-tree-level-order-traversal).

Leetcode 103 Solution

This article provides solution to leetcode question 103 (binary-tree-zigzag-level-order-traversal).

Leetcode 104 Solution

This article provides solution to leetcode question 104 (maximum-depth-of-binary-tree).

Leetcode 105 Solution

This article provides solution to leetcode question 105 (construct-binary-tree-from-preorder-and-inorder-traversal).

Leetcode 106 Solution

This article provides solution to leetcode question 106 (construct-binary-tree-from-inorder-and-postorder-traversal).

Leetcode 107 Solution

This article provides solution to leetcode question 107 (binary-tree-level-order-traversal-ii).

Leetcode 108 Solution

This article provides solution to leetcode question 108 (convert-sorted-array-to-binary-search-tree).

Leetcode 109 Solution

This article provides solution to leetcode question 109 (convert-sorted-list-to-binary-search-tree).

Leetcode 110 Solution

This article provides solution to leetcode question 110 (balanced-binary-tree).

Leetcode 111 Solution

This article provides solution to leetcode question 111 (minimum-depth-of-binary-tree).

Leetcode 112 Solution

This article provides solution to leetcode question 112 (path-sum).

Leetcode 113 Solution

This article provides solution to leetcode question 113 (path-sum-ii).

Leetcode 114 Solution

This article provides solution to leetcode question 114 (flatten-binary-tree-to-linked-list).

Leetcode 115 Solution

This article provides solution to leetcode question 115 (distinct-subsequences).

Leetcode 116 Solution

This article provides solution to leetcode question 116 (populating-next-right-pointers-in-each-node).

Leetcode 117 Solution

This article provides solution to leetcode question 117 (populating-next-right-pointers-in-each-node-ii).

Leetcode 118 Solution

This article provides solution to leetcode question 118 (pascals-triangle).

Leetcode 119 Solution

This article provides solution to leetcode question 119 (pascals-triangle-ii).

Leetcode 120 Solution

This article provides solution to leetcode question 120 (triangle).

Leetcode 121 Solution

This article provides solution to leetcode question 121 (best-time-to-buy-and-sell-stock).

Leetcode 122 Solution

This article provides solution to leetcode question 122 (best-time-to-buy-and-sell-stock-ii).

Leetcode 123 Solution

This article provides solution to leetcode question 123 (best-time-to-buy-and-sell-stock-iii).

Leetcode 124 Solution

This article provides solution to leetcode question 124 (binary-tree-maximum-path-sum).

Leetcode 125 Solution

This article provides solution to leetcode question 125 (valid-palindrome).

Leetcode 126 Solution

This article provides solution to leetcode question 126 (word-ladder-ii).

Leetcode 127 Solution

This article provides solution to leetcode question 127 (word-ladder).

Leetcode 128 Solution

This article provides solution to leetcode question 128 (longest-consecutive-sequence).

Leetcode 129 Solution

This article provides solution to leetcode question 129 (sum-root-to-leaf-numbers).

Leetcode 130 Solution

This article provides solution to leetcode question 130 (surrounded-regions).

Leetcode 131 Solution

This article provides solution to leetcode question 131 (palindrome-partitioning).

Leetcode 132 Solution

This article provides solution to leetcode question 132 (palindrome-partitioning-ii).

Leetcode 133 Solution

This article provides solution to leetcode question 133 (clone-graph).

Leetcode 134 Solution

This article provides solution to leetcode question 134 (gas-station).

Leetcode 135 Solution

This article provides solution to leetcode question 135 (candy).

Leetcode 136 Solution

This article provides solution to leetcode question 136 (single-number).

Leetcode 137 Solution

This article provides solution to leetcode question 137 (single-number-ii).

Leetcode 138 Solution

This article provides solution to leetcode question 138 (copy-list-with-random-pointer).

Leetcode 139 Solution

This article provides solution to leetcode question 139 (word-break).

Leetcode 140 Solution

This article provides solution to leetcode question 140 (word-break-ii).

Leetcode 141 Solution

This article provides solution to leetcode question 141 (linked-list-cycle).

Leetcode 142 Solution

This article provides solution to leetcode question 142 (linked-list-cycle-ii).

Leetcode 143 Solution

This article provides solution to leetcode question 143 (reorder-list).

Leetcode 144 Solution

This article provides solution to leetcode question 144 (binary-tree-preorder-traversal).

Leetcode 145 Solution

This article provides solution to leetcode question 145 (binary-tree-postorder-traversal).

Leetcode 146 Solution

This article provides solution to leetcode question 146 (lru-cache).

Leetcode 147 Solution

This article provides solution to leetcode question 147 (insertion-sort-list).

Leetcode 148 Solution

This article provides solution to leetcode question 148 (sort-list).

Leetcode 149 Solution

This article provides solution to leetcode question 149 (max-points-on-a-line).

Leetcode 150 Solution

This article provides solution to leetcode question 150 (evaluate-reverse-polish-notation).

Leetcode 151 Solution

This article provides solution to leetcode question 151 (reverse-words-in-a-string).

Leetcode 152 Solution

This article provides solution to leetcode question 152 (maximum-product-subarray).

Leetcode 153 Solution

This article provides solution to leetcode question 153 (find-minimum-in-rotated-sorted-array).

Leetcode 154 Solution

This article provides solution to leetcode question 154 (find-minimum-in-rotated-sorted-array-ii).

Leetcode 155 Solution

This article provides solution to leetcode question 155 (min-stack).

Leetcode 156 Solution

This article provides solution to leetcode question 156 (binary-tree-upside-down).

Leetcode 157 Solution

This article provides solution to leetcode question 157 (read-n-characters-given-read4).

Leetcode 158 Solution

This article provides solution to leetcode question 158 (read-n-characters-given-read4-ii-call-multiple-times).

Leetcode 159 Solution

This article provides solution to leetcode question 159 (longest-substring-with-at-most-two-distinct-characters).

Leetcode 160 Solution

This article provides solution to leetcode question 160 (intersection-of-two-linked-lists).

Leetcode 161 Solution

This article provides solution to leetcode question 161 (one-edit-distance).

Leetcode 162 Solution

This article provides solution to leetcode question 162 (find-peak-element).

Leetcode 163 Solution

This article provides solution to leetcode question 163 (missing-ranges).

Leetcode 164 Solution

This article provides solution to leetcode question 164 (maximum-gap).

Leetcode 165 Solution

This article provides solution to leetcode question 165 (compare-version-numbers).

Leetcode 166 Solution

This article provides solution to leetcode question 166 (fraction-to-recurring-decimal).

Leetcode 167 Solution

This article provides solution to leetcode question 167 (two-sum-ii-input-array-is-sorted).

Leetcode 168 Solution

This article provides solution to leetcode question 168 (excel-sheet-column-title).

Leetcode 169 Solution

This article provides solution to leetcode question 169 (majority-element).

Leetcode 170 Solution

This article provides solution to leetcode question 170 (two-sum-iii-data-structure-design).

Leetcode 171 Solution

This article provides solution to leetcode question 171 (excel-sheet-column-number).

Leetcode 172 Solution

This article provides solution to leetcode question 172 (factorial-trailing-zeroes).

Leetcode 173 Solution

This article provides solution to leetcode question 173 (binary-search-tree-iterator).

Leetcode 174 Solution

This article provides solution to leetcode question 174 (dungeon-game).

Leetcode 179 Solution

This article provides solution to leetcode question 179 (largest-number).

Leetcode 186 Solution

This article provides solution to leetcode question 186 (reverse-words-in-a-string-ii).

Leetcode 187 Solution

This article provides solution to leetcode question 187 (repeated-dna-sequences).

Leetcode 188 Solution

This article provides solution to leetcode question 188 (best-time-to-buy-and-sell-stock-iv).

Leetcode 189 Solution

This article provides solution to leetcode question 189 (rotate-array).

Leetcode 190 Solution

This article provides solution to leetcode question 190 (reverse-bits).

Leetcode 191 Solution

This article provides solution to leetcode question 191 (number-of-1-bits).

Leetcode 198 Solution

This article provides solution to leetcode question 198 (house-robber).

Leetcode 199 Solution

This article provides solution to leetcode question 199 (binary-tree-right-side-view).

Leetcode 200 Solution

This article provides solution to leetcode question 200 (number-of-islands).

Leetcode 201 Solution

This article provides solution to leetcode question 201 (bitwise-and-of-numbers-range).

Leetcode 202 Solution

This article provides solution to leetcode question 202 (happy-number).

Leetcode 203 Solution

This article provides solution to leetcode question 203 (remove-linked-list-elements).

Leetcode 204 Solution

This article provides solution to leetcode question 204 (count-primes).

Leetcode 205 Solution

This article provides solution to leetcode question 205 (isomorphic-strings).

Leetcode 206 Solution

This article provides solution to leetcode question 206 (reverse-linked-list).

Leetcode 207 Solution

This article provides solution to leetcode question 207 (course-schedule).

Leetcode 208 Solution

This article provides solution to leetcode question 208 (implement-trie-prefix-tree).

Leetcode 209 Solution

This article provides solution to leetcode question 209 (minimum-size-subarray-sum).

Leetcode 210 Solution

This article provides solution to leetcode question 210 (course-schedule-ii).

Leetcode 211 Solution

This article provides solution to leetcode question 211 (design-add-and-search-words-data-structure).

Leetcode 212 Solution

This article provides solution to leetcode question 212 (word-search-ii).

Leetcode 213 Solution

This article provides solution to leetcode question 213 (house-robber-ii).

Leetcode 214 Solution

This article provides solution to leetcode question 214 (shortest-palindrome).

Leetcode 215 Solution

This article provides solution to leetcode question 215 (kth-largest-element-in-an-array).

Leetcode 216 Solution

This article provides solution to leetcode question 216 (combination-sum-iii).

Leetcode 217 Solution

This article provides solution to leetcode question 217 (contains-duplicate).

Leetcode 218 Solution

This article provides solution to leetcode question 218 (the-skyline-problem).

Leetcode 219 Solution

This article provides solution to leetcode question 219 (contains-duplicate-ii).

Leetcode 220 Solution

This article provides solution to leetcode question 220 (contains-duplicate-iii).

Leetcode 221 Solution

This article provides solution to leetcode question 221 (maximal-square).

Leetcode 222 Solution

This article provides solution to leetcode question 222 (count-complete-tree-nodes).

Leetcode 223 Solution

This article provides solution to leetcode question 223 (rectangle-area).

Leetcode 224 Solution

This article provides solution to leetcode question 224 (basic-calculator).

Leetcode 225 Solution

This article provides solution to leetcode question 225 (implement-stack-using-queues).

Leetcode 226 Solution

This article provides solution to leetcode question 226 (invert-binary-tree).

Leetcode 227 Solution

This article provides solution to leetcode question 227 (basic-calculator-ii).

Leetcode 228 Solution

This article provides solution to leetcode question 228 (summary-ranges).

Leetcode 229 Solution

This article provides solution to leetcode question 229 (majority-element-ii).

Leetcode 230 Solution

This article provides solution to leetcode question 230 (kth-smallest-element-in-a-bst).

Leetcode 231 Solution

This article provides solution to leetcode question 231 (power-of-two).

Leetcode 232 Solution

This article provides solution to leetcode question 232 (implement-queue-using-stacks).

Leetcode 233 Solution

This article provides solution to leetcode question 233 (number-of-digit-one).

Leetcode 234 Solution

This article provides solution to leetcode question 234 (palindrome-linked-list).

Leetcode 235 Solution

This article provides solution to leetcode question 235 (lowest-common-ancestor-of-a-binary-search-tree).

Leetcode 236 Solution

This article provides solution to leetcode question 236 (lowest-common-ancestor-of-a-binary-tree).

Leetcode 237 Solution

This article provides solution to leetcode question 237 (delete-node-in-a-linked-list).

Leetcode 238 Solution

This article provides solution to leetcode question 238 (product-of-array-except-self).

Leetcode 239 Solution

This article provides solution to leetcode question 239 (sliding-window-maximum).

Leetcode 240 Solution

This article provides solution to leetcode question 240 (search-a-2d-matrix-ii).

Leetcode 241 Solution

This article provides solution to leetcode question 241 (different-ways-to-add-parentheses).

Leetcode 242 Solution

This article provides solution to leetcode question 242 (valid-anagram).

Leetcode 243 Solution

This article provides solution to leetcode question 243 (shortest-word-distance).

Leetcode 244 Solution

This article provides solution to leetcode question 244 (shortest-word-distance-ii).

Leetcode 245 Solution

This article provides solution to leetcode question 245 (shortest-word-distance-iii).

Leetcode 246 Solution

This article provides solution to leetcode question 246 (strobogrammatic-number).

Leetcode 247 Solution

This article provides solution to leetcode question 247 (strobogrammatic-number-ii).

Leetcode 248 Solution

This article provides solution to leetcode question 248 (strobogrammatic-number-iii).

Leetcode 249 Solution

This article provides solution to leetcode question 249 (group-shifted-strings).

Leetcode 250 Solution

This article provides solution to leetcode question 250 (count-univalue-subtrees).

Leetcode 251 Solution

This article provides solution to leetcode question 251 (flatten-2d-vector).

Leetcode 252 Solution

This article provides solution to leetcode question 252 (meeting-rooms).

Leetcode 253 Solution

This article provides solution to leetcode question 253 (meeting-rooms-ii).

Leetcode 254 Solution

This article provides solution to leetcode question 254 (factor-combinations).

Leetcode 255 Solution

This article provides solution to leetcode question 255 (verify-preorder-sequence-in-binary-search-tree).

Leetcode 256 Solution

This article provides solution to leetcode question 256 (paint-house).

Leetcode 257 Solution

This article provides solution to leetcode question 257 (binary-tree-paths).

Leetcode 258 Solution

This article provides solution to leetcode question 258 (add-digits).

Leetcode 259 Solution

This article provides solution to leetcode question 259 (3sum-smaller).

Leetcode 260 Solution

This article provides solution to leetcode question 260 (single-number-iii).

Leetcode 261 Solution

This article provides solution to leetcode question 261 (graph-valid-tree).

Leetcode 263 Solution

This article provides solution to leetcode question 263 (ugly-number).

Leetcode 264 Solution

This article provides solution to leetcode question 264 (ugly-number-ii).

Leetcode 265 Solution

This article provides solution to leetcode question 265 (paint-house-ii).

Leetcode 266 Solution

This article provides solution to leetcode question 266 (palindrome-permutation).

Leetcode 267 Solution

This article provides solution to leetcode question 267 (palindrome-permutation-ii).

Leetcode 268 Solution

This article provides solution to leetcode question 268 (missing-number).

Leetcode 269 Solution

This article provides solution to leetcode question 269 (alien-dictionary).

Leetcode 270 Solution

This article provides solution to leetcode question 270 (closest-binary-search-tree-value).

Leetcode 271 Solution

This article provides solution to leetcode question 271 (encode-and-decode-strings).

Leetcode 272 Solution

This article provides solution to leetcode question 272 (closest-binary-search-tree-value-ii).

Leetcode 273 Solution

This article provides solution to leetcode question 273 (integer-to-english-words).

Leetcode 274 Solution

This article provides solution to leetcode question 274 (h-index).

Leetcode 275 Solution

This article provides solution to leetcode question 275 (h-index-ii).

Leetcode 276 Solution

This article provides solution to leetcode question 276 (paint-fence).

Leetcode 277 Solution

This article provides solution to leetcode question 277 (find-the-celebrity).

Leetcode 278 Solution

This article provides solution to leetcode question 278 (first-bad-version).

Leetcode 279 Solution

This article provides solution to leetcode question 279 (perfect-squares).

Leetcode 280 Solution

This article provides solution to leetcode question 280 (wiggle-sort).

Leetcode 281 Solution

This article provides solution to leetcode question 281 (zigzag-iterator).

Leetcode 282 Solution

This article provides solution to leetcode question 282 (expression-add-operators).

Leetcode 283 Solution

This article provides solution to leetcode question 283 (move-zeroes).

Leetcode 284 Solution

This article provides solution to leetcode question 284 (peeking-iterator).

Leetcode 285 Solution

This article provides solution to leetcode question 285 (inorder-successor-in-bst).

Leetcode 286 Solution

This article provides solution to leetcode question 286 (walls-and-gates).

Leetcode 287 Solution

This article provides solution to leetcode question 287 (find-the-duplicate-number).

Leetcode 288 Solution

This article provides solution to leetcode question 288 (unique-word-abbreviation).

Leetcode 289 Solution

This article provides solution to leetcode question 289 (game-of-life).

Leetcode 290 Solution

This article provides solution to leetcode question 290 (word-pattern).

Leetcode 291 Solution

This article provides solution to leetcode question 291 (word-pattern-ii).

Leetcode 292 Solution

This article provides solution to leetcode question 292 (nim-game).

Leetcode 293 Solution

This article provides solution to leetcode question 293 (flip-game).

Leetcode 294 Solution

This article provides solution to leetcode question 294 (flip-game-ii).

Leetcode 295 Solution

This article provides solution to leetcode question 295 (find-median-from-data-stream).

Leetcode 296 Solution

This article provides solution to leetcode question 296 (best-meeting-point).

Leetcode 297 Solution

This article provides solution to leetcode question 297 (serialize-and-deserialize-binary-tree).

Leetcode 298 Solution

This article provides solution to leetcode question 298 (binary-tree-longest-consecutive-sequence).

Leetcode 299 Solution

This article provides solution to leetcode question 299 (bulls-and-cows).

Leetcode 300 Solution

This article provides solution to leetcode question 300 (longest-increasing-subsequence).

Leetcode 301 Solution

This article provides solution to leetcode question 301 (remove-invalid-parentheses).

Leetcode 302 Solution

This article provides solution to leetcode question 302 (smallest-rectangle-enclosing-black-pixels).

Leetcode 303 Solution

This article provides solution to leetcode question 303 (range-sum-query-immutable).

Leetcode 304 Solution

This article provides solution to leetcode question 304 (range-sum-query-2d-immutable).

Leetcode 305 Solution

This article provides solution to leetcode question 305 (number-of-islands-ii).

Leetcode 306 Solution

This article provides solution to leetcode question 306 (additive-number).

Leetcode 307 Solution

This article provides solution to leetcode question 307 (range-sum-query-mutable).

Leetcode 308 Solution

This article provides solution to leetcode question 308 (range-sum-query-2d-mutable).

Leetcode 309 Solution

This article provides solution to leetcode question 309 (best-time-to-buy-and-sell-stock-with-cooldown).

Leetcode 310 Solution

This article provides solution to leetcode question 310 (minimum-height-trees).

Leetcode 311 Solution

This article provides solution to leetcode question 311 (sparse-matrix-multiplication).

Leetcode 312 Solution

This article provides solution to leetcode question 312 (burst-balloons).

Leetcode 313 Solution

This article provides solution to leetcode question 313 (super-ugly-number).

Leetcode 314 Solution

This article provides solution to leetcode question 314 (binary-tree-vertical-order-traversal).

Leetcode 315 Solution

This article provides solution to leetcode question 315 (count-of-smaller-numbers-after-self).

Leetcode 316 Solution

This article provides solution to leetcode question 316 (remove-duplicate-letters).

Leetcode 317 Solution

This article provides solution to leetcode question 317 (shortest-distance-from-all-buildings).

Leetcode 318 Solution

This article provides solution to leetcode question 318 (maximum-product-of-word-lengths).

Leetcode 319 Solution

This article provides solution to leetcode question 319 (bulb-switcher).

Leetcode 320 Solution

This article provides solution to leetcode question 320 (generalized-abbreviation).

Leetcode 321 Solution

This article provides solution to leetcode question 321 (create-maximum-number).

Leetcode 322 Solution

This article provides solution to leetcode question 322 (coin-change).

Leetcode 323 Solution

This article provides solution to leetcode question 323 (number-of-connected-components-in-an-undirected-graph).

Leetcode 324 Solution

This article provides solution to leetcode question 324 (wiggle-sort-ii).

Leetcode 325 Solution

This article provides solution to leetcode question 325 (maximum-size-subarray-sum-equals-k).

Leetcode 326 Solution

This article provides solution to leetcode question 326 (power-of-three).

Leetcode 327 Solution

This article provides solution to leetcode question 327 (count-of-range-sum).

Leetcode 328 Solution

This article provides solution to leetcode question 328 (odd-even-linked-list).

Leetcode 329 Solution

This article provides solution to leetcode question 329 (longest-increasing-path-in-a-matrix).

Leetcode 330 Solution

This article provides solution to leetcode question 330 (patching-array).

Leetcode 331 Solution

This article provides solution to leetcode question 331 (verify-preorder-serialization-of-a-binary-tree).

Leetcode 332 Solution

This article provides solution to leetcode question 332 (reconstruct-itinerary).

Leetcode 333 Solution

This article provides solution to leetcode question 333 (largest-bst-subtree).

Leetcode 334 Solution

This article provides solution to leetcode question 334 (increasing-triplet-subsequence).

Leetcode 335 Solution

This article provides solution to leetcode question 335 (self-crossing).

Leetcode 336 Solution

This article provides solution to leetcode question 336 (palindrome-pairs).

Leetcode 337 Solution

This article provides solution to leetcode question 337 (house-robber-iii).

Leetcode 338 Solution

This article provides solution to leetcode question 338 (counting-bits).

Leetcode 339 Solution

This article provides solution to leetcode question 339 (nested-list-weight-sum).

Leetcode 340 Solution

This article provides solution to leetcode question 340 (longest-substring-with-at-most-k-distinct-characters).

Leetcode 341 Solution

This article provides solution to leetcode question 341 (flatten-nested-list-iterator).

Leetcode 342 Solution

This article provides solution to leetcode question 342 (power-of-four).

Leetcode 343 Solution

This article provides solution to leetcode question 343 (integer-break).

Leetcode 344 Solution

This article provides solution to leetcode question 344 (reverse-string).

Leetcode 345 Solution

This article provides solution to leetcode question 345 (reverse-vowels-of-a-string).

Leetcode 346 Solution

This article provides solution to leetcode question 346 (moving-average-from-data-stream).

Leetcode 347 Solution

This article provides solution to leetcode question 347 (top-k-frequent-elements).

Leetcode 348 Solution

This article provides solution to leetcode question 348 (design-tic-tac-toe).

Leetcode 349 Solution

This article provides solution to leetcode question 349 (intersection-of-two-arrays).

Leetcode 350 Solution

This article provides solution to leetcode question 350 (intersection-of-two-arrays-ii).

Leetcode 351 Solution

This article provides solution to leetcode question 351 (android-unlock-patterns).

Leetcode 352 Solution

This article provides solution to leetcode question 352 (data-stream-as-disjoint-intervals).

Leetcode 353 Solution

This article provides solution to leetcode question 353 (design-snake-game).

Leetcode 354 Solution

This article provides solution to leetcode question 354 (russian-doll-envelopes).

Leetcode 355 Solution

This article provides solution to leetcode question 355 (design-twitter).

Leetcode 356 Solution

This article provides solution to leetcode question 356 (line-reflection).

Leetcode 357 Solution

This article provides solution to leetcode question 357 (count-numbers-with-unique-digits).

Leetcode 358 Solution

This article provides solution to leetcode question 358 (rearrange-string-k-distance-apart).

Leetcode 359 Solution

This article provides solution to leetcode question 359 (logger-rate-limiter).

Leetcode 360 Solution

This article provides solution to leetcode question 360 (sort-transformed-array).

Leetcode 361 Solution

This article provides solution to leetcode question 361 (bomb-enemy).

Leetcode 362 Solution

This article provides solution to leetcode question 362 (design-hit-counter).

Leetcode 363 Solution

This article provides solution to leetcode question 363 (max-sum-of-rectangle-no-larger-than-k).

Leetcode 364 Solution

This article provides solution to leetcode question 364 (nested-list-weight-sum-ii).

Leetcode 365 Solution

This article provides solution to leetcode question 365 (water-and-jug-problem).

Leetcode 366 Solution

This article provides solution to leetcode question 366 (find-leaves-of-binary-tree).

Leetcode 367 Solution

This article provides solution to leetcode question 367 (valid-perfect-square).

Leetcode 368 Solution

This article provides solution to leetcode question 368 (largest-divisible-subset).

Leetcode 369 Solution

This article provides solution to leetcode question 369 (plus-one-linked-list).

Leetcode 370 Solution

This article provides solution to leetcode question 370 (range-addition).

Leetcode 371 Solution

This article provides solution to leetcode question 371 (sum-of-two-integers).

Leetcode 372 Solution

This article provides solution to leetcode question 372 (super-pow).

Leetcode 373 Solution

This article provides solution to leetcode question 373 (find-k-pairs-with-smallest-sums).

Leetcode 374 Solution

This article provides solution to leetcode question 374 (guess-number-higher-or-lower).

Leetcode 375 Solution

This article provides solution to leetcode question 375 (guess-number-higher-or-lower-ii).

Leetcode 376 Solution

This article provides solution to leetcode question 376 (wiggle-subsequence).

Leetcode 377 Solution

This article provides solution to leetcode question 377 (combination-sum-iv).

Leetcode 378 Solution

This article provides solution to leetcode question 378 (kth-smallest-element-in-a-sorted-matrix).

Leetcode 379 Solution

This article provides solution to leetcode question 379 (design-phone-directory).

Leetcode 380 Solution

This article provides solution to leetcode question 380 (insert-delete-getrandom-o1).

Leetcode 381 Solution

This article provides solution to leetcode question 381 (insert-delete-getrandom-o1-duplicates-allowed).

Leetcode 382 Solution

This article provides solution to leetcode question 382 (linked-list-random-node).

Leetcode 383 Solution

This article provides solution to leetcode question 383 (ransom-note).

Leetcode 384 Solution

This article provides solution to leetcode question 384 (shuffle-an-array).

Leetcode 385 Solution

This article provides solution to leetcode question 385 (mini-parser).

Leetcode 386 Solution

This article provides solution to leetcode question 386 (lexicographical-numbers).

Leetcode 387 Solution

This article provides solution to leetcode question 387 (first-unique-character-in-a-string).

Leetcode 388 Solution

This article provides solution to leetcode question 388 (longest-absolute-file-path).

Leetcode 389 Solution

This article provides solution to leetcode question 389 (find-the-difference).

Leetcode 390 Solution

This article provides solution to leetcode question 390 (elimination-game).

Leetcode 391 Solution

This article provides solution to leetcode question 391 (perfect-rectangle).

Leetcode 392 Solution

This article provides solution to leetcode question 392 (is-subsequence).

Leetcode 393 Solution

This article provides solution to leetcode question 393 (utf-8-validation).

Leetcode 394 Solution

This article provides solution to leetcode question 394 (decode-string).

Leetcode 395 Solution

This article provides solution to leetcode question 395 (longest-substring-with-at-least-k-repeating-characters).

Leetcode 396 Solution

This article provides solution to leetcode question 396 (rotate-function).

Leetcode 397 Solution

This article provides solution to leetcode question 397 (integer-replacement).

Leetcode 398 Solution

This article provides solution to leetcode question 398 (random-pick-index).

Leetcode 399 Solution

This article provides solution to leetcode question 399 (evaluate-division).

Leetcode 400 Solution

This article provides solution to leetcode question 400 (nth-digit).

Leetcode 401 Solution

This article provides solution to leetcode question 401 (binary-watch).

Leetcode 402 Solution

This article provides solution to leetcode question 402 (remove-k-digits).

Leetcode 403 Solution

This article provides solution to leetcode question 403 (frog-jump).

Leetcode 404 Solution

This article provides solution to leetcode question 404 (sum-of-left-leaves).

Leetcode 405 Solution

This article provides solution to leetcode question 405 (convert-a-number-to-hexadecimal).

Leetcode 406 Solution

This article provides solution to leetcode question 406 (queue-reconstruction-by-height).

Leetcode 407 Solution

This article provides solution to leetcode question 407 (trapping-rain-water-ii).

Leetcode 408 Solution

This article provides solution to leetcode question 408 (valid-word-abbreviation).

Leetcode 409 Solution

This article provides solution to leetcode question 409 (longest-palindrome).

Leetcode 410 Solution

This article provides solution to leetcode question 410 (split-array-largest-sum).

Leetcode 411 Solution

This article provides solution to leetcode question 411 (minimum-unique-word-abbreviation).

Leetcode 412 Solution

This article provides solution to leetcode question 412 (fizz-buzz).

Leetcode 413 Solution

This article provides solution to leetcode question 413 (arithmetic-slices).

Leetcode 414 Solution

This article provides solution to leetcode question 414 (third-maximum-number).

Leetcode 415 Solution

This article provides solution to leetcode question 415 (add-strings).

Leetcode 416 Solution

This article provides solution to leetcode question 416 (partition-equal-subset-sum).

Leetcode 417 Solution

This article provides solution to leetcode question 417 (pacific-atlantic-water-flow).

Leetcode 418 Solution

This article provides solution to leetcode question 418 (sentence-screen-fitting).

Leetcode 419 Solution

This article provides solution to leetcode question 419 (battleships-in-a-board).

Leetcode 421 Solution

This article provides solution to leetcode question 421 (maximum-xor-of-two-numbers-in-an-array).

Leetcode 422 Solution

This article provides solution to leetcode question 422 (valid-word-square).

Leetcode 423 Solution

This article provides solution to leetcode question 423 (reconstruct-original-digits-from-english).

Leetcode 424 Solution

This article provides solution to leetcode question 424 (longest-repeating-character-replacement).

Leetcode 425 Solution

This article provides solution to leetcode question 425 (word-squares).

Leetcode 432 Solution

This article provides solution to leetcode question 432 (all-oone-data-structure).

Leetcode 433 Solution

This article provides solution to leetcode question 433 (minimum-genetic-mutation).

Leetcode 434 Solution

This article provides solution to leetcode question 434 (number-of-segments-in-a-string).

Leetcode 435 Solution

This article provides solution to leetcode question 435 (non-overlapping-intervals).

Leetcode 436 Solution

This article provides solution to leetcode question 436 (find-right-interval).

Leetcode 437 Solution

This article provides solution to leetcode question 437 (path-sum-iii).

Leetcode 438 Solution

This article provides solution to leetcode question 438 (find-all-anagrams-in-a-string).

Leetcode 439 Solution

This article provides solution to leetcode question 439 (ternary-expression-parser).

Leetcode 440 Solution

This article provides solution to leetcode question 440 (k-th-smallest-in-lexicographical-order).

Leetcode 441 Solution

This article provides solution to leetcode question 441 (arranging-coins).

Leetcode 442 Solution

This article provides solution to leetcode question 442 (find-all-duplicates-in-an-array).

Leetcode 443 Solution

This article provides solution to leetcode question 443 (string-compression).

Leetcode 444 Solution

This article provides solution to leetcode question 444 (sequence-reconstruction).

Leetcode 445 Solution

This article provides solution to leetcode question 445 (add-two-numbers-ii).

Leetcode 446 Solution

This article provides solution to leetcode question 446 (arithmetic-slices-ii-subsequence).

Leetcode 447 Solution

This article provides solution to leetcode question 447 (number-of-boomerangs).

Leetcode 448 Solution

This article provides solution to leetcode question 448 (find-all-numbers-disappeared-in-an-array).

Leetcode 449 Solution

This article provides solution to leetcode question 449 (serialize-and-deserialize-bst).

Leetcode 450 Solution

This article provides solution to leetcode question 450 (delete-node-in-a-bst).

Leetcode 451 Solution

This article provides solution to leetcode question 451 (sort-characters-by-frequency).

Leetcode 452 Solution

This article provides solution to leetcode question 452 (minimum-number-of-arrows-to-burst-balloons).

Leetcode 453 Solution

This article provides solution to leetcode question 453 (minimum-moves-to-equal-array-elements).

Leetcode 454 Solution

This article provides solution to leetcode question 454 (4sum-ii).

Leetcode 455 Solution

This article provides solution to leetcode question 455 (assign-cookies).

Leetcode 456 Solution

This article provides solution to leetcode question 456 (132-pattern).

Leetcode 457 Solution

This article provides solution to leetcode question 457 (circular-array-loop).

Leetcode 459 Solution

This article provides solution to leetcode question 459 (repeated-substring-pattern).

Leetcode 460 Solution

This article provides solution to leetcode question 460 (lfu-cache).

Leetcode 461 Solution

This article provides solution to leetcode question 461 (hamming-distance).

Leetcode 462 Solution

This article provides solution to leetcode question 462 (minimum-moves-to-equal-array-elements-ii).

Leetcode 463 Solution

This article provides solution to leetcode question 463 (island-perimeter).

Leetcode 464 Solution

This article provides solution to leetcode question 464 (can-i-win).

Leetcode 465 Solution

This article provides solution to leetcode question 465 (optimal-account-balancing).

Leetcode 466 Solution

This article provides solution to leetcode question 466 (count-the-repetitions).

Leetcode 467 Solution

This article provides solution to leetcode question 467 (unique-substrings-in-wraparound-string).

Leetcode 468 Solution

This article provides solution to leetcode question 468 (validate-ip-address).

Leetcode 471 Solution

This article provides solution to leetcode question 471 (encode-string-with-shortest-length).

Leetcode 472 Solution

This article provides solution to leetcode question 472 (concatenated-words).

Leetcode 473 Solution

This article provides solution to leetcode question 473 (matchsticks-to-square).

Leetcode 474 Solution

This article provides solution to leetcode question 474 (ones-and-zeroes).

Leetcode 475 Solution

This article provides solution to leetcode question 475 (heaters).

Leetcode 476 Solution

This article provides solution to leetcode question 476 (number-complement).

Leetcode 477 Solution

This article provides solution to leetcode question 477 (total-hamming-distance).

Leetcode 480 Solution

This article provides solution to leetcode question 480 (sliding-window-median).

Leetcode 481 Solution

This article provides solution to leetcode question 481 (magical-string).

Leetcode 482 Solution

This article provides solution to leetcode question 482 (license-key-formatting).

Leetcode 483 Solution

This article provides solution to leetcode question 483 (smallest-good-base).

Leetcode 484 Solution

This article provides solution to leetcode question 484 (find-permutation).

Leetcode 485 Solution

This article provides solution to leetcode question 485 (max-consecutive-ones).

Leetcode 486 Solution

This article provides solution to leetcode question 486 (predict-the-winner).

Leetcode 487 Solution

This article provides solution to leetcode question 487 (max-consecutive-ones-ii).

Leetcode 488 Solution

This article provides solution to leetcode question 488 (zuma-game).

Leetcode 490 Solution

This article provides solution to leetcode question 490 (the-maze).

Leetcode 491 Solution

This article provides solution to leetcode question 491 (increasing-subsequences).

Leetcode 492 Solution

This article provides solution to leetcode question 492 (construct-the-rectangle).

Leetcode 493 Solution

This article provides solution to leetcode question 493 (reverse-pairs).

Leetcode 494 Solution

This article provides solution to leetcode question 494 (target-sum).

Leetcode 495 Solution

This article provides solution to leetcode question 495 (teemo-attacking).

Leetcode 496 Solution

This article provides solution to leetcode question 496 (next-greater-element-i).

Leetcode 498 Solution

This article provides solution to leetcode question 498 (diagonal-traverse).

Leetcode 499 Solution

This article provides solution to leetcode question 499 (the-maze-iii).

Leetcode 500 Solution

This article provides solution to leetcode question 500 (keyboard-row).

Leetcode 501 Solution

This article provides solution to leetcode question 501 (find-mode-in-binary-search-tree).

Leetcode 502 Solution

This article provides solution to leetcode question 502 (ipo).

Leetcode 503 Solution

This article provides solution to leetcode question 503 (next-greater-element-ii).

Leetcode 504 Solution

This article provides solution to leetcode question 504 (base-7).

Leetcode 505 Solution

This article provides solution to leetcode question 505 (the-maze-ii).

Leetcode 506 Solution

This article provides solution to leetcode question 506 (relative-ranks).

Leetcode 507 Solution

This article provides solution to leetcode question 507 (perfect-number).

Leetcode 508 Solution

This article provides solution to leetcode question 508 (most-frequent-subtree-sum).

Leetcode 509 Solution

This article provides solution to leetcode question 509 (inorder-successor-in-bst-ii).

Leetcode 513 Solution

This article provides solution to leetcode question 513 (find-bottom-left-tree-value).

Leetcode 515 Solution

This article provides solution to leetcode question 515 (find-largest-value-in-each-tree-row).

Leetcode 516 Solution

This article provides solution to leetcode question 516 (longest-palindromic-subsequence).

Leetcode 517 Solution

This article provides solution to leetcode question 517 (super-washing-machines).

Leetcode 518 Solution

This article provides solution to leetcode question 518 (coin-change-2).

Leetcode 520 Solution

This article provides solution to leetcode question 520 (detect-capital).

Leetcode 521 Solution

This article provides solution to leetcode question 521 (longest-uncommon-subsequence-i).

Leetcode 522 Solution

This article provides solution to leetcode question 522 (longest-uncommon-subsequence-ii).

Leetcode 523 Solution

This article provides solution to leetcode question 523 (continuous-subarray-sum).

Leetcode 524 Solution

This article provides solution to leetcode question 524 (longest-word-in-dictionary-through-deleting).

Leetcode 525 Solution

This article provides solution to leetcode question 525 (contiguous-array).

Leetcode 526 Solution

This article provides solution to leetcode question 526 (beautiful-arrangement).

Leetcode 527 Solution

This article provides solution to leetcode question 527 (word-abbreviation).

Leetcode 528 Solution

This article provides solution to leetcode question 528 (swapping-nodes-in-a-linked-list).

Leetcode 529 Solution

This article provides solution to leetcode question 529 (minesweeper).

Leetcode 530 Solution

This article provides solution to leetcode question 530 (minimum-absolute-difference-in-bst).

Leetcode 531 Solution

This article provides solution to leetcode question 531 (lonely-pixel-i).

Leetcode 532 Solution

This article provides solution to leetcode question 532 (k-diff-pairs-in-an-array).

Leetcode 535 Solution

This article provides solution to leetcode question 535 (encode-and-decode-tinyurl).

Leetcode 536 Solution

This article provides solution to leetcode question 536 (construct-binary-tree-from-string).

Leetcode 537 Solution

This article provides solution to leetcode question 537 (complex-number-multiplication).

Leetcode 538 Solution

This article provides solution to leetcode question 538 (convert-bst-to-greater-tree).

Leetcode 539 Solution

This article provides solution to leetcode question 539 (minimum-time-difference).

Leetcode 540 Solution

This article provides solution to leetcode question 540 (single-element-in-a-sorted-array).

Leetcode 541 Solution

This article provides solution to leetcode question 541 (reverse-string-ii).

Leetcode 542 Solution

This article provides solution to leetcode question 542 (01-matrix).

Leetcode 543 Solution

This article provides solution to leetcode question 543 (diameter-of-binary-tree).

Leetcode 546 Solution

This article provides solution to leetcode question 546 (remove-boxes).

Leetcode 547 Solution

This article provides solution to leetcode question 547 (number-of-provinces).

Leetcode 549 Solution

This article provides solution to leetcode question 549 (binary-tree-longest-consecutive-sequence-ii).

Leetcode 551 Solution

This article provides solution to leetcode question 551 (student-attendance-record-i).

Leetcode 552 Solution

This article provides solution to leetcode question 552 (student-attendance-record-ii).

Leetcode 553 Solution

This article provides solution to leetcode question 553 (optimal-division).

Leetcode 554 Solution

This article provides solution to leetcode question 554 (brick-wall).

Leetcode 556 Solution

This article provides solution to leetcode question 556 (next-greater-element-iii).

Leetcode 557 Solution

This article provides solution to leetcode question 557 (reverse-words-in-a-string-iii).

Leetcode 560 Solution

This article provides solution to leetcode question 560 (subarray-sum-equals-k).

Leetcode 561 Solution

This article provides solution to leetcode question 561 (array-partition-i).

Leetcode 562 Solution

This article provides solution to leetcode question 562 (longest-line-of-consecutive-one-in-matrix).

Leetcode 563 Solution

This article provides solution to leetcode question 563 (binary-tree-tilt).

Leetcode 565 Solution

This article provides solution to leetcode question 565 (array-nesting).

Leetcode 566 Solution

This article provides solution to leetcode question 566 (reshape-the-matrix).

Leetcode 567 Solution

This article provides solution to leetcode question 567 (permutation-in-string).

Leetcode 572 Solution

This article provides solution to leetcode question 572 (subtree-of-another-tree).

Leetcode 575 Solution

This article provides solution to leetcode question 575 (distribute-candies).

Leetcode 576 Solution

This article provides solution to leetcode question 576 (out-of-boundary-paths).

Leetcode 581 Solution

This article provides solution to leetcode question 581 (shortest-unsorted-continuous-subarray).

Leetcode 583 Solution

This article provides solution to leetcode question 583 (delete-operation-for-two-strings).

Leetcode 593 Solution

This article provides solution to leetcode question 593 (valid-square).

Leetcode 594 Solution

This article provides solution to leetcode question 594 (longest-harmonious-subsequence).

Leetcode 598 Solution

This article provides solution to leetcode question 598 (range-addition-ii).

Leetcode 599 Solution

This article provides solution to leetcode question 599 (minimum-index-sum-of-two-lists).

Leetcode 605 Solution

This article provides solution to leetcode question 605 (can-place-flowers).

Leetcode 606 Solution

This article provides solution to leetcode question 606 (construct-string-from-binary-tree).

Leetcode 609 Solution

This article provides solution to leetcode question 609 (find-duplicate-file-in-system).

Leetcode 611 Solution

This article provides solution to leetcode question 611 (valid-triangle-number).

Leetcode 617 Solution

This article provides solution to leetcode question 617 (merge-two-binary-trees).

Leetcode 621 Solution

This article provides solution to leetcode question 621 (task-scheduler).

Leetcode 623 Solution

This article provides solution to leetcode question 623 (add-one-row-to-tree).

Leetcode 628 Solution

This article provides solution to leetcode question 628 (maximum-product-of-three-numbers).

Leetcode 629 Solution

This article provides solution to leetcode question 629 (k-inverse-pairs-array).

Leetcode 632 Solution

This article provides solution to leetcode question 632 (smallest-range-covering-elements-from-k-lists).

Leetcode 633 Solution

This article provides solution to leetcode question 633 (sum-of-square-numbers).

Leetcode 635 Solution

This article provides solution to leetcode question 635 (design-log-storage-system).

Leetcode 636 Solution

This article provides solution to leetcode question 636 (exclusive-time-of-functions).

Leetcode 637 Solution

This article provides solution to leetcode question 637 (average-of-levels-in-binary-tree).

Leetcode 638 Solution

This article provides solution to leetcode question 638 (shopping-offers).

Leetcode 640 Solution

This article provides solution to leetcode question 640 (solve-the-equation).

Leetcode 642 Solution

This article provides solution to leetcode question 642 (design-search-autocomplete-system).

Leetcode 643 Solution

This article provides solution to leetcode question 643 (maximum-average-subarray-i).

Leetcode 645 Solution

This article provides solution to leetcode question 645 (set-mismatch).

Leetcode 646 Solution

This article provides solution to leetcode question 646 (maximum-length-of-pair-chain).

Leetcode 647 Solution

This article provides solution to leetcode question 647 (palindromic-substrings).

Leetcode 648 Solution

This article provides solution to leetcode question 648 (replace-words).

Leetcode 650 Solution

This article provides solution to leetcode question 650 (2-keys-keyboard).

Leetcode 652 Solution

This article provides solution to leetcode question 652 (find-duplicate-subtrees).

Leetcode 653 Solution

This article provides solution to leetcode question 653 (two-sum-iv-input-is-a-bst).

Leetcode 654 Solution

This article provides solution to leetcode question 654 (maximum-binary-tree).

Leetcode 655 Solution

This article provides solution to leetcode question 655 (print-binary-tree).

Leetcode 657 Solution

This article provides solution to leetcode question 657 (robot-return-to-origin).

Leetcode 658 Solution

This article provides solution to leetcode question 658 (find-k-closest-elements).

Leetcode 659 Solution

This article provides solution to leetcode question 659 (split-array-into-consecutive-subsequences).

Leetcode 661 Solution

This article provides solution to leetcode question 661 (image-smoother).

Leetcode 662 Solution

This article provides solution to leetcode question 662 (maximum-width-of-binary-tree).

Leetcode 664 Solution

This article provides solution to leetcode question 664 (strange-printer).

Leetcode 665 Solution

This article provides solution to leetcode question 665 (non-decreasing-array).

Leetcode 668 Solution

This article provides solution to leetcode question 668 (kth-smallest-number-in-multiplication-table).

Leetcode 669 Solution

This article provides solution to leetcode question 669 (trim-a-binary-search-tree).

Leetcode 670 Solution

This article provides solution to leetcode question 670 (maximum-swap).

Leetcode 671 Solution

This article provides solution to leetcode question 671 (second-minimum-node-in-a-binary-tree).

Leetcode 672 Solution

This article provides solution to leetcode question 672 (bulb-switcher-ii).

Leetcode 673 Solution

This article provides solution to leetcode question 673 (number-of-longest-increasing-subsequence).

Leetcode 674 Solution

This article provides solution to leetcode question 674 (longest-continuous-increasing-subsequence).

Leetcode 676 Solution

This article provides solution to leetcode question 676 (implement-magic-dictionary).

Leetcode 677 Solution

This article provides solution to leetcode question 677 (map-sum-pairs).

Leetcode 678 Solution

This article provides solution to leetcode question 678 (valid-parenthesis-string).

Leetcode 679 Solution

This article provides solution to leetcode question 679 (24-game).

Leetcode 680 Solution

This article provides solution to leetcode question 680 (valid-palindrome-ii).

Leetcode 684 Solution

This article provides solution to leetcode question 684 (redundant-connection).

Leetcode 686 Solution

This article provides solution to leetcode question 686 (repeated-string-match).

Leetcode 687 Solution

This article provides solution to leetcode question 687 (longest-univalue-path).

Leetcode 688 Solution

This article provides solution to leetcode question 688 (knight-probability-in-chessboard).

Leetcode 690 Solution

This article provides solution to leetcode question 690 (employee-importance).

Leetcode 691 Solution

This article provides solution to leetcode question 691 (stickers-to-spell-word).

Leetcode 692 Solution

This article provides solution to leetcode question 692 (top-k-frequent-words).

Leetcode 693 Solution

This article provides solution to leetcode question 693 (binary-number-with-alternating-bits).

Leetcode 694 Solution

This article provides solution to leetcode question 694 (number-of-distinct-islands).

Leetcode 695 Solution

This article provides solution to leetcode question 695 (max-area-of-island).

Leetcode 696 Solution

This article provides solution to leetcode question 696 (count-binary-substrings).

Leetcode 697 Solution

This article provides solution to leetcode question 697 (degree-of-an-array).

Leetcode 698 Solution

This article provides solution to leetcode question 698 (partition-to-k-equal-sum-subsets).

Leetcode 712 Solution

This article provides solution to leetcode question 712 (minimum-ascii-delete-sum-for-two-strings).

Leetcode 713 Solution

This article provides solution to leetcode question 713 (subarray-product-less-than-k).

Leetcode 714 Solution

This article provides solution to leetcode question 714 (best-time-to-buy-and-sell-stock-with-transaction-fee).

Leetcode 716 Solution

This article provides solution to leetcode question 716 (max-stack).

Leetcode 717 Solution

This article provides solution to leetcode question 717 (1-bit-and-2-bit-characters).

Leetcode 718 Solution

This article provides solution to leetcode question 718 (maximum-length-of-repeated-subarray).

Leetcode 719 Solution

This article provides solution to leetcode question 719 (find-k-th-smallest-pair-distance).

Leetcode 720 Solution

This article provides solution to leetcode question 720 (longest-word-in-dictionary).

Leetcode 721 Solution

This article provides solution to leetcode question 721 (accounts-merge).

Leetcode 724 Solution

This article provides solution to leetcode question 724 (find-pivot-index).

Leetcode 725 Solution

This article provides solution to leetcode question 725 (split-linked-list-in-parts).

Leetcode 728 Solution

This article provides solution to leetcode question 728 (self-dividing-numbers).

Leetcode 729 Solution

This article provides solution to leetcode question 729 (my-calendar-i).

Leetcode 731 Solution

This article provides solution to leetcode question 731 (my-calendar-ii).

Leetcode 733 Solution

This article provides solution to leetcode question 733 (flood-fill).

Leetcode 735 Solution

This article provides solution to leetcode question 735 (asteroid-collision).

Leetcode 736 Solution

This article provides solution to leetcode question 736 (parse-lisp-expression).

Leetcode 738 Solution

This article provides solution to leetcode question 738 (monotone-increasing-digits).

Leetcode 739 Solution

This article provides solution to leetcode question 739 (daily-temperatures).

Leetcode 740 Solution

This article provides solution to leetcode question 740 (delete-and-earn).

Leetcode 742 Solution

This article provides solution to leetcode question 742 (to-lower-case).

Leetcode 744 Solution

This article provides solution to leetcode question 744 (network-delay-time).

Leetcode 745 Solution

This article provides solution to leetcode question 745 (find-smallest-letter-greater-than-target).

Leetcode 746 Solution

This article provides solution to leetcode question 746 (prefix-and-suffix-search).

Leetcode 747 Solution

This article provides solution to leetcode question 747 (min-cost-climbing-stairs).

Leetcode 748 Solution

This article provides solution to leetcode question 748 (largest-number-at-least-twice-of-others).

Leetcode 753 Solution

This article provides solution to leetcode question 753 (open-the-lock).

Leetcode 755 Solution

This article provides solution to leetcode question 755 (reach-a-number).

Leetcode 759 Solution

This article provides solution to leetcode question 759 (set-intersection-size-at-least-two).

Leetcode 761 Solution

This article provides solution to leetcode question 761 (employee-free-time).

Leetcode 764 Solution

This article provides solution to leetcode question 764 (n-ary-tree-level-order-traversal).

Leetcode 765 Solution

This article provides solution to leetcode question 765 (serialize-and-deserialize-n-ary-tree).

Leetcode 766 Solution

This article provides solution to leetcode question 766 (flatten-a-multilevel-doubly-linked-list).

Leetcode 767 Solution

This article provides solution to leetcode question 767 (prime-number-of-set-bits-in-binary-representation).

Leetcode 768 Solution

This article provides solution to leetcode question 768 (partition-labels).

Leetcode 769 Solution

This article provides solution to leetcode question 769 (largest-plus-sign).

Leetcode 772 Solution

This article provides solution to leetcode question 772 (construct-quad-tree).

Leetcode 774 Solution

This article provides solution to leetcode question 774 (maximum-depth-of-n-ary-tree).

Leetcode 775 Solution

This article provides solution to leetcode question 775 (n-ary-tree-preorder-traversal).

Leetcode 776 Solution

This article provides solution to leetcode question 776 (n-ary-tree-postorder-traversal).

Leetcode 778 Solution

This article provides solution to leetcode question 778 (reorganize-string).

Leetcode 779 Solution

This article provides solution to leetcode question 779 (max-chunks-to-make-sorted-ii).

Leetcode 780 Solution

This article provides solution to leetcode question 780 (max-chunks-to-make-sorted).

Leetcode 782 Solution

This article provides solution to leetcode question 782 (jewels-and-stones).

Leetcode 783 Solution

This article provides solution to leetcode question 783 (search-in-a-binary-search-tree).

Leetcode 784 Solution

This article provides solution to leetcode question 784 (insert-into-a-binary-search-tree).

Leetcode 785 Solution

This article provides solution to leetcode question 785 (basic-calculator-iii).

Leetcode 787 Solution

This article provides solution to leetcode question 787 (sliding-puzzle).

Leetcode 789 Solution

This article provides solution to leetcode question 789 (kth-largest-element-in-a-stream).

Leetcode 790 Solution

This article provides solution to leetcode question 790 (global-and-local-inversions).

Leetcode 792 Solution

This article provides solution to leetcode question 792 (binary-search).

Leetcode 793 Solution

This article provides solution to leetcode question 793 (swap-adjacent-in-lr-string).

Leetcode 794 Solution

This article provides solution to leetcode question 794 (swim-in-rising-water).

Leetcode 795 Solution

This article provides solution to leetcode question 795 (k-th-symbol-in-grammar).

Leetcode 796 Solution

This article provides solution to leetcode question 796 (reaching-points).

Leetcode 797 Solution

This article provides solution to leetcode question 797 (rabbits-in-forest).

Leetcode 799 Solution

This article provides solution to leetcode question 799 (minimum-distance-between-bst-nodes).

Leetcode 800 Solution

This article provides solution to leetcode question 800 (letter-case-permutation).

Leetcode 801 Solution

This article provides solution to leetcode question 801 (is-graph-bipartite).

Leetcode 803 Solution

This article provides solution to leetcode question 803 (cheapest-flights-within-k-stops).

Leetcode 804 Solution

This article provides solution to leetcode question 804 (rotated-digits).

Leetcode 805 Solution

This article provides solution to leetcode question 805 (escape-the-ghosts).

Leetcode 807 Solution

This article provides solution to leetcode question 807 (custom-sort-string).

Leetcode 808 Solution

This article provides solution to leetcode question 808 (number-of-matching-subsequences).

Leetcode 810 Solution

This article provides solution to leetcode question 810 (valid-tic-tac-toe-state).

Leetcode 811 Solution

This article provides solution to leetcode question 811 (number-of-subarrays-with-bounded-maximum).

Leetcode 812 Solution

This article provides solution to leetcode question 812 (rotate-string).

Leetcode 813 Solution

This article provides solution to leetcode question 813 (all-paths-from-source-to-target).

Leetcode 815 Solution

This article provides solution to leetcode question 815 (champagne-tower).

Leetcode 816 Solution

This article provides solution to leetcode question 816 (design-hashset).

Leetcode 817 Solution

This article provides solution to leetcode question 817 (design-hashmap).

Leetcode 819 Solution

This article provides solution to leetcode question 819 (minimum-swaps-to-make-sequences-increasing).

Leetcode 820 Solution

This article provides solution to leetcode question 820 (find-eventual-safe-states).

Leetcode 822 Solution

This article provides solution to leetcode question 822 (unique-morse-code-words).

Leetcode 823 Solution

This article provides solution to leetcode question 823 (split-array-with-same-average).

Leetcode 824 Solution

This article provides solution to leetcode question 824 (number-of-lines-to-write-string).

Leetcode 825 Solution

This article provides solution to leetcode question 825 (max-increase-to-keep-city-skyline).

Leetcode 829 Solution

This article provides solution to leetcode question 829 (subdomain-visit-count).

Leetcode 831 Solution

This article provides solution to leetcode question 831 (largest-sum-of-averages).

Leetcode 832 Solution

This article provides solution to leetcode question 832 (binary-tree-pruning).

Leetcode 833 Solution

This article provides solution to leetcode question 833 (bus-routes).

Leetcode 835 Solution

This article provides solution to leetcode question 835 (linked-list-components).

Leetcode 836 Solution

This article provides solution to leetcode question 836 (race-car).

Leetcode 837 Solution

This article provides solution to leetcode question 837 (most-common-word).

Leetcode 838 Solution

This article provides solution to leetcode question 838 (design-linked-list).

Leetcode 841 Solution

This article provides solution to leetcode question 841 (shortest-distance-to-a-character).

Leetcode 843 Solution

This article provides solution to leetcode question 843 (binary-trees-with-factors).

Leetcode 852 Solution

This article provides solution to leetcode question 852 (friends-of-appropriate-ages).

Leetcode 853 Solution

This article provides solution to leetcode question 853 (most-profit-assigning-work).

Leetcode 857 Solution

This article provides solution to leetcode question 857 (positions-of-large-groups).

Leetcode 858 Solution

This article provides solution to leetcode question 858 (masking-personal-information).

Leetcode 859 Solution

This article provides solution to leetcode question 859 (design-circular-deque).

Leetcode 860 Solution

This article provides solution to leetcode question 860 (design-circular-queue).

Leetcode 861 Solution

This article provides solution to leetcode question 861 (flipping-an-image).

Leetcode 862 Solution

This article provides solution to leetcode question 862 (find-and-replace-in-string).

Leetcode 863 Solution

This article provides solution to leetcode question 863 (sum-of-distances-in-tree).

Leetcode 865 Solution

This article provides solution to leetcode question 865 (robot-room-cleaner).

Leetcode 866 Solution

This article provides solution to leetcode question 866 (rectangle-overlap).

Leetcode 867 Solution

This article provides solution to leetcode question 867 (new-21-game).

Leetcode 868 Solution

This article provides solution to leetcode question 868 (push-dominoes).

Leetcode 871 Solution

This article provides solution to leetcode question 871 (keys-and-rooms).

Leetcode 872 Solution

This article provides solution to leetcode question 872 (split-array-into-fibonacci-sequence).

Leetcode 874 Solution

This article provides solution to leetcode question 874 (backspace-string-compare).

Leetcode 875 Solution

This article provides solution to leetcode question 875 (longest-mountain-in-array).

Leetcode 876 Solution

This article provides solution to leetcode question 876 (hand-of-straights).

Leetcode 878 Solution

This article provides solution to leetcode question 878 (shifting-letters).

Leetcode 879 Solution

This article provides solution to leetcode question 879 (maximize-distance-to-closest-person).

Leetcode 882 Solution

This article provides solution to leetcode question 882 (peak-index-in-a-mountain-array).

Leetcode 883 Solution

This article provides solution to leetcode question 883 (car-fleet).

Leetcode 885 Solution

This article provides solution to leetcode question 885 (exam-room).

Leetcode 886 Solution

This article provides solution to leetcode question 886 (score-of-parentheses).

Leetcode 887 Solution

This article provides solution to leetcode question 887 (minimum-cost-to-hire-k-workers).

Leetcode 889 Solution

This article provides solution to leetcode question 889 (buddy-strings).

Leetcode 890 Solution

This article provides solution to leetcode question 890 (lemonade-change).

Leetcode 891 Solution

This article provides solution to leetcode question 891 (score-after-flipping-matrix).

Leetcode 892 Solution

This article provides solution to leetcode question 892 (shortest-subarray-with-sum-at-least-k).

Leetcode 893 Solution

This article provides solution to leetcode question 893 (all-nodes-distance-k-in-binary-tree).

Leetcode 896 Solution

This article provides solution to leetcode question 896 (smallest-subtree-with-all-the-deepest-nodes).

Leetcode 898 Solution

This article provides solution to leetcode question 898 (transpose-matrix).

Leetcode 899 Solution

This article provides solution to leetcode question 899 (binary-gap).

Leetcode 900 Solution

This article provides solution to leetcode question 900 (reordered-power-of-2).

Leetcode 901 Solution

This article provides solution to leetcode question 901 (advantage-shuffle).

Leetcode 902 Solution

This article provides solution to leetcode question 902 (minimum-number-of-refueling-stops).

Leetcode 903 Solution

This article provides solution to leetcode question 903 (implement-rand10-using-rand7).

Leetcode 904 Solution

This article provides solution to leetcode question 904 (leaf-similar-trees).

Leetcode 905 Solution

This article provides solution to leetcode question 905 (length-of-longest-fibonacci-subsequence).

Leetcode 906 Solution

This article provides solution to leetcode question 906 (walking-robot-simulation).

Leetcode 907 Solution

This article provides solution to leetcode question 907 (koko-eating-bananas).

Leetcode 908 Solution

This article provides solution to leetcode question 908 (middle-of-the-linked-list).

Leetcode 909 Solution

This article provides solution to leetcode question 909 (stone-game).

Leetcode 912 Solution

This article provides solution to leetcode question 912 (random-pick-with-weight).

Leetcode 913 Solution

This article provides solution to leetcode question 913 (random-flip-matrix).

Leetcode 915 Solution

This article provides solution to leetcode question 915 (generate-random-point-in-a-circle).

Leetcode 916 Solution

This article provides solution to leetcode question 916 (decoded-string-at-index).

Leetcode 917 Solution

This article provides solution to leetcode question 917 (boats-to-save-people).

Leetcode 919 Solution

This article provides solution to leetcode question 919 (projection-area-of-3d-shapes).

Leetcode 920 Solution

This article provides solution to leetcode question 920 (uncommon-words-from-two-sentences).

Leetcode 921 Solution

This article provides solution to leetcode question 921 (spiral-matrix-iii).

Leetcode 922 Solution

This article provides solution to leetcode question 922 (possible-bipartition).

Leetcode 924 Solution

This article provides solution to leetcode question 924 (fair-candy-swap).

Leetcode 925 Solution

This article provides solution to leetcode question 925 (construct-binary-tree-from-preorder-and-postorder-traversal).

Leetcode 926 Solution

This article provides solution to leetcode question 926 (find-and-replace-pattern).

Leetcode 927 Solution

This article provides solution to leetcode question 927 (sum-of-subsequence-widths).

Leetcode 928 Solution

This article provides solution to leetcode question 928 (surface-area-of-3d-shapes).

Leetcode 929 Solution

This article provides solution to leetcode question 929 (groups-of-special-equivalent-strings).

Leetcode 930 Solution

This article provides solution to leetcode question 930 (all-possible-full-binary-trees).

Leetcode 931 Solution

This article provides solution to leetcode question 931 (maximum-frequency-stack).

Leetcode 932 Solution

This article provides solution to leetcode question 932 (monotonic-array).

Leetcode 933 Solution

This article provides solution to leetcode question 933 (increasing-order-search-tree).

Leetcode 934 Solution

This article provides solution to leetcode question 934 (bitwise-ors-of-subarrays).

Leetcode 936 Solution

This article provides solution to leetcode question 936 (rle-iterator).

Leetcode 940 Solution

This article provides solution to leetcode question 940 (fruit-into-baskets).

Leetcode 941 Solution

This article provides solution to leetcode question 941 (sort-array-by-parity).

Leetcode 943 Solution

This article provides solution to leetcode question 943 (sum-of-subarray-minimums).

Leetcode 944 Solution

This article provides solution to leetcode question 944 (smallest-range-i).

Leetcode 946 Solution

This article provides solution to leetcode question 946 (smallest-range-ii).

Leetcode 947 Solution

This article provides solution to leetcode question 947 (online-election).

Leetcode 948 Solution

This article provides solution to leetcode question 948 (sort-an-array).

Leetcode 950 Solution

This article provides solution to leetcode question 950 (x-of-a-kind-in-a-deck-of-cards).

Leetcode 951 Solution

This article provides solution to leetcode question 951 (partition-array-into-disjoint-intervals).

Leetcode 952 Solution

This article provides solution to leetcode question 952 (word-subsets).

Leetcode 953 Solution

This article provides solution to leetcode question 953 (reverse-only-letters).

Leetcode 954 Solution

This article provides solution to leetcode question 954 (maximum-sum-circular-subarray).

Leetcode 955 Solution

This article provides solution to leetcode question 955 (complete-binary-tree-inserter).

Leetcode 957 Solution

This article provides solution to leetcode question 957 (minimum-add-to-make-parentheses-valid).

Leetcode 958 Solution

This article provides solution to leetcode question 958 (sort-array-by-parity-ii).

Leetcode 959 Solution

This article provides solution to leetcode question 959 (3sum-with-multiplicity).

Leetcode 960 Solution

This article provides solution to leetcode question 960 (minimize-malware-spread).

Leetcode 961 Solution

This article provides solution to leetcode question 961 (long-pressed-name).

Leetcode 962 Solution

This article provides solution to leetcode question 962 (flip-string-to-monotone-increasing).

Leetcode 964 Solution

This article provides solution to leetcode question 964 (minimize-malware-spread-ii).

Leetcode 965 Solution

This article provides solution to leetcode question 965 (unique-email-addresses).

Leetcode 966 Solution

This article provides solution to leetcode question 966 (binary-subarrays-with-sum).

Leetcode 967 Solution

This article provides solution to leetcode question 967 (minimum-falling-path-sum).

Leetcode 968 Solution

This article provides solution to leetcode question 968 (beautiful-array).

Leetcode 969 Solution

This article provides solution to leetcode question 969 (number-of-recent-calls).

Leetcode 971 Solution

This article provides solution to leetcode question 971 (shortest-bridge).

Leetcode 972 Solution

This article provides solution to leetcode question 972 (knight-dialer).

Leetcode 974 Solution

This article provides solution to leetcode question 974 (reorder-data-in-log-files).

Leetcode 975 Solution

This article provides solution to leetcode question 975 (range-sum-of-bst).

Leetcode 976 Solution

This article provides solution to leetcode question 976 (minimum-area-rectangle).

Leetcode 978 Solution

This article provides solution to leetcode question 978 (valid-mountain-array).

Leetcode 979 Solution

This article provides solution to leetcode question 979 (di-string-match).

Leetcode 981 Solution

This article provides solution to leetcode question 981 (delete-columns-to-make-sorted).

Leetcode 982 Solution

This article provides solution to leetcode question 982 (minimum-increment-to-make-array-unique).

Leetcode 983 Solution

This article provides solution to leetcode question 983 (validate-stack-sequences).

Leetcode 984 Solution

This article provides solution to leetcode question 984 (most-stones-removed-with-same-row-or-column).

Leetcode 985 Solution

This article provides solution to leetcode question 985 (bag-of-tokens).

Leetcode 986 Solution

This article provides solution to leetcode question 986 (largest-time-for-given-digits).

Leetcode 987 Solution

This article provides solution to leetcode question 987 (reveal-cards-in-increasing-order).

Leetcode 988 Solution

This article provides solution to leetcode question 988 (flip-equivalent-binary-trees).

Leetcode 990 Solution

This article provides solution to leetcode question 990 (verifying-an-alien-dictionary).

Leetcode 991 Solution

This article provides solution to leetcode question 991 (array-of-doubled-pairs).

Leetcode 992 Solution

This article provides solution to leetcode question 992 (delete-columns-to-make-sorted-ii).

Leetcode 994 Solution

This article provides solution to leetcode question 994 (prison-cells-after-n-days).

Leetcode 998 Solution

This article provides solution to leetcode question 998 (check-completeness-of-a-binary-tree).

Leetcode 999 Solution

This article provides solution to leetcode question 999 (regions-cut-by-slashes).

Leetcode 1001 Solution

This article provides solution to leetcode question 1001 (n-repeated-element-in-size-2n-array).

Leetcode 1002 Solution

This article provides solution to leetcode question 1002 (maximum-width-ramp).

Leetcode 1003 Solution

This article provides solution to leetcode question 1003 (minimum-area-rectangle-ii).

Leetcode 1004 Solution

This article provides solution to leetcode question 1004 (least-operators-to-express-number).

Leetcode 1005 Solution

This article provides solution to leetcode question 1005 (univalued-binary-tree).

Leetcode 1007 Solution

This article provides solution to leetcode question 1007 (numbers-with-same-consecutive-differences).

Leetcode 1009 Solution

This article provides solution to leetcode question 1009 (pancake-sorting).

Leetcode 1010 Solution

This article provides solution to leetcode question 1010 (powerful-integers).

Leetcode 1011 Solution

This article provides solution to leetcode question 1011 (flip-binary-tree-to-match-preorder-traversal).

Leetcode 1013 Solution

This article provides solution to leetcode question 1013 (fibonacci-number).

Leetcode 1014 Solution

This article provides solution to leetcode question 1014 (k-closest-points-to-origin).

Leetcode 1016 Solution

This article provides solution to leetcode question 1016 (subarray-sums-divisible-by-k).

Leetcode 1018 Solution

This article provides solution to leetcode question 1018 (largest-perimeter-triangle).

Leetcode 1019 Solution

This article provides solution to leetcode question 1019 (squares-of-a-sorted-array).

Leetcode 1020 Solution

This article provides solution to leetcode question 1020 (longest-turbulent-subarray).

Leetcode 1021 Solution

This article provides solution to leetcode question 1021 (distribute-coins-in-binary-tree).

Leetcode 1023 Solution

This article provides solution to leetcode question 1023 (time-based-key-value-store).

Leetcode 1025 Solution

This article provides solution to leetcode question 1025 (minimum-cost-for-tickets).

Leetcode 1026 Solution

This article provides solution to leetcode question 1026 (string-without-aaa-or-bbb).

Leetcode 1027 Solution

This article provides solution to leetcode question 1027 (sum-of-even-numbers-after-queries).

Leetcode 1028 Solution

This article provides solution to leetcode question 1028 (interval-list-intersections).

Leetcode 1029 Solution

This article provides solution to leetcode question 1029 (vertical-order-traversal-of-a-binary-tree).

Leetcode 1030 Solution

This article provides solution to leetcode question 1030 (smallest-string-starting-from-leaf).

Leetcode 1031 Solution

This article provides solution to leetcode question 1031 (add-to-array-form-of-integer).

Leetcode 1032 Solution

This article provides solution to leetcode question 1032 (satisfiability-of-equality-equations).

Leetcode 1033 Solution

This article provides solution to leetcode question 1033 (broken-calculator).

Leetcode 1034 Solution

This article provides solution to leetcode question 1034 (subarrays-with-k-different-integers).

Leetcode 1035 Solution

This article provides solution to leetcode question 1035 (cousins-in-binary-tree).

Leetcode 1036 Solution

This article provides solution to leetcode question 1036 (rotting-oranges).

Leetcode 1039 Solution

This article provides solution to leetcode question 1039 (find-the-town-judge).

Leetcode 1040 Solution

This article provides solution to leetcode question 1040 (maximum-binary-tree-ii).

Leetcode 1041 Solution

This article provides solution to leetcode question 1041 (available-captures-for-rook).

Leetcode 1044 Solution

This article provides solution to leetcode question 1044 (find-common-characters).

Leetcode 1045 Solution

This article provides solution to leetcode question 1045 (check-if-word-is-valid-after-substitutions).

Leetcode 1046 Solution

This article provides solution to leetcode question 1046 (max-consecutive-ones-iii).

Leetcode 1047 Solution

This article provides solution to leetcode question 1047 (maximize-sum-of-array-after-k-negations).

Leetcode 1048 Solution

This article provides solution to leetcode question 1048 (clumsy-factorial).

Leetcode 1049 Solution

This article provides solution to leetcode question 1049 (minimum-domino-rotations-for-equal-row).

Leetcode 1050 Solution

This article provides solution to leetcode question 1050 (construct-binary-search-tree-from-preorder-traversal).

Leetcode 1054 Solution

This article provides solution to leetcode question 1054 (complement-of-base-10-integer).

Leetcode 1055 Solution

This article provides solution to leetcode question 1055 (pairs-of-songs-with-total-durations-divisible-by-60).

Leetcode 1056 Solution

This article provides solution to leetcode question 1056 (capacity-to-ship-packages-within-d-days).

Leetcode 1057 Solution

This article provides solution to leetcode question 1057 (numbers-with-repeated-digits).

Leetcode 1059 Solution

This article provides solution to leetcode question 1059 (missing-element-in-sorted-array).

Leetcode 1062 Solution

This article provides solution to leetcode question 1062 (partition-array-into-three-parts-with-equal-sum).

Leetcode 1063 Solution

This article provides solution to leetcode question 1063 (best-sightseeing-pair).

Leetcode 1064 Solution

This article provides solution to leetcode question 1064 (smallest-integer-divisible-by-k).

Leetcode 1065 Solution

This article provides solution to leetcode question 1065 (binary-string-with-substrings-representing-1-to-n).

Leetcode 1070 Solution

This article provides solution to leetcode question 1070 (convert-to-base-2).

Leetcode 1071 Solution

This article provides solution to leetcode question 1071 (binary-prefix-divisible-by-5).

Leetcode 1072 Solution

This article provides solution to leetcode question 1072 (next-greater-node-in-linked-list).

Leetcode 1073 Solution

This article provides solution to leetcode question 1073 (number-of-enclaves).

Leetcode 1078 Solution

This article provides solution to leetcode question 1078 (remove-outermost-parentheses).

Leetcode 1079 Solution

This article provides solution to leetcode question 1079 (sum-of-root-to-leaf-binary-numbers).

Leetcode 1080 Solution

This article provides solution to leetcode question 1080 (camelcase-matching).

Leetcode 1081 Solution

This article provides solution to leetcode question 1081 (video-stitching).

Leetcode 1086 Solution

This article provides solution to leetcode question 1086 (divisor-game).

Leetcode 1087 Solution

This article provides solution to leetcode question 1087 (longest-arithmetic-subsequence).

Leetcode 1091 Solution

This article provides solution to leetcode question 1091 (maximum-average-subtree).

Leetcode 1092 Solution

This article provides solution to leetcode question 1092 (maximum-difference-between-node-and-ancestor).

Leetcode 1093 Solution

This article provides solution to leetcode question 1093 (recover-a-tree-from-preorder-traversal).

Leetcode 1094 Solution

This article provides solution to leetcode question 1094 (matrix-cells-in-distance-order).

Leetcode 1095 Solution

This article provides solution to leetcode question 1095 (two-city-scheduling).

Leetcode 1096 Solution

This article provides solution to leetcode question 1096 (maximum-sum-of-two-non-overlapping-subarrays).

Leetcode 1099 Solution

This article provides solution to leetcode question 1099 (path-with-maximum-minimum-value).

Leetcode 1100 Solution

This article provides solution to leetcode question 1100 (connecting-cities-with-minimum-cost).

Leetcode 1101 Solution

This article provides solution to leetcode question 1101 (parallel-courses).

Leetcode 1105 Solution

This article provides solution to leetcode question 1105 (uncrossed-lines).

Leetcode 1107 Solution

This article provides solution to leetcode question 1107 (minimum-swaps-to-group-all-1s-together).

Leetcode 1112 Solution

This article provides solution to leetcode question 1112 (find-words-that-can-be-formed-by-characters).

Leetcode 1114 Solution

This article provides solution to leetcode question 1114 (binary-search-tree-to-greater-sum-tree).

Leetcode 1116 Solution

This article provides solution to leetcode question 1116 (maximum-level-sum-of-a-binary-tree).

Leetcode 1117 Solution

This article provides solution to leetcode question 1117 (as-far-from-land-as-possible).

Leetcode 1121 Solution

This article provides solution to leetcode question 1121 (partition-array-for-maximum-sum).

Leetcode 1122 Solution

This article provides solution to leetcode question 1122 (longest-duplicate-substring).

Leetcode 1125 Solution

This article provides solution to leetcode question 1125 (design-file-system).

Leetcode 1127 Solution

This article provides solution to leetcode question 1127 (last-stone-weight).

Leetcode 1128 Solution

This article provides solution to leetcode question 1128 (remove-all-adjacent-duplicates-in-string).

Leetcode 1129 Solution

This article provides solution to leetcode question 1129 (longest-string-chain).

Leetcode 1130 Solution

This article provides solution to leetcode question 1130 (last-stone-weight-ii).

Leetcode 1138 Solution

This article provides solution to leetcode question 1138 (grumpy-bookstore-owner).

Leetcode 1142 Solution

This article provides solution to leetcode question 1142 (minimum-knight-moves).

Leetcode 1146 Solution

This article provides solution to leetcode question 1146 (greatest-common-divisor-of-strings).

Leetcode 1147 Solution

This article provides solution to leetcode question 1147 (flip-columns-for-maximum-number-of-equal-rows).

Leetcode 1148 Solution

This article provides solution to leetcode question 1148 (adding-two-negabinary-numbers).

Leetcode 1156 Solution

This article provides solution to leetcode question 1156 (occurrences-after-bigram).

Leetcode 1157 Solution

This article provides solution to leetcode question 1157 (insufficient-nodes-in-root-to-leaf-paths).

Leetcode 1159 Solution

This article provides solution to leetcode question 1159 (smallest-subsequence-of-distinct-characters).

Leetcode 1168 Solution

This article provides solution to leetcode question 1168 (duplicate-zeros).

Leetcode 1170 Solution

This article provides solution to leetcode question 1170 (shortest-common-supersequence).

Leetcode 1171 Solution

This article provides solution to leetcode question 1171 (shortest-path-in-binary-matrix).

Leetcode 1176 Solution

This article provides solution to leetcode question 1176 (design-a-leaderboard).

Leetcode 1184 Solution

This article provides solution to leetcode question 1184 (car-pooling).

Leetcode 1185 Solution

This article provides solution to leetcode question 1185 (find-in-mountain-array).

Leetcode 1188 Solution

This article provides solution to leetcode question 1188 (brace-expansion-ii).

Leetcode 1194 Solution

This article provides solution to leetcode question 1194 (path-in-zigzag-labelled-binary-tree).

Leetcode 1197 Solution

This article provides solution to leetcode question 1197 (parsing-a-boolean-expression).

Leetcode 1200 Solution

This article provides solution to leetcode question 1200 (remove-interval).

Leetcode 1207 Solution

This article provides solution to leetcode question 1207 (delete-nodes-and-return-forest).

Leetcode 1210 Solution

This article provides solution to leetcode question 1210 (mean-of-array-after-removing-some-elements).

Leetcode 1211 Solution

This article provides solution to leetcode question 1211 (iterator-for-combination).

Leetcode 1212 Solution

This article provides solution to leetcode question 1212 (sequential-digits).

Leetcode 1217 Solution

This article provides solution to leetcode question 1217 (relative-sort-array).

Leetcode 1218 Solution

This article provides solution to leetcode question 1218 (lowest-common-ancestor-of-deepest-leaves).

Leetcode 1221 Solution

This article provides solution to leetcode question 1221 (element-appearing-more-than-25-in-sorted-array).

Leetcode 1222 Solution

This article provides solution to leetcode question 1222 (remove-covered-intervals).

Leetcode 1227 Solution

This article provides solution to leetcode question 1227 (number-of-equivalent-domino-pairs).

Leetcode 1228 Solution

This article provides solution to leetcode question 1228 (minimum-cost-tree-from-leaf-values).

Leetcode 1229 Solution

This article provides solution to leetcode question 1229 (shortest-path-with-alternating-colors).

Leetcode 1231 Solution

This article provides solution to leetcode question 1231 (replace-elements-with-greatest-element-on-right-side).

Leetcode 1232 Solution

This article provides solution to leetcode question 1232 (sum-of-mutated-array-closest-to-target).

Leetcode 1236 Solution

This article provides solution to leetcode question 1236 (n-th-tribonacci-number).

Leetcode 1238 Solution

This article provides solution to leetcode question 1238 (alphabet-board-path).

Leetcode 1239 Solution

This article provides solution to leetcode question 1239 (largest-1-bordered-square).

Leetcode 1240 Solution

This article provides solution to leetcode question 1240 (stone-game-ii).

Leetcode 1241 Solution

This article provides solution to leetcode question 1241 (decompress-run-length-encoded-list).

Leetcode 1243 Solution

This article provides solution to leetcode question 1243 (sum-of-nodes-with-even-valued-grandparent).

Leetcode 1249 Solution

This article provides solution to leetcode question 1249 (snapshot-array).

Leetcode 1250 Solution

This article provides solution to leetcode question 1250 (longest-common-subsequence).

Leetcode 1254 Solution

This article provides solution to leetcode question 1254 (deepest-leaves-sum).

Leetcode 1256 Solution

This article provides solution to leetcode question 1256 (rank-transform-of-an-array).

Leetcode 1257 Solution

This article provides solution to leetcode question 1257 (rank-transform-of-a-matrix).

Leetcode 1260 Solution

This article provides solution to leetcode question 1260 (day-of-the-year).

Leetcode 1275 Solution

This article provides solution to leetcode question 1275 (validate-binary-tree-nodes).

Leetcode 1276 Solution

This article provides solution to leetcode question 1276 (closest-divisors).

Leetcode 1281 Solution

This article provides solution to leetcode question 1281 (can-make-palindrome-from-substring).

Leetcode 1284 Solution

This article provides solution to leetcode question 1284 (four-divisors).

Leetcode 1285 Solution

This article provides solution to leetcode question 1285 (balance-a-binary-search-tree).

Leetcode 1288 Solution

This article provides solution to leetcode question 1288 (maximum-subarray-sum-with-one-deletion).

Leetcode 1293 Solution

This article provides solution to leetcode question 1293 (three-consecutive-odds).

Leetcode 1297 Solution

This article provides solution to leetcode question 1297 (maximum-number-of-balloons).

Leetcode 1298 Solution

This article provides solution to leetcode question 1298 (reverse-substrings-between-each-pair-of-parentheses).

Leetcode 1299 Solution

This article provides solution to leetcode question 1299 (k-concatenation-maximum-sum).

Leetcode 1300 Solution

This article provides solution to leetcode question 1300 (critical-connections-in-a-network).

Leetcode 1302 Solution

This article provides solution to leetcode question 1302 (delete-characters-to-make-fancy-string).

Leetcode 1304 Solution

This article provides solution to leetcode question 1304 (longest-happy-string).

Leetcode 1306 Solution

This article provides solution to leetcode question 1306 (minimum-absolute-difference).

Leetcode 1308 Solution

This article provides solution to leetcode question 1308 (smallest-string-with-swaps).

Leetcode 1319 Solution

This article provides solution to leetcode question 1319 (unique-number-of-occurrences).

Leetcode 1320 Solution

This article provides solution to leetcode question 1320 (remove-all-adjacent-duplicates-in-string-ii).

Leetcode 1325 Solution

This article provides solution to leetcode question 1325 (path-with-maximum-probability).

Leetcode 1329 Solution

This article provides solution to leetcode question 1329 (minimum-cost-to-move-chips-to-the-same-position).

Leetcode 1330 Solution

This article provides solution to leetcode question 1330 (longest-arithmetic-subsequence-of-given-difference).

Leetcode 1331 Solution

This article provides solution to leetcode question 1331 (path-with-maximum-gold).

Leetcode 1337 Solution

This article provides solution to leetcode question 1337 (design-skiplist).

Leetcode 1341 Solution

This article provides solution to leetcode question 1341 (split-a-string-in-balanced-strings).

Leetcode 1349 Solution

This article provides solution to leetcode question 1349 (check-if-it-is-a-straight-line).

Leetcode 1351 Solution

This article provides solution to leetcode question 1351 (replace-the-substring-for-balanced-string).

Leetcode 1360 Solution

This article provides solution to leetcode question 1360 (maximum-length-of-a-concatenated-string-with-unique-characters).

Leetcode 1369 Solution

This article provides solution to leetcode question 1369 (minimum-swaps-to-make-strings-equal).

Leetcode 1370 Solution

This article provides solution to leetcode question 1370 (count-number-of-nice-subarrays).

Leetcode 1371 Solution

This article provides solution to leetcode question 1371 (minimum-remove-to-make-valid-parentheses).

Leetcode 1374 Solution

This article provides solution to leetcode question 1374 (leftmost-column-with-at-least-a-one).

Leetcode 1379 Solution

This article provides solution to leetcode question 1379 (reconstruct-a-2-row-binary-matrix).

Leetcode 1380 Solution

This article provides solution to leetcode question 1380 (number-of-closed-islands).

Leetcode 1386 Solution

This article provides solution to leetcode question 1386 (shift-2d-grid).

Leetcode 1387 Solution

This article provides solution to leetcode question 1387 (find-elements-in-a-contaminated-binary-tree).

Leetcode 1388 Solution

This article provides solution to leetcode question 1388 (greatest-sum-divisible-by-three).

Leetcode 1395 Solution

This article provides solution to leetcode question 1395 (minimum-time-visiting-all-points).

Leetcode 1396 Solution

This article provides solution to leetcode question 1396 (count-servers-that-communicate).

Leetcode 1397 Solution

This article provides solution to leetcode question 1397 (search-suggestions-system).

Leetcode 1401 Solution

This article provides solution to leetcode question 1401 (number-of-burgers-with-no-waste-of-ingredients).

Leetcode 1402 Solution

This article provides solution to leetcode question 1402 (count-square-submatrices-with-all-ones).

Leetcode 1406 Solution

This article provides solution to leetcode question 1406 (subtract-the-product-and-sum-of-digits-of-an-integer).

Leetcode 1407 Solution

This article provides solution to leetcode question 1407 (group-the-people-given-the-group-size-they-belong-to).

Leetcode 1408 Solution

This article provides solution to leetcode question 1408 (find-the-smallest-divisor-given-a-threshold).

Leetcode 1409 Solution

This article provides solution to leetcode question 1409 (minimum-number-of-flips-to-convert-binary-matrix-to-zero-matrix).

Leetcode 1411 Solution

This article provides solution to leetcode question 1411 (convert-binary-number-in-a-linked-list-to-integer).

Leetcode 1414 Solution

This article provides solution to leetcode question 1414 (shortest-path-in-a-grid-with-obstacles-elimination).

Leetcode 1421 Solution

This article provides solution to leetcode question 1421 (find-numbers-with-even-number-of-digits).

Leetcode 1422 Solution

This article provides solution to leetcode question 1422 (divide-array-in-sets-of-k-consecutive-numbers).

Leetcode 1423 Solution

This article provides solution to leetcode question 1423 (maximum-number-of-occurrences-of-a-substring).

Leetcode 1426 Solution

This article provides solution to leetcode question 1426 (find-n-unique-integers-sum-up-to-zero).

Leetcode 1428 Solution

This article provides solution to leetcode question 1428 (jump-game-iii).

Leetcode 1440 Solution

This article provides solution to leetcode question 1440 (convert-integer-to-the-sum-of-two-no-zero-integers).

Leetcode 1445 Solution

This article provides solution to leetcode question 1445 (number-of-sub-arrays-of-size-k-and-average-greater-than-or-equal-to-threshold).

Leetcode 1448 Solution

This article provides solution to leetcode question 1448 (maximum-69-number).

Leetcode 1449 Solution

This article provides solution to leetcode question 1449 (print-words-vertically).

Leetcode 1450 Solution

This article provides solution to leetcode question 1450 (delete-leaves-with-a-given-value).

Leetcode 1451 Solution

This article provides solution to leetcode question 1451 (minimum-number-of-taps-to-open-to-water-a-garden).

Leetcode 1457 Solution

This article provides solution to leetcode question 1457 (minimum-difficulty-of-a-job-schedule).

Leetcode 1458 Solution

This article provides solution to leetcode question 1458 (sort-integers-by-the-number-of-1-bits).

Leetcode 1460 Solution

This article provides solution to leetcode question 1460 (number-of-substrings-containing-all-three-characters).

Leetcode 1464 Solution

This article provides solution to leetcode question 1464 (reduce-array-size-to-the-half).

Leetcode 1465 Solution

This article provides solution to leetcode question 1465 (maximum-product-of-splitted-binary-tree).

Leetcode 1466 Solution

This article provides solution to leetcode question 1466 (jump-game-v).

Leetcode 1468 Solution

This article provides solution to leetcode question 1468 (check-if-n-and-its-double-exist).

Leetcode 1469 Solution

This article provides solution to leetcode question 1469 (minimum-number-of-steps-to-make-two-strings-anagram).

Leetcode 1470 Solution

This article provides solution to leetcode question 1470 (tweet-counts-per-frequency).

Leetcode 1473 Solution

This article provides solution to leetcode question 1473 (find-the-longest-substring-containing-vowels-in-even-counts).

Leetcode 1474 Solution

This article provides solution to leetcode question 1474 (longest-zigzag-path-in-a-binary-tree).

Leetcode 1476 Solution

This article provides solution to leetcode question 1476 (count-negative-numbers-in-a-sorted-matrix).

Leetcode 1477 Solution

This article provides solution to leetcode question 1477 (product-of-the-last-k-numbers).

Leetcode 1478 Solution

This article provides solution to leetcode question 1478 (maximum-number-of-events-that-can-be-attended).

Leetcode 1482 Solution

This article provides solution to leetcode question 1482 (how-many-numbers-are-smaller-than-the-current-number).

Leetcode 1483 Solution

This article provides solution to leetcode question 1483 (rank-teams-by-votes).

Leetcode 1484 Solution

This article provides solution to leetcode question 1484 (linked-list-in-binary-tree).

Leetcode 1485 Solution

This article provides solution to leetcode question 1485 (minimum-cost-to-make-at-least-one-valid-path-in-a-grid).

Leetcode 1486 Solution

This article provides solution to leetcode question 1486 (find-the-distance-value-between-two-arrays).

Leetcode 1487 Solution

This article provides solution to leetcode question 1487 (cinema-seat-allocation).

Leetcode 1488 Solution

This article provides solution to leetcode question 1488 (sort-integers-by-the-power-value).

Leetcode 1491 Solution

This article provides solution to leetcode question 1491 (number-of-times-binary-string-is-prefix-aligned).

Leetcode 1492 Solution

This article provides solution to leetcode question 1492 (time-needed-to-inform-all-employees).

Leetcode 1496 Solution

This article provides solution to leetcode question 1496 (lucky-numbers-in-a-matrix).

Leetcode 1497 Solution

This article provides solution to leetcode question 1497 (design-a-stack-with-increment-operation).

Leetcode 1498 Solution

This article provides solution to leetcode question 1498 (find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree).

Leetcode 1500 Solution

This article provides solution to leetcode question 1500 (count-largest-group).

Leetcode 1502 Solution

This article provides solution to leetcode question 1502 (construct-k-palindrome-strings).

Leetcode 1510 Solution

This article provides solution to leetcode question 1510 (find-lucky-integer-in-an-array).

Leetcode 1511 Solution

This article provides solution to leetcode question 1511 (count-number-of-teams).

Leetcode 1514 Solution

This article provides solution to leetcode question 1514 (minimum-value-to-get-positive-step-by-step-sum).

Leetcode 1515 Solution

This article provides solution to leetcode question 1515 (find-the-minimum-number-of-fibonacci-numbers-whose-sum-is-k).

Leetcode 1516 Solution

This article provides solution to leetcode question 1516 (the-k-th-lexicographical-string-of-all-happy-strings-of-length-n).

Leetcode 1519 Solution

This article provides solution to leetcode question 1519 (minimum-subsequence-in-non-increasing-order).

Leetcode 1520 Solution

This article provides solution to leetcode question 1520 (number-of-steps-to-reduce-a-number-in-binary-representation-to-one).

Leetcode 1524 Solution

This article provides solution to leetcode question 1524 (string-matching-in-an-array).

Leetcode 1532 Solution

This article provides solution to leetcode question 1532 (reformat-the-string).

Leetcode 1534 Solution

This article provides solution to leetcode question 1534 (minimum-number-of-frogs-croaking).

Leetcode 1537 Solution

This article provides solution to leetcode question 1537 (maximum-score-after-splitting-a-string).

Leetcode 1538 Solution

This article provides solution to leetcode question 1538 (maximum-points-you-can-obtain-from-cards).

Leetcode 1539 Solution

This article provides solution to leetcode question 1539 (diagonal-traverse-ii).

Leetcode 1542 Solution

This article provides solution to leetcode question 1542 (consecutive-characters).

Leetcode 1544 Solution

This article provides solution to leetcode question 1544 (count-good-nodes-in-binary-tree).

Leetcode 1547 Solution

This article provides solution to leetcode question 1547 (destination-city).

Leetcode 1548 Solution

This article provides solution to leetcode question 1548 (check-if-all-1s-are-at-least-length-k-places-away).

Leetcode 1549 Solution

This article provides solution to leetcode question 1549 (longest-continuous-subarray-with-absolute-diff-less-than-or-equal-to-limit).

Leetcode 1554 Solution

This article provides solution to leetcode question 1554 (minimum-time-to-collect-all-apples-in-a-tree).

Leetcode 1556 Solution

This article provides solution to leetcode question 1556 (make-two-arrays-equal-by-reversing-sub-arrays).

Leetcode 1558 Solution

This article provides solution to leetcode question 1558 (course-schedule-iv).

Leetcode 1570 Solution

This article provides solution to leetcode question 1570 (final-prices-with-a-special-discount-in-a-shop).

Leetcode 1573 Solution

This article provides solution to leetcode question 1573 (find-two-non-overlapping-sub-arrays-each-with-target-sum).

Leetcode 1574 Solution

This article provides solution to leetcode question 1574 (maximum-product-of-two-elements-in-an-array).

Leetcode 1585 Solution

This article provides solution to leetcode question 1585 (the-kth-factor-of-n).

Leetcode 1586 Solution

This article provides solution to leetcode question 1586 (longest-subarray-of-1s-after-deleting-one-element).

Leetcode 1603 Solution

This article provides solution to leetcode question 1603 (running-sum-of-1d-array).

Leetcode 1604 Solution

This article provides solution to leetcode question 1604 (least-number-of-unique-integers-after-k-removals).

Leetcode 1610 Solution

This article provides solution to leetcode question 1610 (xor-operation-in-an-array).

Leetcode 1612 Solution

This article provides solution to leetcode question 1612 (avoid-flood-in-the-city).

Leetcode 1615 Solution

This article provides solution to leetcode question 1615 (range-sum-of-sorted-subarray-sums).

Leetcode 1616 Solution

This article provides solution to leetcode question 1616 (minimum-difference-between-largest-and-smallest-value-in-three-moves).

Leetcode 1619 Solution

This article provides solution to leetcode question 1619 (path-crossing).

Leetcode 1620 Solution

This article provides solution to leetcode question 1620 (check-if-array-pairs-are-divisible-by-k).

Leetcode 1621 Solution

This article provides solution to leetcode question 1621 (number-of-subsequences-that-satisfy-the-given-sum-condition).

Leetcode 1628 Solution

This article provides solution to leetcode question 1628 (count-submatrices-with-all-ones).

Leetcode 1630 Solution

This article provides solution to leetcode question 1630 (count-odd-numbers-in-an-interval-range).

Leetcode 1631 Solution

This article provides solution to leetcode question 1631 (number-of-sub-arrays-with-odd-sum).

Leetcode 1635 Solution

This article provides solution to leetcode question 1635 (number-of-good-pairs).

Leetcode 1638 Solution

This article provides solution to leetcode question 1638 (best-position-for-a-service-centre).

Leetcode 1643 Solution

This article provides solution to leetcode question 1643 (number-of-nodes-in-the-sub-tree-with-the-same-label).

Leetcode 1646 Solution

This article provides solution to leetcode question 1646 (kth-missing-positive-number).

Leetcode 1648 Solution

This article provides solution to leetcode question 1648 (minimum-insertions-to-balance-a-parentheses-string).

Leetcode 1649 Solution

This article provides solution to leetcode question 1649 (maximum-number-of-non-overlapping-subarrays-with-sum-equals-target).

Leetcode 1651 Solution

This article provides solution to leetcode question 1651 (shuffle-string).

Leetcode 1660 Solution

This article provides solution to leetcode question 1660 (thousand-separator).

Leetcode 1661 Solution

This article provides solution to leetcode question 1661 (minimum-number-of-vertices-to-reach-all-nodes).

Leetcode 1662 Solution

This article provides solution to leetcode question 1662 (minimum-numbers-of-function-calls-to-make-target-array).

Leetcode 1663 Solution

This article provides solution to leetcode question 1663 (detect-cycles-in-2d-grid).

Leetcode 1665 Solution

This article provides solution to leetcode question 1665 (diameter-of-n-ary-tree).

Leetcode 1666 Solution

This article provides solution to leetcode question 1666 (make-the-string-great).

Leetcode 1667 Solution

This article provides solution to leetcode question 1667 (find-kth-bit-in-nth-binary-string).

Leetcode 1674 Solution

This article provides solution to leetcode question 1674 (minimum-operations-to-make-array-equal).

Leetcode 1675 Solution

This article provides solution to leetcode question 1675 (magnetic-force-between-two-balls).

Leetcode 1677 Solution

This article provides solution to leetcode question 1677 (matrix-diagonal-sum).

Leetcode 1678 Solution

This article provides solution to leetcode question 1678 (number-of-ways-to-split-a-string).

Leetcode 1683 Solution

This article provides solution to leetcode question 1683 (maximum-number-of-coins-you-can-get).

Leetcode 1684 Solution

This article provides solution to leetcode question 1684 (find-latest-group-of-size-m).

Leetcode 1690 Solution

This article provides solution to leetcode question 1690 (maximum-length-of-subarray-with-positive-product).

Leetcode 1693 Solution

This article provides solution to leetcode question 1693 (sum-of-all-odd-length-subarrays).

Leetcode 1694 Solution

This article provides solution to leetcode question 1694 (make-sum-divisible-by-p).

Leetcode 1697 Solution

This article provides solution to leetcode question 1697 (strings-differ-by-one-character).

Leetcode 1699 Solution

This article provides solution to leetcode question 1699 (number-of-ways-where-square-of-number-is-equal-to-product-of-two-numbers).

Leetcode 1700 Solution

This article provides solution to leetcode question 1700 (minimum-time-to-make-rope-colorful).

Leetcode 1701 Solution

This article provides solution to leetcode question 1701 (remove-max-number-of-edges-to-keep-graph-fully-traversable).

Leetcode 1704 Solution

This article provides solution to leetcode question 1704 (special-positions-in-a-binary-matrix).

Leetcode 1711 Solution

This article provides solution to leetcode question 1711 (find-valid-matrix-given-row-and-column-sums).

Leetcode 1716 Solution

This article provides solution to leetcode question 1716 (maximum-non-negative-product-in-a-matrix).

Leetcode 1725 Solution

This article provides solution to leetcode question 1725 (number-of-sets-of-k-non-overlapping-line-segments).

Leetcode 1731 Solution

This article provides solution to leetcode question 1731 (even-odd-tree).

Leetcode 1738 Solution

This article provides solution to leetcode question 1738 (maximal-network-rank).

Leetcode 1741 Solution

This article provides solution to leetcode question 1741 (sort-array-by-increasing-frequency).

Leetcode 1748 Solution

This article provides solution to leetcode question 1748 (best-team-with-no-conflicts).

Leetcode 1752 Solution

This article provides solution to leetcode question 1752 (arithmetic-subarrays).

Leetcode 1753 Solution

This article provides solution to leetcode question 1753 (path-with-minimum-effort).

Leetcode 1755 Solution

This article provides solution to leetcode question 1755 (defuse-the-bomb).

Leetcode 1756 Solution

This article provides solution to leetcode question 1756 (minimum-deletions-to-make-string-balanced).

Leetcode 1757 Solution

This article provides solution to leetcode question 1757 (minimum-jumps-to-reach-home).

Leetcode 1760 Solution

This article provides solution to leetcode question 1760 (check-array-formation-through-concatenation).

Leetcode 1761 Solution

This article provides solution to leetcode question 1761 (count-sorted-vowel-strings).

Leetcode 1762 Solution

This article provides solution to leetcode question 1762 (furthest-building-you-can-reach).

Leetcode 1766 Solution

This article provides solution to leetcode question 1766 (minimum-number-of-removals-to-make-mountain-array).

Leetcode 1767 Solution

This article provides solution to leetcode question 1767 (design-front-middle-back-queue).

Leetcode 1770 Solution

This article provides solution to leetcode question 1770 (minimum-deletions-to-make-character-frequencies-unique).

Leetcode 1774 Solution

This article provides solution to leetcode question 1774 (add-two-polynomials-represented-as-linked-lists).

Leetcode 1780 Solution

This article provides solution to leetcode question 1780 (lowest-common-ancestor-of-a-binary-tree-ii).

Leetcode 1781 Solution

This article provides solution to leetcode question 1781 (check-if-two-string-arrays-are-equivalent).

Leetcode 1782 Solution

This article provides solution to leetcode question 1782 (smallest-string-with-a-given-numeric-value).

Leetcode 1783 Solution

This article provides solution to leetcode question 1783 (ways-to-make-a-fair-array).

Leetcode 1787 Solution

This article provides solution to leetcode question 1787 (sum-of-absolute-differences-in-a-sorted-array).

Leetcode 1790 Solution

This article provides solution to leetcode question 1790 (lowest-common-ancestor-of-a-binary-tree-iii).

Leetcode 1792 Solution

This article provides solution to leetcode question 1792 (find-the-most-competitive-subsequence).

Leetcode 1796 Solution

This article provides solution to leetcode question 1796 (correct-a-binary-tree).

Leetcode 1798 Solution

This article provides solution to leetcode question 1798 (max-number-of-k-sum-pairs).

Leetcode 1800 Solution

This article provides solution to leetcode question 1800 (concatenation-of-consecutive-binary-numbers).

Leetcode 1806 Solution

This article provides solution to leetcode question 1806 (count-of-matches-in-tournament).

Leetcode 1814 Solution

This article provides solution to leetcode question 1814 (jump-game-vi).

Leetcode 1816 Solution

This article provides solution to leetcode question 1816 (lowest-common-ancestor-of-a-binary-tree-iv).

Leetcode 1823 Solution

This article provides solution to leetcode question 1823 (determine-if-string-halves-are-alike).

Leetcode 1824 Solution

This article provides solution to leetcode question 1824 (maximum-number-of-eaten-apples).

Leetcode 1829 Solution

This article provides solution to leetcode question 1829 (maximum-units-on-a-truck).

Leetcode 1831 Solution

This article provides solution to leetcode question 1831 (ways-to-split-array-into-three-subarrays).

Leetcode 1843 Solution

This article provides solution to leetcode question 1843 (number-of-rectangles-that-can-form-the-largest-square).

Leetcode 1851 Solution

This article provides solution to leetcode question 1851 (maximum-number-of-events-that-can-be-attended-ii).

Leetcode 1866 Solution

This article provides solution to leetcode question 1866 (restore-the-array-from-adjacent-pairs).

Leetcode 1876 Solution

This article provides solution to leetcode question 1876 (map-of-highest-peak).

Leetcode 1878 Solution

This article provides solution to leetcode question 1878 (check-if-array-is-sorted-and-rotated).

Leetcode 1880 Solution

This article provides solution to leetcode question 1880 (largest-merge-of-two-strings).

Leetcode 1883 Solution

This article provides solution to leetcode question 1883 (find-distance-in-a-binary-tree).

Leetcode 1905 Solution

This article provides solution to leetcode question 1905 (design-authentication-manager).

Leetcode 1911 Solution

This article provides solution to leetcode question 1911 (minimum-elements-to-add-to-form-a-given-sum).

Leetcode 1927 Solution

This article provides solution to leetcode question 1927 (maximum-ascending-subarray-sum).

Leetcode 1938 Solution

This article provides solution to leetcode question 1938 (minimum-operations-to-make-the-array-increasing).

Leetcode 1945 Solution

This article provides solution to leetcode question 1945 (finding-the-users-active-minutes).

Leetcode 1946 Solution

This article provides solution to leetcode question 1946 (minimum-absolute-sum-difference).

Leetcode 1962 Solution

This article provides solution to leetcode question 1962 (single-threaded-cpu).

Leetcode 1972 Solution

This article provides solution to leetcode question 1972 (rotating-the-box).

Leetcode 1997 Solution

This article provides solution to leetcode question 1997 (next-palindrome-using-same-digits).

Leetcode 2001 Solution

This article provides solution to leetcode question 2001 (jump-game-vii).

Leetcode 2012 Solution

This article provides solution to leetcode question 2012 (process-tasks-using-servers).

Leetcode 2019 Solution

This article provides solution to leetcode question 2019 (product-of-two-run-length-encoded-arrays).

Leetcode 2021 Solution

This article provides solution to leetcode question 2021 (remove-all-occurrences-of-a-substring).

Leetcode 2035 Solution

This article provides solution to leetcode question 2035 (count-sub-islands).

Leetcode 2038 Solution

This article provides solution to leetcode question 2038 (nearest-exit-from-entrance-in-maze).

Leetcode 2048 Solution

This article provides solution to leetcode question 2048 (build-array-from-permutation).

Leetcode 2053 Solution

This article provides solution to leetcode question 2053 (check-if-all-characters-have-equal-number-of-occurrences).

Leetcode 2054 Solution

This article provides solution to leetcode question 2054 (the-number-of-the-smallest-unoccupied-chair).

Leetcode 2067 Solution

This article provides solution to leetcode question 2067 (maximum-number-of-points-with-cost).

Leetcode 2085 Solution

This article provides solution to leetcode question 2085 (array-with-elements-not-equal-to-average-of-neighbors).

Leetcode 2095 Solution

This article provides solution to leetcode question 2095 (minimum-number-of-swaps-to-make-the-string-balanced).

Leetcode 2106 Solution

This article provides solution to leetcode question 2106 (find-greatest-common-divisor-of-array).

Leetcode 2112 Solution

This article provides solution to leetcode question 2112 (minimum-difference-between-highest-and-lowest-of-k-scores).

Leetcode 2113 Solution

This article provides solution to leetcode question 2113 (find-the-kth-largest-integer-in-the-array).

Leetcode 2117 Solution

This article provides solution to leetcode question 2117 (find-original-array-from-doubled-array).

Leetcode 2132 Solution

This article provides solution to leetcode question 2132 (convert-1d-array-into-2d-array).

Leetcode 2139 Solution

This article provides solution to leetcode question 2139 (detect-squares).

Leetcode 2160 Solution

This article provides solution to leetcode question 2160 (minimum-operations-to-make-a-uni-value-grid).

Leetcode 2161 Solution

This article provides solution to leetcode question 2161 (stock-price-fluctuation).

Leetcode 2195 Solution

This article provides solution to leetcode question 2195 (time-needed-to-buy-tickets).

Leetcode 2211 Solution

This article provides solution to leetcode question 2211 (k-radius-subarray-averages).

Leetcode 2217 Solution

This article provides solution to leetcode question 2217 (step-by-step-directions-from-a-binary-tree-node-to-another).

Leetcode 2220 Solution

This article provides solution to leetcode question 2220 (find-all-possible-recipes-from-given-supplies).

Leetcode 2226 Solution

This article provides solution to leetcode question 2226 (rings-and-rods).

Leetcode 2243 Solution

This article provides solution to leetcode question 2243 (check-if-all-as-appears-before-all-bs).

Leetcode 2256 Solution

This article provides solution to leetcode question 2256 (count-words-obtained-after-adding-a-letter).

Leetcode 2268 Solution

This article provides solution to leetcode question 2268 (remove-all-ones-with-row-and-column-flips).

Leetcode 2279 Solution

This article provides solution to leetcode question 2279 (maximum-split-of-positive-even-integers).

Leetcode 2294 Solution

This article provides solution to leetcode question 2294 (minimum-time-to-complete-trips).

Leetcode 2297 Solution

This article provides solution to leetcode question 2297 (amount-of-new-area-painted-each-day).

Leetcode 2305 Solution

This article provides solution to leetcode question 2305 (append-k-integers-with-minimal-sum).

Leetcode 2316 Solution

This article provides solution to leetcode question 2316 (count-hills-and-valleys-in-an-array).

Leetcode 2383 Solution

This article provides solution to leetcode question 2383 (add-two-integers).