Leetcode 1 Solution
This article provides solution to leetcode question 1 (two-sum)
Tag: lc-alg-hash-table
Leetcode 3 Solution
This article provides solution to leetcode question 3 (longest-substring-without-repeating-characters)
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 17 Solution
This article provides solution to leetcode question 17 (letter-combinations-of-a-phone-number)
Leetcode 30 Solution
This article provides solution to leetcode question 30 (substring-with-concatenation-of-all-words)
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 41 Solution
This article provides solution to leetcode question 41 (first-missing-positive)
Leetcode 49 Solution
This article provides solution to leetcode question 49 (group-anagrams)
Leetcode 73 Solution
This article provides solution to leetcode question 73 (set-matrix-zeroes)
Leetcode 76 Solution
This article provides solution to leetcode question 76 (minimum-window-substring)
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 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 133 Solution
This article provides solution to leetcode question 133 (clone-graph)
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 146 Solution
This article provides solution to leetcode question 146 (lru-cache)
Leetcode 149 Solution
This article provides solution to leetcode question 149 (max-points-on-a-line)
Leetcode 160 Solution
This article provides solution to leetcode question 160 (intersection-of-two-linked-lists)
Leetcode 166 Solution
This article provides solution to leetcode question 166 (fraction-to-recurring-decimal)
Leetcode 169 Solution
This article provides solution to leetcode question 169 (majority-element)
Leetcode 187 Solution
This article provides solution to leetcode question 187 (repeated-dna-sequences)
Leetcode 202 Solution
This article provides solution to leetcode question 202 (happy-number)
Leetcode 205 Solution
This article provides solution to leetcode question 205 (isomorphic-strings)
Leetcode 208 Solution
This article provides solution to leetcode question 208 (implement-trie-prefix-tree)
Leetcode 217 Solution
This article provides solution to leetcode question 217 (contains-duplicate)
Leetcode 219 Solution
This article provides solution to leetcode question 219 (contains-duplicate-ii)
Leetcode 229 Solution
This article provides solution to leetcode question 229 (majority-element-ii)
Leetcode 242 Solution
This article provides solution to leetcode question 242 (valid-anagram)
Leetcode 264 Solution
This article provides solution to leetcode question 264 (ugly-number-ii)
Leetcode 268 Solution
This article provides solution to leetcode question 268 (missing-number)
Leetcode 290 Solution
This article provides solution to leetcode question 290 (word-pattern)
Leetcode 299 Solution
This article provides solution to leetcode question 299 (bulls-and-cows)
Leetcode 336 Solution
This article provides solution to leetcode question 336 (palindrome-pairs)
Leetcode 347 Solution
This article provides solution to leetcode question 347 (top-k-frequent-elements)
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 355 Solution
This article provides solution to leetcode question 355 (design-twitter)
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 383 Solution
This article provides solution to leetcode question 383 (ransom-note)
Leetcode 387 Solution
This article provides solution to leetcode question 387 (first-unique-character-in-a-string)
Leetcode 389 Solution
This article provides solution to leetcode question 389 (find-the-difference)
Leetcode 395 Solution
This article provides solution to leetcode question 395 (longest-substring-with-at-least-k-repeating-characters)
Leetcode 398 Solution
This article provides solution to leetcode question 398 (random-pick-index)
Leetcode 409 Solution
This article provides solution to leetcode question 409 (longest-palindrome)
Leetcode 421 Solution
This article provides solution to leetcode question 421 (maximum-xor-of-two-numbers-in-an-array)
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 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 438 Solution
This article provides solution to leetcode question 438 (find-all-anagrams-in-a-string)
Leetcode 442 Solution
This article provides solution to leetcode question 442 (find-all-duplicates-in-an-array)
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 451 Solution
This article provides solution to leetcode question 451 (sort-characters-by-frequency)
Leetcode 454 Solution
This article provides solution to leetcode question 454 (4sum-ii)
Leetcode 457 Solution
This article provides solution to leetcode question 457 (circular-array-loop)
Leetcode 460 Solution
This article provides solution to leetcode question 460 (lfu-cache)
Leetcode 480 Solution
This article provides solution to leetcode question 480 (sliding-window-median)
Leetcode 496 Solution
This article provides solution to leetcode question 496 (next-greater-element-i)
Leetcode 500 Solution
This article provides solution to leetcode question 500 (keyboard-row)
Leetcode 508 Solution
This article provides solution to leetcode question 508 (most-frequent-subtree-sum)
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 525 Solution
This article provides solution to leetcode question 525 (contiguous-array)
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 554 Solution
This article provides solution to leetcode question 554 (brick-wall)
Leetcode 560 Solution
This article provides solution to leetcode question 560 (subarray-sum-equals-k)
Leetcode 567 Solution
This article provides solution to leetcode question 567 (permutation-in-string)
Leetcode 575 Solution
This article provides solution to leetcode question 575 (distribute-candies)
Leetcode 594 Solution
This article provides solution to leetcode question 594 (longest-harmonious-subsequence)
Leetcode 599 Solution
This article provides solution to leetcode question 599 (minimum-index-sum-of-two-lists)
Leetcode 609 Solution
This article provides solution to leetcode question 609 (find-duplicate-file-in-system)
Leetcode 621 Solution
This article provides solution to leetcode question 621 (task-scheduler)
Leetcode 632 Solution
This article provides solution to leetcode question 632 (smallest-range-covering-elements-from-k-lists)
Leetcode 645 Solution
This article provides solution to leetcode question 645 (set-mismatch)
Leetcode 648 Solution
This article provides solution to leetcode question 648 (replace-words)
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 659 Solution
This article provides solution to leetcode question 659 (split-array-into-consecutive-subsequences)
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 690 Solution
This article provides solution to leetcode question 690 (employee-importance)
Leetcode 692 Solution
This article provides solution to leetcode question 692 (top-k-frequent-words)
Leetcode 697 Solution
This article provides solution to leetcode question 697 (degree-of-an-array)
Leetcode 720 Solution
This article provides solution to leetcode question 720 (longest-word-in-dictionary)
Leetcode 736 Solution
This article provides solution to leetcode question 736 (parse-lisp-expression)
Leetcode 740 Solution
This article provides solution to leetcode question 740 (delete-and-earn)
Leetcode 746 Solution
This article provides solution to leetcode question 746 (prefix-and-suffix-search)
Leetcode 753 Solution
This article provides solution to leetcode question 753 (open-the-lock)
Leetcode 768 Solution
This article provides solution to leetcode question 768 (partition-labels)
Leetcode 778 Solution
This article provides solution to leetcode question 778 (reorganize-string)
Leetcode 782 Solution
This article provides solution to leetcode question 782 (jewels-and-stones)
Leetcode 797 Solution
This article provides solution to leetcode question 797 (rabbits-in-forest)
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 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 822 Solution
This article provides solution to leetcode question 822 (unique-morse-code-words)
Leetcode 829 Solution
This article provides solution to leetcode question 829 (subdomain-visit-count)
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 837 Solution
This article provides solution to leetcode question 837 (most-common-word)
Leetcode 843 Solution
This article provides solution to leetcode question 843 (binary-trees-with-factors)
Leetcode 876 Solution
This article provides solution to leetcode question 876 (hand-of-straights)
Leetcode 889 Solution
This article provides solution to leetcode question 889 (buddy-strings)
Leetcode 896 Solution
This article provides solution to leetcode question 896 (smallest-subtree-with-all-the-deepest-nodes)
Leetcode 905 Solution
This article provides solution to leetcode question 905 (length-of-longest-fibonacci-subsequence)
Leetcode 913 Solution
This article provides solution to leetcode question 913 (random-flip-matrix)
Leetcode 920 Solution
This article provides solution to leetcode question 920 (uncommon-words-from-two-sentences)
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 929 Solution
This article provides solution to leetcode question 929 (groups-of-special-equivalent-strings)
Leetcode 931 Solution
This article provides solution to leetcode question 931 (maximum-frequency-stack)
Leetcode 940 Solution
This article provides solution to leetcode question 940 (fruit-into-baskets)
Leetcode 947 Solution
This article provides solution to leetcode question 947 (online-election)
Leetcode 950 Solution
This article provides solution to leetcode question 950 (x-of-a-kind-in-a-deck-of-cards)
Leetcode 952 Solution
This article provides solution to leetcode question 952 (word-subsets)
Leetcode 959 Solution
This article provides solution to leetcode question 959 (3sum-with-multiplicity)
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 976 Solution
This article provides solution to leetcode question 976 (minimum-area-rectangle)
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 994 Solution
This article provides solution to leetcode question 994 (prison-cells-after-n-days)
Leetcode 1001 Solution
This article provides solution to leetcode question 1001 (n-repeated-element-in-size-2n-array)
Leetcode 1010 Solution
This article provides solution to leetcode question 1010 (powerful-integers)
Leetcode 1016 Solution
This article provides solution to leetcode question 1016 (subarray-sums-divisible-by-k)
Leetcode 1023 Solution
This article provides solution to leetcode question 1023 (time-based-key-value-store)
Leetcode 1029 Solution
This article provides solution to leetcode question 1029 (vertical-order-traversal-of-a-binary-tree)
Leetcode 1034 Solution
This article provides solution to leetcode question 1034 (subarrays-with-k-different-integers)
Leetcode 1039 Solution
This article provides solution to leetcode question 1039 (find-the-town-judge)
Leetcode 1044 Solution
This article provides solution to leetcode question 1044 (find-common-characters)
Leetcode 1055 Solution
This article provides solution to leetcode question 1055 (pairs-of-songs-with-total-durations-divisible-by-60)
Leetcode 1064 Solution
This article provides solution to leetcode question 1064 (smallest-integer-divisible-by-k)
Leetcode 1087 Solution
This article provides solution to leetcode question 1087 (longest-arithmetic-subsequence)
Leetcode 1112 Solution
This article provides solution to leetcode question 1112 (find-words-that-can-be-formed-by-characters)
Leetcode 1129 Solution
This article provides solution to leetcode question 1129 (longest-string-chain)
Leetcode 1147 Solution
This article provides solution to leetcode question 1147 (flip-columns-for-maximum-number-of-equal-rows)
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 1227 Solution
This article provides solution to leetcode question 1227 (number-of-equivalent-domino-pairs)
Leetcode 1238 Solution
This article provides solution to leetcode question 1238 (alphabet-board-path)
Leetcode 1249 Solution
This article provides solution to leetcode question 1249 (snapshot-array)
Leetcode 1256 Solution
This article provides solution to leetcode question 1256 (rank-transform-of-an-array)
Leetcode 1281 Solution
This article provides solution to leetcode question 1281 (can-make-palindrome-from-substring)
Leetcode 1297 Solution
This article provides solution to leetcode question 1297 (maximum-number-of-balloons)
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 1330 Solution
This article provides solution to leetcode question 1330 (longest-arithmetic-subsequence-of-given-difference)
Leetcode 1370 Solution
This article provides solution to leetcode question 1370 (count-number-of-nice-subarrays)
Leetcode 1387 Solution
This article provides solution to leetcode question 1387 (find-elements-in-a-contaminated-binary-tree)
Leetcode 1407 Solution
This article provides solution to leetcode question 1407 (group-the-people-given-the-group-size-they-belong-to)
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 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 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 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 1487 Solution
This article provides solution to leetcode question 1487 (cinema-seat-allocation)
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 1547 Solution
This article provides solution to leetcode question 1547 (destination-city)
Leetcode 1554 Solution
This article provides solution to leetcode question 1554 (minimum-time-to-collect-all-apples-in-a-tree)
Leetcode 1573 Solution
This article provides solution to leetcode question 1573 (find-two-non-overlapping-sub-arrays-each-with-target-sum)
Leetcode 1604 Solution
This article provides solution to leetcode question 1604 (least-number-of-unique-integers-after-k-removals)
Leetcode 1612 Solution
This article provides solution to leetcode question 1612 (avoid-flood-in-the-city)
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 1635 Solution
This article provides solution to leetcode question 1635 (number-of-good-pairs)
Leetcode 1643 Solution
This article provides solution to leetcode question 1643 (number-of-nodes-in-the-sub-tree-with-the-same-label)
Leetcode 1649 Solution
This article provides solution to leetcode question 1649 (maximum-number-of-non-overlapping-subarrays-with-sum-equals-target)
Leetcode 1694 Solution
This article provides solution to leetcode question 1694 (make-sum-divisible-by-p)
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 1741 Solution
This article provides solution to leetcode question 1741 (sort-array-by-increasing-frequency)
Leetcode 1760 Solution
This article provides solution to leetcode question 1760 (check-array-formation-through-concatenation)
Leetcode 1770 Solution
This article provides solution to leetcode question 1770 (minimum-deletions-to-make-character-frequencies-unique)
Leetcode 1798 Solution
This article provides solution to leetcode question 1798 (max-number-of-k-sum-pairs)
Leetcode 1866 Solution
This article provides solution to leetcode question 1866 (restore-the-array-from-adjacent-pairs)
Leetcode 1905 Solution
This article provides solution to leetcode question 1905 (design-authentication-manager)
Leetcode 1945 Solution
This article provides solution to leetcode question 1945 (finding-the-users-active-minutes)
Leetcode 2053 Solution
This article provides solution to leetcode question 2053 (check-if-all-characters-have-equal-number-of-occurrences)
Leetcode 2117 Solution
This article provides solution to leetcode question 2117 (find-original-array-from-doubled-array)
Leetcode 2139 Solution
This article provides solution to leetcode question 2139 (detect-squares)
Leetcode 2161 Solution
This article provides solution to leetcode question 2161 (stock-price-fluctuation)
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 2256 Solution
This article provides solution to leetcode question 2256 (count-words-obtained-after-adding-a-letter)