ProblemsSolved.md

Easy

• https://leetcode.com/problems/valid-palindrome/description/
• https://leetcode.com/problems/merge-sorted-array/description/
• https://leetcode.com/problems/score-of-a-string
• https://leetcode.com/problems/minimum-number-of-moves-to-seat-everyone
• https://leetcode.com/problems/relative-sort-array
• https://leetcode.com/problems/height-checker
• https://leetcode.com/problems/reverse-string
• https://leetcode.com/problems/search-insert-position
• https://leetcode.com/problems/find-the-index-of-the-first-occurrence-in-a-string
• https://leetcode.com/problems/remove-element
• https://leetcode.com/problems/remove-duplicates-from-sorted-array
• https://leetcode.com/problems/valid-parentheses
• https://leetcode.com/problems/palindrome-number
• https://leetcode.com/problems/two-sum
• https://leetcode.com/problems/same-tree/
• https://leetcode.com/problems/symmetric-tree/description/
• https://leetcode.com/problems/binary-tree-inorder-traversal/description/
• https://leetcode.com/problems/binary-tree-preorder-traversal/
• https://leetcode.com/problems/binary-tree-postorder-traversal/
• https://leetcode.com/problems/sqrtx/description/
• https://leetcode.com/problems/maximum-depth-of-binary-tree/
• https://leetcode.com/problems/linked-list-cycle/
• https://leetcode.com/problems/reverse-linked-list/
• https://leetcode.com/problems/power-of-two/
• https://leetcode.com/problems/count-pairs-whose-sum-is-less-than-target/
• https://leetcode.com/problems/balanced-binary-tree/
• https://leetcode.com/problems/search-in-a-binary-search-tree/description/
• https://leetcode.com/problems/palindrome-linked-list/
• https://leetcode.com/problems/remove-linked-list-elements/description/
• https://leetcode.com/problems/middle-of-the-linked-list/description/
• https://leetcode.com/problems/three-consecutive-odds/description/?envType=daily-question&envId=2024-07-01
• https://leetcode.com/problems/convert-binary-number-in-a-linked-list-to-integer/description/
• https://leetcode.com/problems/remove-duplicates-from-sorted-list/
• https://leetcode.com/problems/find-the-sum-of-encrypted-integers/
• https://leetcode.com/problems/intersection-of-two-arrays-ii/description/?envType=daily-question&envId=2024-07-02
• https://leetcode.com/problems/intersection-of-two-arrays/
• https://leetcode.com/problems/intersection-of-two-linked-lists/
• https://leetcode.com/problems/intersection-of-multiple-arrays/description/
• https://leetcode.com/problems/smallest-even-multiple/description/
• https://leetcode.com/problems/subtree-of-another-tree/description/
• https://leetcode.com/problems/pass-the-pillow/?envType=daily-question&envId=2024-07-06
• https://leetcode.com/problems/valid-phone-numbers/
• https://leetcode.com/problems/tenth-line/
• https://leetcode.com/problems/water-bottles/?envType=daily-question&envId=2024-07-07
• https://leetcode.com/problems/crawler-log-folder/?envType=daily-question&envId=2024-07-10
• https://leetcode.com/problems/lucky-numbers-in-a-matrix/?envType=daily-question&envId=2024-07-19
• https://leetcode.com/problems/sort-the-people/?envType=daily-question&envId=2024-07-22
• https://leetcode.com/problems/sort-array-by-increasing-frequency/?envType=daily-question&envId=2024-07-23
• https://leetcode.com/problems/merge-two-sorted-lists/
• https://leetcode.com/problems/plus-one/
• https://leetcode.com/problems/longest-common-prefix/
• https://leetcode.com/problems/length-of-last-word/
• https://leetcode.com/problems/number-of-senior-citizens/?envType=daily-question&envId=2024-08-01
• https://leetcode.com/problems/make-two-arrays-equal-by-reversing-subarrays/?envType=daily-question&envId=2024-08-03
• https://leetcode.com/problems/kth-distinct-string-in-an-array/?envType=daily-question&envId=2024-08-05
• https://leetcode.com/problems/roman-to-integer/
• https://leetcode.com/problems/majority-element/description/
• https://leetcode.com/problems/best-time-to-buy-and-sell-stock/
• https://leetcode.com/problems/is-subsequence/
• https://leetcode.com/problems/kth-largest-element-in-a-stream/?envType=daily-question&envId=2024-08-12
• https://leetcode.com/problems/valid-anagram/description/
• https://leetcode.com/problems/lemonade-change/?envType=daily-question&envId=2024-08-15
• https://leetcode.com/problems/number-complement/submissions/1364940898/?envType=daily-question&envId=2024-08-22
• https://leetcode.com/problems/n-ary-tree-postorder-traversal/?envType=daily-question&envId=2024-08-26
• https://leetcode.com/problems/ransom-note/?envType=study-plan-v2&envId=top-interview-150
• https://leetcode.com/problems/pascals-triangle/
• https://leetcode.com/problems/fibonacci-number/
• https://leetcode.com/problems/generate-fibonacci-sequence/
• https://leetcode.com/problems/check-if-array-is-sorted-and-rotated/
• https://leetcode.com/problems/move-zeroes/
• https://leetcode.com/problems/missing-number/
• https://leetcode.com/problems/max-consecutive-ones/
• https://leetcode.com/problems/single-number/
• https://leetcode.com/problems/maximum-score-after-splitting-a-string/?envType=daily-question&envId=2025-01-01
• https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree/
• https://leetcode.com/problems/count-the-number-of-incremovable-subarrays-i/
• https://leetcode.com/problems/image-smoother/
• https://leetcode.com/problems/add-binary/
• https://leetcode.com/problems/first-unique-character-in-a-string/
• https://leetcode.com/problems/excel-sheet-column-title/
• https://leetcode.com/problems/string-matching-in-an-array/?envType=daily-question&envId=2025-01-07
• https://leetcode.com/problems/count-prefix-and-suffix-pairs-i/?envType=daily-question&envId=2025-01-08
• https://leetcode.com/problems/counting-words-with-a-given-prefix/?envType=daily-question&envId=2025-01-09
• https://leetcode.com/problems/substring-matching-pattern/
• https://leetcode.com/problems/climbing-stairs/
• https://leetcode.com/problems/zigzag-grid-traversal-with-skip/
• https://leetcode.com/problems/number-of-1-bits/
• https://leetcode.com/problems/find-subsequence-of-length-k-with-the-largest-sum/
• https://leetcode.com/problems/find-the-distance-value-between-two-arrays/
• https://leetcode.com/problems/assign-cookies/
• https://leetcode.com/problems/find-the-difference/
• https://leetcode.com/problems/find-valid-pair-of-adjacent-digits-in-string/
• https://leetcode.com/problems/special-array-i/?envType=daily-question&envId=2025-02-01
• https://leetcode.com/problems/maximum-difference-between-even-and-odd-frequency-i/
• https://leetcode.com/problems/longest-strictly-increasing-or-strictly-decreasing-subarray/?envType=daily-question&envId=2025-02-03
• https://leetcode.com/problems/maximum-ascending-subarray-sum/?envType=daily-question&envId=2025-02-04
• https://leetcode.com/problems/check-if-one-string-swap-can-make-strings-equal/?envType=daily-question&envId=2025-02-05
• https://leetcode.com/problems/maximum-number-of-balloons/
• https://leetcode.com/problems/number-of-even-and-odd-bits/
• https://leetcode.com/problems/find-the-distinct-difference-array/
• https://leetcode.com/problems/clear-digits/?envType=daily-question&envId=2025-02-10
• https://leetcode.com/problems/contains-duplicate/
• https://leetcode.com/problems/counting-bits/
• https://leetcode.com/problems/reverse-bits/
• https://leetcode.com/problems/find-missing-and-repeated-values/
• https://leetcode.com/problems/invert-binary-tree/
• https://leetcode.com/problems/minimum-depth-of-binary-tree/
• https://leetcode.com/problems/path-sum/
• https://leetcode.com/problems/ugly-number/
• https://leetcode.com/problems/excel-sheet-column-number/
• https://leetcode.com/problems/pascals-triangle-ii/
• https://leetcode.com/problems/apply-operations-to-an-array/?envType=daily-question&envId=2025-03-01
• https://leetcode.com/problems/merge-two-2d-arrays-by-summing-values/?envType=daily-question&envId=2025-03-02
• https://leetcode.com/problems/minimum-recolors-to-get-k-consecutive-black-blocks/?envType=daily-question&envId=2025-03-08
• https://leetcode.com/problems/fruits-into-baskets-ii/
• https://leetcode.com/problems/happy-number/
• https://leetcode.com/problems/isomorphic-strings/
• https://leetcode.com/problems/maximum-count-of-positive-integer-and-negative-integer/?envType=daily-question&envId=2025-03-12

Medium

• https://leetcode.com/problems/minimum-time-to-complete-trips/description/
• https://leetcode.com/problems/grumpy-bookstore-owner/description/
• https://leetcode.com/problems/add-two-numbers
• https://leetcode.com/problems/reverse-integer
• https://leetcode.com/problems/string-to-integer-atoi
• https://leetcode.com/problems/container-with-most-water
• https://leetcode.com/problems/remove-nth-node-from-end-of-list
• https://leetcode.com/problems/divide-two-integers
• https://leetcode.com/problems/search-in-rotated-sorted-array
• https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array
• https://leetcode.com/problems/powx-n
• https://leetcode.com/problems/sort-colors
• https://leetcode.com/problems/find-the-duplicate-number
• https://leetcode.com/problems/continuous-subarray-sum
• https://leetcode.com/problems/sum-of-square-numbers
• https://leetcode.com/problems/most-profit-assigning-work
• https://leetcode.com/problems/hand-of-straights
• https://leetcode.com/problems/minimum-increment-to-make-array-unique
• https://leetcode.com/problems/divide-array-in-sets-of-k-consecutive-numbers
• https://leetcode.com/problems/minimum-number-of-days-to-make-m-bouquets
• https://leetcode.com/problems/magnetic-force-between-two-balls
• https://leetcode.com/problems/reduction-operations-to-make-the-array-elements-equal
• https://leetcode.com/problems/binary-tree-right-side-view/description/
• https://leetcode.com/problems/binary-subarrays-with-sum/
• https://leetcode.com/problems/count-number-of-nice-subarrays/description/?envType=daily-question&envId=2024-06-22
• https://leetcode.com/problems/subarray-product-less-than-k/
• https://leetcode.com/problems/contiguous-array/description/
• https://leetcode.com/problems/longest-continuous-subarray-with-absolute-diff-less-than-or-equal-to-limit/?envType=daily-question&envId=2024-06-23
• https://leetcode.com/problems/double-a-number-represented-as-a-linked-list/
• https://leetcode.com/problems/find-the-divisibility-array-of-a-string/description/
• https://leetcode.com/problems/k-closest-points-to-origin/
• https://leetcode.com/problems/minimum-difference-between-largest-and-smallest-value-in-three-moves/
• https://leetcode.com/problems/maximum-total-importance-of-roads/?envType=daily-question&envId=2024-06-28
• https://leetcode.com/problems/set-matrix-zeroes/
• https://leetcode.com/problems/max-sum-of-a-pair-with-equal-sum-of-digits/
• https://leetcode.com/problems/distinct-prime-factors-of-product-of-array/
• https://leetcode.com/problems/delete-node-in-a-linked-list/
• https://leetcode.com/problems/validate-binary-search-tree/
• https://leetcode.com/problems/binary-tree-level-order-traversal/
• https://leetcode.com/problems/remove-nodes-from-linked-list/description/
• https://leetcode.com/problems/minimum-index-of-a-valid-split/description/
• https://leetcode.com/problems/ways-to-split-array-into-good-subarrays/description/
• https://leetcode.com/problems/merge-nodes-in-between-zeros/?envType=daily-question&envId=2024-07-04
• https://leetcode.com/problems/word-frequency/description/
• https://leetcode.com/problems/transpose-file/description/
• https://leetcode.com/problems/find-the-winner-of-the-circular-game/?envType=daily-question&envId=2024-07-08
• https://leetcode.com/problems/average-waiting-time/description/?envType=daily-question&envId=2024-07-09
• https://leetcode.com/problems/reverse-substrings-between-each-pair-of-parentheses/?envType=daily-question&envId=2024-07-11
• https://leetcode.com/problems/maximum-score-from-removing-substrings/?envType=daily-question&envId=2024-07-12
• https://leetcode.com/problems/create-binary-tree-from-descriptions/?envType=daily-question&envId=2024-07-15
• https://leetcode.com/problems/step-by-step-directions-from-a-binary-tree-node-to-another/?envType=daily-question&envId=2024-07-16
• https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree/
• https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/
• https://leetcode.com/problems/delete-nodes-and-return-forest/?envType=daily-question&envId=2024-07-17
• https://leetcode.com/problems/number-of-good-leaf-nodes-pairs/?envType=daily-question&envId=2024-07-18
• https://leetcode.com/problems/find-valid-matrix-given-row-and-column-sums/?envType=daily-question&envId=2024-07-20
• https://leetcode.com/problems/sort-the-jumbled-numbers/?envType=daily-question&envId=2024-07-24
• https://leetcode.com/problems/sort-an-array/description/?envType=daily-question&envId=2024-07-25
• https://leetcode.com/problems/game-of-life/
• https://leetcode.com/problems/find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance/?envType=daily-question&envId=2024-07-26
• https://leetcode.com/problems/minimum-cost-to-convert-string-i/?envType=daily-question&envId=2024-07-27
• https://leetcode.com/problems/xor-queries-of-a-subarray/
• https://leetcode.com/problems/count-number-of-teams/description/?envType=daily-question&envId=2024-07-29
• https://leetcode.com/problems/get-equal-substrings-within-budget/description/
• https://leetcode.com/problems/minimum-deletions-to-make-string-balanced/description/?envType=daily-question&envId=2024-07-30
• https://leetcode.com/problems/filling-bookcase-shelves/?envType=daily-question&envId=2024-07-31
• https://leetcode.com/problems/permutations/
• https://leetcode.com/problems/longest-substring-without-repeating-characters/
• https://leetcode.com/problems/minimum-swaps-to-group-all-1s-together-ii/?envType=daily-question&envId=2024-08-02
• https://leetcode.com/problems/range-sum-of-sorted-subarray-sums/description/?envType=daily-question&envId=2024-08-04
• https://leetcode.com/problems/maximum-xor-of-two-numbers-in-an-array/
• https://leetcode.com/problems/minimum-number-of-pushes-to-type-word-ii/?envType=daily-question&envId=2024-08-06
• https://leetcode.com/problems/remove-duplicates-from-sorted-array-ii/
• https://leetcode.com/problems/spiral-matrix-iii/?envType=daily-question&envId=2024-08-08
• https://leetcode.com/problems/magic-squares-in-grid/
• https://leetcode.com/problems/regions-cut-by-slashes/description/?envType=daily-question&envId=2024-08-10
• https://leetcode.com/problems/combination-sum-ii/description/?envType=daily-question&envId=2024-08-13
• https://leetcode.com/problems/stone-game-ii/?envType=daily-question&envId=2024-08-20
• https://leetcode.com/problems/2-keys-keyboard/?envType=daily-question&envId=2024-08-19
• https://leetcode.com/problems/ugly-number-ii/description/?envType=daily-question&envId=2024-08-18
• https://leetcode.com/problems/most-stones-removed-with-same-row-or-column/submissions/1371959740/?envType=daily-question&envId=2024-08-29
• https://leetcode.com/problems/largest-number/?envType=daily-question&envId=2024-09-18
• https://leetcode.com/problems/different-ways-to-add-parentheses/?envType=daily-question&envId=2024-09-19
• https://leetcode.com/problems/extra-characters-in-a-string/description/?envType=daily-question&envId=2024-09-23
• https://leetcode.com/problems/maximum-subarray/
• https://leetcode.com/problems/next-permutation/
• https://leetcode.com/problems/find-the-length-of-the-longest-common-prefix/description/?envType=daily-question&envId=2024-09-24
• https://leetcode.com/problems/rotate-image/
• https://leetcode.com/problems/merge-intervals/
• https://leetcode.com/problems/frequency-of-the-most-frequent-element/
• https://leetcode.com/problems/unique-paths/
• https://leetcode.com/problems/search-a-2d-matrix/
• https://leetcode.com/problems/majority-element-ii/
• https://leetcode.com/problems/my-calendar-i/?envType=daily-question&envId=2024-09-26
• https://leetcode.com/problems/3sum/
• https://leetcode.com/problems/3sum-closest/
• https://leetcode.com/problems/rotate-array/
• https://leetcode.com/problems/check-if-array-pairs-are-divisible-by-k/?envType=daily-question&envId=2024-10-01
• https://leetcode.com/problems/count-vowel-strings-in-ranges/?envType=daily-question&envId=2025-01-02
• https://leetcode.com/problems/number-of-ways-to-split-array/?envType=daily-question&envId=2025-01-03
• https://leetcode.com/problems/circle-and-rectangle-overlapping/
• https://leetcode.com/problems/repeated-dna-sequences/
• https://leetcode.com/problems/unique-length-3-palindromic-subsequences/?envType=daily-question&envId=2025-01-04
• https://leetcode.com/problems/shopping-offers/
• https://leetcode.com/problems/wiggle-sort-ii/
• https://leetcode.com/problems/maximum-product-of-the-length-of-two-palindromic-subsequences/
• https://leetcode.com/problems/minimum-moves-to-equal-array-elements-ii/
• https://leetcode.com/problems/bulls-and-cows/
• https://leetcode.com/problems/random-point-in-non-overlapping-rectangles/
• https://leetcode.com/problems/shifting-letters-ii/?envType=daily-question&envId=2025-01-05
• https://leetcode.com/problems/minimum-number-of-operations-to-move-all-balls-to-each-box/?envType=daily-question&envId=2025-01-06
• https://leetcode.com/problems/maximum-sum-of-distinct-subarrays-with-length-k/description/
• https://leetcode.com/problems/longest-mountain-in-array/
• https://leetcode.com/problems/rotting-oranges/
• https://leetcode.com/problems/longest-subarray-of-1s-after-deleting-one-element/
• https://leetcode.com/problems/permutation-in-string/
• https://leetcode.com/problems/gas-station/
• https://leetcode.com/problems/amount-of-time-for-binary-tree-to-be-infected/
• https://leetcode.com/problems/word-subsets/?envType=daily-question&envId=2025-01-10
• https://leetcode.com/problems/valid-sudoku/
• https://leetcode.com/problems/longest-subsequence-with-decreasing-adjacent-difference/
• https://leetcode.com/problems/construct-k-palindrome-strings/?envType=daily-question&envId=2025-01-11
• https://leetcode.com/problems/design-task-manager/
• https://leetcode.com/problems/check-if-a-parentheses-string-can-be-valid/?envType=daily-question&envId=2025-01-12
• https://leetcode.com/problems/trapping-rain-water/
• https://leetcode.com/problems/minimum-length-of-string-after-operations/?envType=daily-question&envId=2025-01-13
• https://leetcode.com/problems/find-the-prefix-common-array-of-two-arrays/?envType=daily-question&envId=2025-01-14
• https://leetcode.com/problems/length-of-longest-subarray-with-at-most-k-frequency/
• https://leetcode.com/problems/minimize-xor/?envType=daily-question&envId=2025-01-15
• https://leetcode.com/problems/bitwise-xor-of-all-pairings/?envType=daily-question&envId=2025-01-16
• https://leetcode.com/problems/sort-characters-by-frequency/
• https://leetcode.com/problems/top-k-frequent-words/
• https://leetcode.com/problems/neighboring-bitwise-xor/?envType=daily-question&envId=2025-01-17
• https://leetcode.com/problems/word-break/
• https://leetcode.com/problems/k-diff-pairs-in-an-array/
• https://leetcode.com/problems/count-the-number-of-square-free-subsets/
• https://leetcode.com/problems/rotate-function/
• https://leetcode.com/problems/largest-divisible-subset/
• https://leetcode.com/problems/friends-of-appropriate-ages/
• https://leetcode.com/problems/maximum-length-of-repeated-subarray/
• https://leetcode.com/problems/verify-preorder-serialization-of-a-binary-tree/
• https://leetcode.com/problems/battleships-in-a-board/
• https://leetcode.com/problems/first-completely-painted-row-or-column/?envType=daily-question&envId=2025-01-20
• https://leetcode.com/problems/destroying-asteroids/
• https://leetcode.com/problems/stone-game-vi/
• https://leetcode.com/problems/maximum-product-after-k-increments/
• https://leetcode.com/problems/grid-game/?envType=daily-question&envId=2025-01-21
• https://leetcode.com/problems/design-add-and-search-words-data-structure/
• https://leetcode.com/problems/map-of-highest-peak/?envType=daily-question&envId=2025-01-22
• https://leetcode.com/problems/01-matrix/
• https://leetcode.com/problems/count-collisions-on-a-road/
• https://leetcode.com/problems/minimum-non-zero-product-of-the-array-elements/
• https://leetcode.com/problems/find-beautiful-indices-in-the-given-array-i/
• https://leetcode.com/problems/count-servers-that-communicate/?envType=daily-question&envId=2025-01-23
• https://leetcode.com/problems/throne-inheritance/
• https://leetcode.com/problems/count-words-obtained-after-adding-a-letter/
• https://leetcode.com/problems/find-eventual-safe-states/?envType=daily-question&envId=2025-01-24
• https://leetcode.com/problems/maximize-area-of-square-hole-in-grid/
• https://leetcode.com/problems/make-lexicographically-smallest-array-by-swapping-elements/?envType=daily-question&envId=2025-01-25
• https://leetcode.com/problems/number-of-ways-to-reach-a-position-after-exactly-k-steps/
• https://leetcode.com/problems/number-of-people-aware-of-a-secret/
• https://leetcode.com/problems/minimize-the-maximum-of-two-arrays/
• https://leetcode.com/problems/high-access-employees/
• https://leetcode.com/problems/course-schedule-iv/?envType=daily-question&envId=2025-01-27
• https://leetcode.com/problems/combination-sum-iii/
• https://leetcode.com/problems/random-flip-matrix/
• https://leetcode.com/problems/letter-combinations-of-a-phone-number/
• https://leetcode.com/problems/maximum-number-of-fish-in-a-grid/?envType=daily-question&envId=2025-01-28
• https://leetcode.com/problems/find-consecutive-integers-from-a-data-stream/
• https://leetcode.com/problems/k-divisible-elements-subarrays/
• https://leetcode.com/problems/redundant-connection/?envType=daily-question&envId=2025-01-29
• https://leetcode.com/problems/reschedule-meetings-for-maximum-free-time-i/
• https://leetcode.com/problems/reschedule-meetings-for-maximum-free-time-ii/
• https://leetcode.com/problems/maximum-manhattan-distance-after-k-changes/
• https://leetcode.com/problems/number-of-dice-rolls-with-target-sum/
• https://leetcode.com/problems/largest-merge-of-two-strings/
• https://leetcode.com/problems/tuple-with-same-product/?envType=daily-question&envId=2025-02-06
• https://leetcode.com/problems/find-the-number-of-distinct-colors-among-the-balls/?envType=daily-question&envId=2025-02-07
• https://leetcode.com/problems/design-a-number-container-system/?envType=daily-question&envId=2025-02-08
• https://leetcode.com/problems/remove-all-occurrences-of-a-substring/?envType=daily-question&envId=2025-02-11
• https://leetcode.com/problems/count-number-of-bad-pairs/?envType=daily-question&envId=2025-02-09
• https://leetcode.com/problems/minimum-operations-to-exceed-threshold-value-ii/?envType=daily-question&envId=2025-02-13
• https://leetcode.com/problems/product-of-the-last-k-numbers/?envType=daily-question&envId=2025-02-14
• https://leetcode.com/problems/find-the-punishment-number-of-an-integer/?envType=daily-question&envId=2025-02-15
• https://leetcode.com/problems/construct-the-lexicographically-largest-valid-sequence/?envType=daily-question&envId=2025-02-16
• https://leetcode.com/problems/letter-tile-possibilities/?envType=daily-question&envId=2025-02-17
• https://leetcode.com/problems/construct-smallest-number-from-di-string/?envType=daily-question&envId=2025-02-18
• https://leetcode.com/problems/find-unique-binary-string/?envType=daily-question&envId=2025-02-20
• https://leetcode.com/problems/recover-a-tree-from-preorder-traversal/?envType=daily-question&envId=2025-02-22
• https://leetcode.com/problems/find-elements-in-a-contaminated-binary-tree/?envType=daily-question&envId=2025-02-21
• https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii/
• https://leetcode.com/problems/maximum-product-subarray/
• https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/
• https://leetcode.com/problems/product-of-array-except-self/
• https://leetcode.com/problems/sum-of-two-integers/
• https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal/?envType=daily-question&envId=2025-02-23
• https://leetcode.com/problems/reorder-list/
• https://leetcode.com/problems/spiral-matrix/
• https://leetcode.com/problems/word-search/
• https://leetcode.com/problems/top-k-frequent-elements/
• https://leetcode.com/problems/insert-interval/
• https://leetcode.com/problems/course-schedule/
• https://leetcode.com/problems/course-schedule-ii/
• https://leetcode.com/problems/the-k-th-lexicographical-string-of-all-happy-strings-of-length-n/?envType=daily-question&envId=2025-02-19
• https://leetcode.com/problems/non-overlapping-intervals/
• https://leetcode.com/problems/kth-smallest-element-in-a-bst/
• https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal/
• https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/
• https://leetcode.com/problems/construct-binary-search-tree-from-preorder-traversal/
• https://leetcode.com/problems/most-profitable-path-in-a-tree/?envType=daily-question&envId=2025-02-24
• https://leetcode.com/problems/kth-largest-element-in-an-array/
• https://leetcode.com/problems/number-of-sub-arrays-with-odd-sum/?envType=daily-question&envId=2025-02-25
• https://leetcode.com/problems/longest-palindromic-substring/
• https://leetcode.com/problems/combination-sum/
• https://leetcode.com/problems/palindromic-substrings/
• https://leetcode.com/problems/maximum-absolute-sum-of-any-subarray/?envType=daily-question&envId=2025-02-26
• https://leetcode.com/problems/length-of-longest-fibonacci-subsequence/?envType=daily-question&envId=2025-02-27
• https://leetcode.com/problems/partition-array-according-to-given-pivot/?envType=daily-question&envId=2025-03-03
• https://leetcode.com/problems/check-if-number-is-a-sum-of-powers-of-three/?envType=daily-question&envId=2025-03-04
• https://leetcode.com/problems/count-total-number-of-colored-cells/?envType=daily-question&envId=2025-03-05
• https://leetcode.com/problems/alternating-groups-ii/?envType=daily-question&envId=2025-03-09
• https://leetcode.com/problems/count-of-substrings-containing-every-vowel-and-k-consonants-ii/?envType=daily-question&envId=2025-03-10
• https://leetcode.com/problems/choose-k-elements-with-maximum-sum/
• https://leetcode.com/problems/fruits-into-baskets-iii/
• https://leetcode.com/problems/number-of-substrings-containing-all-three-characters/?envType=daily-question&envId=2025-03-11
• https://leetcode.com/problems/count-and-say/

Hard

• https://leetcode.com/problems/median-of-two-sorted-arrays/description/
• https://leetcode.com/problems/count-subarrays-with-score-less-than-k/description/
• https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree/
• https://leetcode.com/problems/longest-valid-parentheses/
• https://leetcode.com/problems/ipo/
• https://leetcode.com/problems/tallest-billboard/
• https://leetcode.com/problems/minimum-swaps-to-make-sequences-increasing/
• https://leetcode.com/problems/find-minimum-in-rotated-sorted-array-ii/
• https://leetcode.com/problems/robot-collisions/?envType=daily-question&envId=2024-07-13
• https://leetcode.com/problems/number-of-atoms/description/?envType=daily-question&envId=2024-07-14
• https://leetcode.com/problems/build-a-matrix-with-conditions/?envType=daily-question&envId=2024-07-21
• https://leetcode.com/problems/merge-k-sorted-lists/
• https://leetcode.com/problems/second-minimum-time-to-reach-destination/description/?envType=daily-question&envId=2024-07-28
• https://leetcode.com/problems/integer-to-english-words/description/?envType=daily-question&envId=2024-08-07
• https://leetcode.com/problems/minimum-number-of-days-to-disconnect-island/?envType=daily-question&envId=2024-08-11
• https://leetcode.com/problems/find-k-th-smallest-pair-distance/?envType=daily-question&envId=2024-08-14
• https://leetcode.com/problems/find-the-closest-palindrome/?envType=daily-question&envId=2024-08-24
• https://leetcode.com/problems/strange-printer/description/?envType=daily-question&envId=2024-08-21
• https://leetcode.com/problems/shortest-palindrome/?envType=daily-question&envId=2024-09-20
• https://leetcode.com/problems/sum-of-prefix-scores-of-strings/?envType=daily-question&envId=2024-09-25
• https://leetcode.com/problems/reverse-pairs/
• https://leetcode.com/problems/russian-doll-envelopes/
• https://leetcode.com/problems/serialize-and-deserialize-binary-tree/
• https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv/
• https://leetcode.com/problems/find-number-of-ways-to-reach-the-k-th-stair/
• https://leetcode.com/problems/maximize-subarray-sum-after-removing-all-occurrences-of-one-element/
• https://leetcode.com/problems/minimum-cost-to-make-at-least-one-valid-path-in-a-grid/?envType=daily-question&envId=2025-01-18
• https://leetcode.com/problems/trapping-rain-water-ii/
• https://leetcode.com/problems/count-subtrees-with-max-distance-between-cities/
• https://leetcode.com/problems/sum-of-scores-of-built-strings/
• https://leetcode.com/problems/find-in-mountain-array/
• https://leetcode.com/problems/the-number-of-good-subsets/
• https://leetcode.com/problems/maximum-sum-bst-in-binary-tree/
• https://leetcode.com/problems/maximum-employees-to-be-invited-to-a-meeting/?envType=daily-question&envId=2025-01-26
• https://leetcode.com/problems/lfu-cache/
• https://leetcode.com/problems/divide-nodes-into-the-maximum-number-of-groups/?envType=daily-question&envId=2025-01-30
• https://leetcode.com/problems/n-queens/
• https://leetcode.com/problems/n-queens-ii/
• https://leetcode.com/problems/making-a-large-island/?envType=daily-question&envId=2025-01-31
• https://leetcode.com/problems/sudoku-solver/
• https://leetcode.com/problems/maximum-difference-between-even-and-odd-frequency-ii/
• https://leetcode.com/problems/minimum-increments-for-target-multiples-in-an-array/
• https://leetcode.com/problems/consecutive-numbers-sum/
• https://leetcode.com/problems/minimum-obstacle-removal-to-reach-corner/
• https://leetcode.com/problems/minimum-time-to-revert-word-to-initial-state-ii/
• https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii/
• https://leetcode.com/problems/find-median-from-data-stream/
• https://leetcode.com/problems/course-schedule-iii/
• https://leetcode.com/problems/binary-tree-maximum-path-sum/
• https://leetcode.com/problems/shortest-common-supersequence/?envType=daily-question&envId=2025-02-28