List of problems

• 0kth-largest-element-in-an-array
• 0top-k-frequent-elements
• 1-two-sum
• 10-regular-expression-matching
• 100-same-tree
• 1009-complement-of-base-10-integer
• 101-symmetric-tree
• 1011-capacity-to-ship-packages-within-d-days
• 102-binary-tree-level-order-traversal
• 1022-sum-of-root-to-leaf-binary-numbers
• 104-maximum-depth-of-binary-tree
• 1041-robot-bounded-in-circle
• 1046-last-stone-weight
• 1047-remove-all-adjacent-duplicates-in-string
• 1048-longest-string-chain
• 105-construct-binary-tree-from-preorder-and-inorder-traversal
• 1074-number-of-submatrices-that-sum-to-target
• 108-convert-sorted-array-to-binary-search-tree
• 1091-shortest-path-in-binary-matrix
• 1094-car-pooling
• 11-container-with-most-water
• 1115-print-foobar-alternately
• 114-flatten-binary-tree-to-linked-list
• 116-populating-next-right-pointers-in-each-node
• 117-populating-next-right-pointers-in-each-node-ii
• 118-pascals-triangle
• 1192-critical-connections-in-a-network
• 1195-fizz-buzz-multithreaded
• 12-integer-to-roman
• 120-triangle
• 1202-smallest-string-with-swaps
• 1209-remove-all-adjacent-duplicates-in-string-ii
• 121-best-time-to-buy-and-sell-stock
• 1220-count-vowels-permutation
• 123-best-time-to-buy-and-sell-stock-iii
• 124-binary-tree-maximum-path-sum
• 1268-search-suggestions-system
• 127-word-ladder
• 128-longest-consecutive-sequence
• 1291-sequential-digits
• 1302-deepest-leaves-sum
• 1305-all-elements-in-two-binary-search-trees
• 131-palindrome-partitioning
• 1310-xor-queries-of-a-subarray
• 132-palindrome-partitioning-ii
• 1332-remove-palindromic-subsequences
• 134-gas-station
• 1342-number-of-steps-to-reduce-a-number-to-zero
• 1345-jump-game-iv
• 135-candy
• 1354-construct-target-array-with-multiple-sums
• 1379-find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree
• 138-copy-list-with-random-pointer
• 1396-design-underground-system
• 140-word-break-ii
• 142-linked-list-cycle-ii
• 1423-maximum-points-you-can-obtain-from-cards
• 143-reorder-list
• 146-lru-cache
• 1461-check-if-a-string-contains-all-binary-codes-of-size-k
• 1463-cherry-pickup-ii
• 1465-maximum-area-of-a-piece-of-cake-after-horizontal-and-vertical-cuts
• 1472-design-browser-history
• 1480-running-sum-of-1d-array
• 1491-average-salary-excluding-the-minimum-and-maximum-salary
• 15-3sum
• 150-evaluate-reverse-polish-notation
• 1510-stone-game-iv
• 152-maximum-product-subarray
• 1523-count-odd-numbers-in-an-interval-range
• 155-min-stack
• 1584-min-cost-to-connect-all-points
• 1592-rearrange-spaces-between-words
• 1598-crawler-log-folder
• 160-intersection-of-two-linked-lists
• 1631-path-with-minimum-effort
• 1641-count-sorted-vowel-strings
• 1642-furthest-building-you-can-reach
• 1647-minimum-deletions-to-make-character-frequencies-unique
• 167-two-sum-ii-input-array-is-sorted
• 1672-richest-customer-wealth
• 1679-max-number-of-k-sum-pairs
• 1689-partitioning-into-minimum-number-of-deci-binary-numbers
• 1695-maximum-erasure-value
• 1696-jump-game-vi
• 17-letter-combinations-of-a-phone-number
• 1710-maximum-units-on-a-truck
• 1711-count-good-meals
• 172-factorial-trailing-zeroes
• 1720-decode-xored-array
• 1721-swapping-nodes-in-a-linked-list
• 173-binary-search-tree-iterator
• 179-largest-number
• 18-4sum
• 1863-sum-of-all-subset-xor-totals
• 189-rotate-array
• 191-number-of-1-bits
• 1929-concatenation-of-array
• 199-binary-tree-right-side-view
• 2-add-two-numbers
• 20-valid-parentheses
• 206-reverse-linked-list
• 21-merge-two-sorted-lists
• 211-design-add-and-search-words-data-structure
• 212-word-search-ii
• 2138-divide-a-string-into-groups-of-size-k
• 215-kth-largest-element-in-an-array
• 216-combination-sum-iii
• 224-basic-calculator
• 225-implement-stack-using-queues
• 226-invert-binary-tree
• 2279-maximum-bags-with-full-capacity-of-rocks
• 23-merge-k-sorted-lists
• 230-kth-smallest-element-in-a-bst
• 232-implement-queue-using-stacks
• 234-palindrome-linked-list
• 235-lowest-common-ancestor-of-a-binary-search-tree
• 236-lowest-common-ancestor-of-a-binary-tree
• 239-sliding-window-maximum
• 240-search-a-2d-matrix-ii
• 242-valid-anagram
• 258-add-digits
• 26-remove-duplicates-from-sorted-array
• 268-missing-number
• 284-peeking-iterator
• 287-find-the-duplicate-number
• 289-game-of-life
• 29-divide-two-integers
• 290-word-pattern
• 295-find-median-from-data-stream
• 297-serialize-and-deserialize-binary-tree
• 3-longest-substring-without-repeating-characters
• 300-longest-increasing-subsequence
• 303-range-sum-query-immutable
• 304-range-sum-query-2d-immutable
• 307-range-sum-query-mutable
• 31-next-permutation
• 315-count-of-smaller-numbers-after-self
• 3174-3292-414-third-maximum-number
• 318-maximum-product-of-word-lengths
• 32-longest-valid-parentheses
• 322-coin-change
• 329-longest-increasing-path-in-a-matrix
• 338-counting-bits
• 34-find-first-and-last-position-of-element-in-sorted-array
• 341-flatten-nested-list-iterator
• 344-reverse-string
• 347-top-k-frequent-elements
• 354-russian-doll-envelopes
• 355-design-twitter
• 376-wiggle-subsequence
• 382-linked-list-random-node
• 388-longest-absolute-file-path
• 389-find-the-difference
• 39-combination-sum
• 399-evaluate-division
• 4-median-of-two-sorted-arrays
• 406-queue-reconstruction-by-height
• 41-first-missing-positive
• 410-split-array-largest-sum
• 412-fizz-buzz
• 416-partition-equal-subset-sum
• 421-maximum-xor-of-two-numbers-in-an-array
• 429-n-ary-tree-level-order-traversal
• 438-find-all-anagrams-in-a-string
• 45-jump-game-ii
• 452-minimum-number-of-arrows-to-burst-balloons
• 454-4sum-ii
• 456-132-pattern
• 46-permutations
• 460-lfu-cache
• 462-minimum-moves-to-equal-array-elements-ii
• 463-island-perimeter
• 47-permutations-ii
• 473-matchsticks-to-square
• 474-ones-and-zeroes
• 494-target-sum
• 4sum-ii
• 5-longest-palindromic-substring
• 509-fibonacci-number
• 51-n-queens
• 52-n-queens-ii
• 520-detect-capital
• 525-contiguous-array
• 53-maximum-subarray
• 532-k-diff-pairs-in-an-array
• 535-encode-and-decode-tinyurl
• 538-convert-bst-to-greater-tree
• 543-diameter-of-binary-tree
• 560-subarray-sum-equals-k
• 567-permutation-in-string
• 575-distribute-candies
• 576-out-of-boundary-paths
• 581-shortest-unsorted-continuous-subarray
• 583-delete-operation-for-two-strings
• 59-spiral-matrix-ii
• 60-permutation-sequence
• 60133-2155-1-two-sum
• 605-can-place-flowers
• 63-unique-paths-ii
• 630-course-schedule-iii
• 64-minimum-path-sum
• 647-palindromic-substrings
• 653-two-sum-iv-input-is-a-bst
• 658-find-k-closest-elements
• 661-image-smoother
• 665-non-decreasing-array
• 668-kth-smallest-number-in-multiplication-table
• 669-trim-a-binary-search-tree
• 67-add-binary
• 68-text-justification
• 680-valid-palindrome-ii
• 682-baseball-game
• 69-sqrtx
• 692-top-k-frequent-words
• 695-max-area-of-island
• 697-degree-of-an-array
• 7-reverse-integer
• 700-search-in-a-binary-search-tree
• 701-insert-into-a-binary-search-tree
• 703-kth-largest-element-in-a-stream
• 705-design-hashset
• 706-design-hashmap
• 707-design-linked-list
• 719-find-k-th-smallest-pair-distance
• 720-longest-word-in-dictionary
• 733-flood-fill
• 743-network-delay-time
• 745-prefix-and-suffix-search
• 746-min-cost-climbing-stairs
• 78-subsets
• 785-is-graph-bipartite
• 792-number-of-matching-subsequences
• 8-string-to-integer-atoi
• 80-remove-duplicates-from-sorted-array-ii
• 820-short-encoding-of-words
• 823-binary-trees-with-factors
• 84-largest-rectangle-in-histogram
• 844-backspace-string-compare
• 849-maximize-distance-to-closest-person
• 86-partition-list
• 863-all-nodes-distance-k-in-binary-tree
• 867-transpose-matrix
• 875-koko-eating-bananas
• 88-merge-sorted-array
• 890-find-and-replace-pattern
• 897-increasing-order-search-tree
• 9-palindrome-number
• 905-sort-array-by-parity
• 907-sum-of-subarray-minimums
• 91-decode-ways
• 916-word-subsets
• 92-reverse-linked-list-ii
• 923-3sum-with-multiplicity
• 93-restore-ip-addresses
• 941-valid-mountain-array
• 95-unique-binary-search-trees-ii
• 968-binary-tree-cameras
• 97-interleaving-string
• 979-distribute-coins-in-binary-tree
• 98-validate-binary-search-tree
• 981-time-based-key-value-store
• 99-recover-binary-search-tree
• 992-subarrays-with-k-different-integers
• 994-rotting-oranges
• basic-calculator-ii
• burst-balloons
• consecutive-characters
• course-schedule-ii
• decode-string
• distinct-subsequences
• fibonacci-number
• find-all-numbers-disappeared-in-an-array
• find-the-town-judge
• height-checker
• insertion-sort-list
• k-closest-points-to-origin
• maximal-square
• maximum-depth-of-n-ary-tree
• maximum-difference-between-node-and-ancestor
• maximum-gap
• merge-intervals
• middle-of-the-linked-list
• minimum-absolute-difference
• minimum-height-trees
• nth-magical-number
• number-complement
• numbers-at-most-n-given-digit-set
• pairs-of-songs-with-total-durations-divisible-by-60
• partition-equal-subset-sum
• partition-to-k-equal-sum-subsets
• path-sum
• path-sum-ii
• path-sum-iii
• perfect-squares
• populating-next-right-pointers-in-each-node
• power-of-two
• query-kth-smallest-trimmed-number
• range-sum-of-bst
• reorder-list
• reverse-linked-list
• reverse-words-in-a-string
• serialize-and-deserialize-binary-tree
• smallest-integer-divisible-by-k
• sort-an-array
• sort-colors
• squares-of-a-sorted-array
• third-maximum-number
• two-sum
• zigzag-conversion