- [面试题 17.09. 第 k 个数](../problems/get-kth-magic-number-lcci.md)

- [0002.add-two-numbers](../problems/2.add-two-numbers.md)
- [0003.longest-substring-without-repeating-characters](../problems/3.longest-substring-without-repeating-characters.md)
- [0005.longest-palindromic-substring](../problems/5.longest-palindromic-substring.md)
- [0011.container-with-most-water](../problems/11.container-with-most-water.md)
- [0015.3-sum](../problems/15.3sum.md)
- [0017.Letter-Combinations-of-a-Phone-Number](../problems/17.Letter-Combinations-of-a-Phone-Number.md) 🆕
- [0019. Remove Nth Node From End of List](../problems/19.removeNthNodeFromEndofList.md)
- [0022.generate-parentheses.md](../problems/22.generate-parentheses.md) 🆕
- [0024. Swap Nodes In Pairs](../problems/24.swapNodesInPairs.md)
- [0029.divide-two-integers](../problems/29.divide-two-integers.md)
- [0031.next-permutation](../problems/31.next-permutation.md)
- [0033.search-in-rotated-sorted-array](../problems/33.search-in-rotated-sorted-array.md)
- [0039.combination-sum](../problems/39.combination-sum.md)
- [0040.combination-sum-ii](../problems/40.combination-sum-ii.md)
- [0046.permutations](../problems/46.permutations.md)
- [0047.permutations-ii](../problems/47.permutations-ii.md)
- [0048.rotate-image](../problems/48.rotate-image.md)
- [0049.group-anagrams](../problems/49.group-anagrams.md)
- [0050.pow-x-n](../problems/50.pow-x-n.md) 🆕
- [0055.jump-game](../problems/55.jump-game.md)
- [0056.merge-intervals](../problems/56.merge-intervals.md)
- [0060.permutation-sequence](../problems/60.permutation-sequence.md) 🆕
- [0062.unique-paths](../problems/62.unique-paths.md) 🖊
- [0073.set-matrix-zeroes](../problems/73.set-matrix-zeroes.md)
- [0075.sort-colors](../problems/75.sort-colors.md)
- [0078.subsets](../problems/78.subsets.md)
- [0079.word-search](../problems/79.word-search-en.md)
- [0080.remove-duplicates-from-sorted-array-ii](../problems/80.remove-duplicates-from-sorted-array-ii.md) 🆕
- [0086.partition-list](../problems/86.partition-list.md)
- [0090.subsets-ii](../problems/90.subsets-ii.md)
- [0091.decode-ways](../problems/91.decode-ways.md)
- [0092.reverse-linked-list-ii](../problems/92.reverse-linked-list-ii.md) 🖊
- [0094.binary-tree-inorder-traversal](../problems/94.binary-tree-inorder-traversal.md)
- [0095.unique-binary-search-trees-ii](../problems/95.unique-binary-search-trees-ii.md) 🆕
- [0096.unique-binary-search-trees](../problems/96.unique-binary-search-trees.md) 🆕
- [0098.validate-binary-search-tree](../problems/98.validate-binary-search-tree.md)
- [0102.binary-tree-level-order-traversal](../problems/102.binary-tree-level-order-traversal.md)
- [0103.binary-tree-zigzag-level-order-traversal](../problems/103.binary-tree-zigzag-level-order-traversal.md)
- [105.Construct-Binary-Tree-from-Preorder-and-Inorder-Traversal.md](../problems/105.Construct-Binary-Tree-from-Preorder-and-Inorder-Traversal.md)
- [0113.path-sum-ii](../problems/113.path-sum-ii.md)
- [0129.sum-root-to-leaf-numbers](../problems/129.sum-root-to-leaf-numbers.md)
- [0130.surrounded-regions](../problems/130.surrounded-regions.md)
- [0131.palindrome-partitioning](../problems/131.palindrome-partitioning.md)
- [0139.word-break](../problems/139.word-break.md)
- [0144.binary-tree-preorder-traversal](../problems/144.binary-tree-preorder-traversal.md)
- [0150.evaluate-reverse-polish-notation](../problems/150.evaluate-reverse-polish-notation.md)
- [0152.maximum-product-subarray](../problems/152.maximum-product-subarray.md) 🖊
- [0199.binary-tree-right-side-view](../problems/199.binary-tree-right-side-view.md)
- [0200.number-of-islands](../problems/200.number-of-islands.md) 🆕
- [0201.bitwise-and-of-numbers-range](../problems/201.bitwise-and-of-numbers-range.md) 🖊
- [0208.implement-trie-prefix-tree](../problems/208.implement-trie-prefix-tree.md)
- [0209.minimum-size-subarray-sum](../problems/209.minimum-size-subarray-sum.md)
- [0211.add-and-search-word-data-structure-design](../problems/211.add-and-search-word-data-structure-design.md) 🆕
- [0215.kth-largest-element-in-an-array](../problems/215.kth-largest-element-in-an-array.md) 🆕
- [0221.maximal-square](../problems/221.maximal-square.md)
- [0229.majority-element-ii](../problems/229.majority-element-ii.md) 🆕
- [0230.kth-smallest-element-in-a-bst](../problems/230.kth-smallest-element-in-a-bst.md)
- [0236.lowest-common-ancestor-of-a-binary-tree](../problems/236.lowest-common-ancestor-of-a-binary-tree.md)
- [0238.product-of-array-except-self](../problems/238.product-of-array-except-self.md)
- [0240.search-a-2-d-matrix-ii](../problems/240.search-a-2-d-matrix-ii.md)
- [0279.perfect-squares](../problems/279.perfect-squares.md)
- [0309.best-time-to-buy-and-sell-stock-with-cooldown](../problems/309.best-time-to-buy-and-sell-stock-with-cooldown.md)
- [0322.coin-change](../problems/322.coin-change.md)
- [0328.odd-even-linked-list](../problems/328.odd-even-linked-list.md)
- [0334.increasing-triplet-subsequence](../problems/334.increasing-triplet-subsequence.md)
- [0337.house-robber-iii.md](../problems/337.house-robber-iii.md)
- [0343.integer-break](../problems/343.integer-break.md)🆕
- [0365.water-and-jug-problem](../problems/365.water-and-jug-problem.md)
- [0378.kth-smallest-element-in-a-sorted-matrix](../problems/378.kth-smallest-element-in-a-sorted-matrix.md)
- [0380.insert-delete-getrandom-o1](../problems/380.insert-delete-getrandom-o1.md)
- [0416.partition-equal-subset-sum](../problems/416.partition-equal-subset-sum.md)🖊
- [0445.add-two-numbers-ii](../problems/445.add-two-numbers-ii.md)
- [0454.4-sum-ii](../problems/454.4-sum-ii.md)
- [0474.ones-and-zeros](../problems/474.ones-and-zeros-en.md)
- [0494.target-sum](../problems/494.target-sum.md)
- [0516.longest-palindromic-subsequence](../problems/516.longest-palindromic-subsequence.md)
- [0518.coin-change-2](../problems/518.coin-change-2.md)
- [0547.friend-circles](../problems/547.friend-circles-en.md)
- [0560.subarray-sum-equals-k](../problems/560.subarray-sum-equals-k.md)
- [0609.find-duplicate-file-in-system](../problems/609.find-duplicate-file-in-system.md)
- [0611.valid-triangle-number](../problems/611.valid-triangle-number.md)
- [0718.maximum-length-of-repeated-subarray](../problems/718.maximum-length-of-repeated-subarray.md)
- [0754.reach-a-number.md](../problems/754.reach-a-number.md) 🆕
- [0785.is-graph-bipartite](../problems/785.is-graph-bipartite.md) 🆕
- [0820.short-encoding-of-words](../problems/820.short-encoding-of-words.md) 🖊
- [0875.koko-eating-bananas](../problems/875.koko-eating-bananas.md)
- [0877.stone-game](../problems/877.stone-game.md)
- [0886.possible-bipartition](../problems/886.possible-bipartition.md) 🆕
- [0900.rle-iterator](../problems/900.rle-iterator.md)
- [0912.sort-an-array](../problems/912.sort-an-array.md)
- [0935.knight-dialer](../problems/935.knight-dialer.md) 🆕
- [1011.capacity-to-ship-packages-within-d-days](../problems/1011.capacity-to-ship-packages-within-d-days.md)
- [1014.best-sightseeing-pair](../problems/1014.best-sightseeing-pair.md) 🆕
- [1015.smallest-integer-divisible-by-k](../problems/1015.smallest-integer-divisible-by-k.md)
- [1019.next-greater-node-in-linked-list](../problems/1019.next-greater-node-in-linked-list.md) 🆕
- [1020.number-of-enclaves](../problems/1020.number-of-enclaves.md)
- [1023.camelcase-matching](../problems/1023.camelcase-matching.md)
- [1031.maximum-sum-of-two-non-overlapping-subarrays](../problems/1031.maximum-sum-of-two-non-overlapping-subarrays.md)
- [1104.path-in-zigzag-labelled-binary-tree](../problems/1104.path-in-zigzag-labelled-binary-tree.md)
- [1131.maximum-of-absolute-value-expression](../problems/1131.maximum-of-absolute-value-expression.md)
- [1186.maximum-subarray-sum-with-one-deletion](../problems/1186.maximum-subarray-sum-with-one-deletion.md) 🆕
- [1218.longest-arithmetic-subsequence-of-given-difference](../problems/1218.longest-arithmetic-subsequence-of-given-difference.md)
- [1227.airplane-seat-assignment-probability](../problems/1227.airplane-seat-assignment-probability.md)
- [1261.find-elements-in-a-contaminated-binary-tree](../problems/1261.find-elements-in-a-contaminated-binary-tree.md)
- [1262.greatest-sum-divisible-by-three](../problems/1262.greatest-sum-divisible-by-three.md)
- [1297.maximum-number-of-occurrences-of-a-substring](../problems/1297.maximum-number-of-occurrences-of-a-substring.md)
- [1310.xor-queries-of-a-subarray](../problems/1310.xor-queries-of-a-subarray.md) 🆕
- [1334.find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance](../problems/1334.find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance.md) 🆕
- [1371.find-the-longest-substring-containing-vowels-in-even-counts](../problems/1371.find-the-longest-substring-containing-vowels-in-even-counts.md) 🆕