Directories ¶ Show internal Expand all Path Synopsis datastructure array queue sort leetcode 01guess-numbers 0utils/tree 1002find-common-characters 101symmetric-tree 10fei-bo-na-qi-shu-lie-lcof 10qing-wa-tiao-tai-jie-wen-ti-lcof 1108defanging-an-ip-address 110balanced-binary-tree 111minimum-depth-of-binary-tree 112path-sum 1137n-th-tribonacci-number 114flatten-binary-tree-to-linked-list 1189maximum-number-of-balloons 11container-with-most-water 1207unique-number-of-occurrences 125valid-palindrome 1281subtract-the-product-and-sum-of-digits-of-an-integer 128longest-consecutive-sequence 1295find-numbers-with-even-number-of-digits 1313decompress-run-length-encoded-list 1342number-of-steps-to-reduce-a-number-to-zero 136single-number 137single-number-ii 138copy-list-with-random-pointer 139word-break 13roman-to-integer 141linked-list-cycle 144binary-tree-preorder-traversal 145binary-tree-postorder-traversal 146lru-cache 147insertion-sort-list 14longest-common-prefix 150evaluate-reverse-polish-notation 151reverse-words-in-a-string 152maximum-product-subarray 155min-stack 15three-sum 16.11diving-board-lcci 16.25lru-cache-lcci 160intersection-of-two-linked-lists 167two-sum-ii-input-array-is-sorted 169majority-element 16sub-sort-lcci 16three-sum-closest 179largest-number 17letter-combinations-of-a-phone-number 189rotate-array 18four-sum 198house-robber 19remove-nth-node-from-end-of-list 1two-sum 200number-of-islands 203remove-linked-list-elements 206reverse-linked-list 20valid-parentheses 21merge-two-sorted-lists 226invert-binary-tree 230kth-smallest-element-in-a-bst 234palindrome-linked-list 235lowest-common-ancestor-of-a-binary-search-tree 237delete-node-in-a-linked-list 239sliding-window-maximum 23merge-k-sorted-lists 24fan-zhuan-lian-biao-lcof 24swap-nodes-in-pairs 25reverse-nodes-in-k-group 26remove-duplicates-from-sorted-array 27remove-element 283move-zeroes 287find-the-duplicate-number 28dui-cheng-de-er-cha-shu-lcof 29shun-shi-zhen-da-yin-ju-zhen-lcof 2add-two-numbers 300longest-increasing-subsequence 30substring-with-concatenation-of-all-words 31next-permutation 33search-in-rotated-sorted-array 344reverse-string 347top-k-frequent-elements 349intersection-of-two-arrays 34find-first-and-last-position-of-element-in-sorted-array 350intersection-of-two-arrays-ii 35search-insert-position 39combination-sum 3longest-substring-without-repeating-characters 409longest-palindrome 40zui-xiao-de-kge-shu-lcof 414third-maximum-number 434number-of-segments-in-a-string 438find-all-anagrams-in-a-string 43multiply-strings 442find-all-duplicates-in-an-array 445add-two-numbers-ii 448find-all-numbers-disappeared-in-an-array 455assign-cookies 468validate-ip-address 46permutations 47li-wu-de-zui-da-jie-zhi-lcof 491increasing-subsequences 496next-greater-element-i 4median-of-two-sorted-arrays 503next-greater-element-ii 509fibonacci-number 51shu-zu-zhong-de-ni-xu-dui-lcof 530minimum-absolute-difference-in-bst 532next-greater-element-ii 53maximum-subarray 543diameter-of-binary-tree 54er-cha-sou-suo-shu-de-di-kda-jie-dian-lcof 556next-greater-element-iii 55er-cha-shu-de-shen-du-lcof 56merge-intervals 589n-ary-tree-preorder-traversal 58length-of-last-word 58zuo-xuan-zhuan-zi-fu-chuan-lcof 599minimum-index-sum-of-two-lists 59hua-dong-chuang-kou-de-zui-da-zhi-lcof 5longest-palindromic-substring 60permutation-sequence 61rotate-list 62yuan-quan-zhong-zui-hou-sheng-xia-de-shu-zi-lcof 63gu-piao-de-zui-da-li-run-lcof 645set-mismatch 665non-decreasing-array 66plus-one 671second-minimum-node-in-a-binary-tree 673number-of-longest-increasing-subsequence 67add-binary 67ba-zi-fu-chuan-zhuan-huan-cheng-zheng-shu-lcof 68er-cha-sou-suo-shu-de-zui-jin-gong-gong-zu-xian-lcof 69sqrtx 6cong-wei-dao-tou-da-yin-lian-biao-lcof 6zigzag-conversion 70climbing-stairs 76minimum-window-substring 771jewels-and-stones 783minimum-distance-between-bst-nodes 784letter-case-permutation 7reverse-integer 804unique-morse-code-words 80remove-duplicates-from-sorted-array-ii 81search-in-rotated-sorted-array-ii 82remove-duplicates-from-sorted-list-ii 83remove-duplicates-from-sorted-list 859buddy-strings 88merge-sorted-array 8string-to-integer-atoi 92reverse-linked-list-ii 938range-sum-of-bst 94binary-tree-inorder-traversal 977squares-of-a-sorted-array 9palindrome-number Click to show internal directories. Click to hide internal directories.