LeetCode Top 100 Liked 點贊最高的 100 道算法題

做者： 負雪明燭
  

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你們好，相信不少朋友在刷題時，看到 LeetCode 的 2000 多道題目，有點手足無措，很是須要一個刷題的順序和清單。

我整理了在 LeetCode（中文版）上點贊數前 100 的題目，這些的題目基本都在千贊以上，所有都是好題。

舉個例子，1. Two Sum（兩數之和）這個題目有着全站最高的點贊數：11757！！這題也是經典中的經典了，確定要掌握的。

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LeetCode top 100 liked 題目列表

下面的表格根據 Likes 數目對題目進行了排序。

題號	英文題名	中文題名	難度	likes 數	標籤	中文力扣地址	英文 LeetCode 地址
1	Two Sum	兩數之和	Easy	11757	數組,哈希表	https://leetcode-cn.com/problems/two-sum/	https://leetcode.com/problems/two-sum/
2	Add Two Numbers	兩數相加	Medium	6524	遞歸,鏈表,數學	https://leetcode-cn.com/problems/add-two-numbers/	https://leetcode.com/problems/add-two-numbers/
3	Longest Substring Without Repeating Characters	無重複字符的最長子串	Medium	5845	哈希表,字符串,滑動窗口	https://leetcode-cn.com/problems/longest-substring-without-repeating-characters/	https://leetcode.com/problems/longest-substring-without-repeating-characters/
4	Median of Two Sorted Arrays	尋找兩個正序數組的中位數	Hard	4303	數組,二分查找,分治	https://leetcode-cn.com/problems/median-of-two-sorted-arrays/	https://leetcode.com/problems/median-of-two-sorted-arrays/
5	Longest Palindromic Substring	最長迴文子串	Medium	3896	字符串,動態規劃	https://leetcode-cn.com/problems/longest-palindromic-substring/	https://leetcode.com/problems/longest-palindromic-substring/
15	3Sum	三數之和	Medium	3582	數組,雙指針,排序	https://leetcode-cn.com/problems/3sum/	https://leetcode.com/problems/3sum/
53	Maximum Subarray	最大子序和	Easy	3533	數組,分治,動態規劃	https://leetcode-cn.com/problems/maximum-subarray/	https://leetcode.com/problems/maximum-subarray/
7	Reverse Integer	整數反轉	Easy	2970	數學	https://leetcode-cn.com/problems/reverse-integer/	https://leetcode.com/problems/reverse-integer/
11	Container With Most Water	盛最多水的容器	Medium	2659	貪心,數組,雙指針	https://leetcode-cn.com/problems/container-with-most-water/	https://leetcode.com/problems/container-with-most-water/
42	Trapping Rain Water	接雨水	Hard	2552	棧,數組,雙指針,動態規劃,單調棧	https://leetcode-cn.com/problems/trapping-rain-water/	https://leetcode.com/problems/trapping-rain-water/
20	Valid Parentheses	有效的括號	Easy	2544	棧,字符串	https://leetcode-cn.com/problems/valid-parentheses/	https://leetcode.com/problems/valid-parentheses/
10	Regular Expression Matching	正則表達式匹配	Hard	2273	遞歸,字符串,動態規劃	https://leetcode-cn.com/problems/regular-expression-matching/	https://leetcode.com/problems/regular-expression-matching/
26	Remove Duplicates from Sorted Array	刪除有序數組中的重複項	Easy	2146	數組,雙指針	https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array/	https://leetcode.com/problems/remove-duplicates-from-sorted-array/
136	Single Number	只出現一次的數字	Easy	1958	位運算,數組	https://leetcode-cn.com/problems/single-number/	https://leetcode.com/problems/single-number/
22	Generate Parentheses	括號生成	Medium	1946	字符串,動態規劃,回溯	https://leetcode-cn.com/problems/generate-parentheses/	https://leetcode.com/problems/generate-parentheses/
206	Reverse Linked List	反轉鏈表	Easy	1886	遞歸,鏈表	https://leetcode-cn.com/problems/reverse-linked-list/	https://leetcode.com/problems/reverse-linked-list/
21	Merge Two Sorted Lists	合併兩個有序鏈表	Easy	1832	遞歸,鏈表	https://leetcode-cn.com/problems/merge-two-sorted-lists/	https://leetcode.com/problems/merge-two-sorted-lists/
70	Climbing Stairs	爬樓梯	Easy	1791	記憶化搜索,數學,動態規劃	https://leetcode-cn.com/problems/climbing-stairs/	https://leetcode.com/problems/climbing-stairs/
300	Longest Increasing Subsequence	最長遞增子序列	Medium	1773	數組,二分查找,動態規劃	https://leetcode-cn.com/problems/longest-increasing-subsequence/	https://leetcode.com/problems/longest-increasing-subsequence/
121	Best Time to Buy and Sell Stock	買賣股票的最佳時機	Easy	1766	數組,動態規劃	https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock/	https://leetcode.com/problems/best-time-to-buy-and-sell-stock/
72	Edit Distance	編輯距離	Hard	1743	字符串,動態規劃	https://leetcode-cn.com/problems/edit-distance/	https://leetcode.com/problems/edit-distance/
14	Longest Common Prefix	最長公共前綴	Easy	1707	字符串	https://leetcode-cn.com/problems/longest-common-prefix/	https://leetcode.com/problems/longest-common-prefix/
198	House Robber	打家劫舍	Medium	1585	數組,動態規劃	https://leetcode-cn.com/problems/house-robber/	https://leetcode.com/problems/house-robber/
9	Palindrome Number	迴文數	Easy	1568	數學	https://leetcode-cn.com/problems/palindrome-number/	https://leetcode.com/problems/palindrome-number/
146	LRU Cache	LRU 緩存機制	Medium	1544	設計,哈希表,鏈表,雙向鏈表	https://leetcode-cn.com/problems/lru-cache/	https://leetcode.com/problems/lru-cache/
19	Remove Nth Node From End of List	刪除鏈表的倒數第 N 個結點	Medium	1494	鏈表,雙指針	https://leetcode-cn.com/problems/remove-nth-node-from-end-of-list/	https://leetcode.com/problems/remove-nth-node-from-end-of-list/
33	Search in Rotated Sorted Array	搜索旋轉排序數組	Medium	1493	數組,二分查找	https://leetcode-cn.com/problems/search-in-rotated-sorted-array/	https://leetcode.com/problems/search-in-rotated-sorted-array/
46	Permutations	全排列	Medium	1484	數組,回溯	https://leetcode-cn.com/problems/permutations/	https://leetcode.com/problems/permutations/
101	Symmetric Tree	對稱二叉樹	Easy	1483	樹,深度優先搜索,廣度優先搜索,二叉樹	https://leetcode-cn.com/problems/symmetric-tree/	https://leetcode.com/problems/symmetric-tree/
84	Largest Rectangle in Histogram	柱狀圖中最大的矩形	Hard	1472	棧,數組,單調棧	https://leetcode-cn.com/problems/largest-rectangle-in-histogram/	https://leetcode.com/problems/largest-rectangle-in-histogram/
39	Combination Sum	組合總和	Medium	1466	數組,回溯	https://leetcode-cn.com/problems/combination-sum/	https://leetcode.com/problems/combination-sum/
13	Roman to Integer	羅馬數字轉整數	Easy	1436	哈希表,數學,字符串	https://leetcode-cn.com/problems/roman-to-integer/	https://leetcode.com/problems/roman-to-integer/
23	Merge k Sorted Lists	合併K個升序鏈表	Hard	1436	鏈表,分治,堆（優先隊列）,歸併排序	https://leetcode-cn.com/problems/merge-k-sorted-lists/	https://leetcode.com/problems/merge-k-sorted-lists/
17	Letter Combinations of a Phone Number	電話號碼的字母組合	Medium	1436	哈希表,字符串,回溯	https://leetcode-cn.com/problems/letter-combinations-of-a-phone-number/	https://leetcode.com/problems/letter-combinations-of-a-phone-number/
322	Coin Change	零錢兌換	Medium	1414	廣度優先搜索,數組,動態規劃	https://leetcode-cn.com/problems/coin-change/	https://leetcode.com/problems/coin-change/
32	Longest Valid Parentheses	最長有效括號	Hard	1400	棧,字符串,動態規劃	https://leetcode-cn.com/problems/longest-valid-parentheses/	https://leetcode.com/problems/longest-valid-parentheses/
287	Find the Duplicate Number	尋找重複數	Medium	1325	位運算,數組,雙指針,二分查找	https://leetcode-cn.com/problems/find-the-duplicate-number/	https://leetcode.com/problems/find-the-duplicate-number/
122	Best Time to Buy and Sell Stock II	買賣股票的最佳時機 II	Easy	1306	貪心,數組,動態規劃	https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock-ii/	https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii/
160	Intersection of Two Linked Lists	相交鏈表	Easy	1302	哈希表,鏈表,雙指針	https://leetcode-cn.com/problems/intersection-of-two-linked-lists/	https://leetcode.com/problems/intersection-of-two-linked-lists/
55	Jump Game	跳躍遊戲	Medium	1292	貪心,數組,動態規劃	https://leetcode-cn.com/problems/jump-game/	https://leetcode.com/problems/jump-game/
76	Minimum Window Substring	最小覆蓋子串	Hard	1280	哈希表,字符串,滑動窗口	https://leetcode-cn.com/problems/minimum-window-substring/	https://leetcode.com/problems/minimum-window-substring/
200	Number of Islands	島嶼數量	Medium	1270	深度優先搜索,廣度優先搜索,並查集,數組,矩陣	https://leetcode-cn.com/problems/number-of-islands/	https://leetcode.com/problems/number-of-islands/
78	Subsets	子集	Medium	1269	位運算,數組,回溯	https://leetcode-cn.com/problems/subsets/	https://leetcode.com/problems/subsets/
31	Next Permutation	下一個排列	Medium	1260	數組,雙指針	https://leetcode-cn.com/problems/next-permutation/	https://leetcode.com/problems/next-permutation/
96	Unique Binary Search Trees	不一樣的二叉搜索樹	Medium	1257	樹,二叉搜索樹,數學,動態規劃,二叉樹	https://leetcode-cn.com/problems/unique-binary-search-trees/	https://leetcode.com/problems/unique-binary-search-trees/
148	Sort List	排序鏈表	Medium	1248	鏈表,雙指針,分治,排序,歸併排序	https://leetcode-cn.com/problems/sort-list/	https://leetcode.com/problems/sort-list/
236	Lowest Common Ancestor of a Binary Tree	二叉樹的最近公共祖先	Medium	1238	樹,深度優先搜索,二叉樹	https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree/	https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree/
25	Reverse Nodes in k-Group	K 個一組翻轉鏈表	Hard	1230	遞歸,鏈表	https://leetcode-cn.com/problems/reverse-nodes-in-k-group/	https://leetcode.com/problems/reverse-nodes-in-k-group/
6	ZigZag Conversion	Z 字形變換	Medium	1226	字符串	https://leetcode-cn.com/problems/zigzag-conversion/	https://leetcode.com/problems/zigzag-conversion/
152	Maximum Product Subarray	乘積最大子數組	Medium	1223	數組,動態規劃	https://leetcode-cn.com/problems/maximum-product-subarray/	https://leetcode.com/problems/maximum-product-subarray/
215	Kth Largest Element in an Array	數組中的第K個最大元素	Medium	1211	數組,分治,快速選擇,排序,堆（優先隊列）	https://leetcode-cn.com/problems/kth-largest-element-in-an-array/	https://leetcode.com/problems/kth-largest-element-in-an-array/
8	String to Integer (atoi)	字符串轉換整數 (atoi)	Medium	1168	字符串	https://leetcode-cn.com/problems/string-to-integer-atoi/	https://leetcode.com/problems/string-to-integer-atoi/
41	First Missing Positive	缺失的第一個正數	Hard	1163	數組,哈希表	https://leetcode-cn.com/problems/first-missing-positive/	https://leetcode.com/problems/first-missing-positive/
283	Move Zeroes	移動零	Easy	1162	數組,雙指針	https://leetcode-cn.com/problems/move-zeroes/	https://leetcode.com/problems/move-zeroes/
141	Linked List Cycle	環形鏈表	Easy	1161	哈希表,鏈表,雙指針	https://leetcode-cn.com/problems/linked-list-cycle/	https://leetcode.com/problems/linked-list-cycle/
98	Validate Binary Search Tree	驗證二叉搜索樹	Medium	1156	樹,深度優先搜索,二叉搜索樹,二叉樹	https://leetcode-cn.com/problems/validate-binary-search-tree/	https://leetcode.com/problems/validate-binary-search-tree/
124	Binary Tree Maximum Path Sum	二叉樹中的最大路徑和	Hard	1152	樹,深度優先搜索,動態規劃,二叉樹	https://leetcode-cn.com/problems/binary-tree-maximum-path-sum/	https://leetcode.com/problems/binary-tree-maximum-path-sum/
105	Construct Binary Tree from Preorder and Inorder Traversal	從前序與中序遍歷序列構造二叉樹	Medium	1149	樹,數組,哈希表,分治,二叉樹	https://leetcode-cn.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/	https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/
34	Find First and Last Position of Element in Sorted Array	在排序數組中查找元素的第一個和最後一個位置	Medium	1137	數組,二分查找	https://leetcode-cn.com/problems/find-first-and-last-position-of-element-in-sorted-array/	https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/
239	Sliding Window Maximum	滑動窗口最大值	Hard	1114	隊列,數組,滑動窗口,單調隊列,堆（優先隊列）	https://leetcode-cn.com/problems/sliding-window-maximum/	https://leetcode.com/problems/sliding-window-maximum/
142	Linked List Cycle II	環形鏈表 II	Medium	1097	哈希表,鏈表,雙指針	https://leetcode-cn.com/problems/linked-list-cycle-ii/	https://leetcode.com/problems/linked-list-cycle-ii/
139	Word Break	單詞拆分	Medium	1097	字典樹,記憶化搜索,哈希表,字符串,動態規劃	https://leetcode-cn.com/problems/word-break/	https://leetcode.com/problems/word-break/
45	Jump Game II	跳躍遊戲 II	Medium	1094	貪心,數組,動態規劃	https://leetcode-cn.com/problems/jump-game-ii/	https://leetcode.com/problems/jump-game-ii/
169	Majority Element	多數元素	Easy	1089	數組,哈希表,分治,計數,排序	https://leetcode-cn.com/problems/majority-element/	https://leetcode.com/problems/majority-element/
234	Palindrome Linked List	迴文鏈表	Easy	1072	棧,遞歸,鏈表,雙指針	https://leetcode-cn.com/problems/palindrome-linked-list/	https://leetcode.com/problems/palindrome-linked-list/
62	Unique Paths	不一樣路徑	Medium	1072	數學,動態規劃,組合數學	https://leetcode-cn.com/problems/unique-paths/	https://leetcode.com/problems/unique-paths/
189	Rotate Array	旋轉數組	Medium	1057	數組,數學,雙指針	https://leetcode-cn.com/problems/rotate-array/	https://leetcode.com/problems/rotate-array/
94	Binary Tree Inorder Traversal	二叉樹的中序遍歷	Easy	1052	棧,樹,深度優先搜索,二叉樹	https://leetcode-cn.com/problems/binary-tree-inorder-traversal/	https://leetcode.com/problems/binary-tree-inorder-traversal/
56	Merge Intervals	合併區間	Medium	1051	數組,排序	https://leetcode-cn.com/problems/merge-intervals/	https://leetcode.com/problems/merge-intervals/
88	Merge Sorted Array	合併兩個有序數組	Easy	1041	數組,雙指針,排序	https://leetcode-cn.com/problems/merge-sorted-array/	https://leetcode.com/problems/merge-sorted-array/
560	Subarray Sum Equals K	和爲K的子數組	Medium	1036	數組,哈希表,前綴和	https://leetcode-cn.com/problems/subarray-sum-equals-k/	https://leetcode.com/problems/subarray-sum-equals-k/
279	Perfect Squares	徹底平方數	Medium	1035	廣度優先搜索,數學,動態規劃	https://leetcode-cn.com/problems/perfect-squares/	https://leetcode.com/problems/perfect-squares/
35	Search Insert Position	搜索插入位置	Easy	1005	數組,二分查找	https://leetcode-cn.com/problems/search-insert-position/	https://leetcode.com/problems/search-insert-position/
24	Swap Nodes in Pairs	兩兩交換鏈表中的節點	Medium	996	遞歸,鏈表	https://leetcode-cn.com/problems/swap-nodes-in-pairs/	https://leetcode.com/problems/swap-nodes-in-pairs/
85	Maximal Rectangle	最大矩形	Hard	983	棧,數組,動態規劃,矩陣,單調棧	https://leetcode-cn.com/problems/maximal-rectangle/	https://leetcode.com/problems/maximal-rectangle/
28	Implement strStr()	實現 strStr()	Easy	982	雙指針,字符串,字符串匹配	https://leetcode-cn.com/problems/implement-strstr/	https://leetcode.com/problems/implement-strstr/
92	Reverse Linked List II	反轉鏈表 II	Medium	980	鏈表	https://leetcode-cn.com/problems/reverse-linked-list-ii/	https://leetcode.com/problems/reverse-linked-list-ii/
155	Min Stack	最小棧	Easy	979	棧,設計	https://leetcode-cn.com/problems/min-stack/	https://leetcode.com/problems/min-stack/
79	Word Search	單詞搜索	Medium	979	數組,回溯,矩陣	https://leetcode-cn.com/problems/word-search/	https://leetcode.com/problems/word-search/
27	Remove Element	移除元素	Easy	967	數組,雙指針	https://leetcode-cn.com/problems/remove-element/	https://leetcode.com/problems/remove-element/
51	N-Queens	N 皇后	Hard	965	數組,回溯	https://leetcode-cn.com/problems/n-queens/	https://leetcode.com/problems/n-queens/
75	Sort Colors	顏色分類	Medium	961	數組,雙指針,排序	https://leetcode-cn.com/problems/sort-colors/	https://leetcode.com/problems/sort-colors/
102	Binary Tree Level Order Traversal	二叉樹的層序遍歷	Medium	960	樹,廣度優先搜索,二叉樹	https://leetcode-cn.com/problems/binary-tree-level-order-traversal/	https://leetcode.com/problems/binary-tree-level-order-traversal/
48	Rotate Image	旋轉圖像	Medium	960	數組,數學,矩陣	https://leetcode-cn.com/problems/rotate-image/	https://leetcode.com/problems/rotate-image/
95	Unique Binary Search Trees II	不一樣的二叉搜索樹 II	Medium	955	樹,二叉搜索樹,動態規劃,回溯,二叉樹	https://leetcode-cn.com/problems/unique-binary-search-trees-ii/	https://leetcode.com/problems/unique-binary-search-trees-ii/
64	Minimum Path Sum	最小路徑和	Medium	954	數組,動態規劃,矩陣	https://leetcode-cn.com/problems/minimum-path-sum/	https://leetcode.com/problems/minimum-path-sum/
406	Queue Reconstruction by Height	根據身高重建隊列	Medium	947	貪心,數組,排序	https://leetcode-cn.com/problems/queue-reconstruction-by-height/	https://leetcode.com/problems/queue-reconstruction-by-height/
226	Invert Binary Tree	翻轉二叉樹	Easy	941	樹,深度優先搜索,廣度優先搜索,二叉樹	https://leetcode-cn.com/problems/invert-binary-tree/	https://leetcode.com/problems/invert-binary-tree/
437	Path Sum III	路徑總和 III	Medium	937	樹,深度優先搜索,二叉樹	https://leetcode-cn.com/problems/path-sum-iii/	https://leetcode.com/problems/path-sum-iii/
104	Maximum Depth of Binary Tree	二叉樹的最大深度	Easy	937	樹,深度優先搜索,廣度優先搜索,二叉樹	https://leetcode-cn.com/problems/maximum-depth-of-binary-tree/	https://leetcode.com/problems/maximum-depth-of-binary-tree/
237	Delete Node in a Linked List	刪除鏈表中的節點	Easy	936	鏈表	https://leetcode-cn.com/problems/delete-node-in-a-linked-list/	https://leetcode.com/problems/delete-node-in-a-linked-list/
337	House Robber III	打家劫舍 III	Medium	929	樹,深度優先搜索,動態規劃,二叉樹	https://leetcode-cn.com/problems/house-robber-iii/	https://leetcode.com/problems/house-robber-iii/
18	4Sum	四數之和	Medium	918	數組,雙指針,排序	https://leetcode-cn.com/problems/4sum/	https://leetcode.com/problems/4sum/
91	Decode Ways	解碼方法	Medium	904	字符串,動態規劃	https://leetcode-cn.com/problems/decode-ways/	https://leetcode.com/problems/decode-ways/
207	Course Schedule	課程表	Medium	897	深度優先搜索,廣度優先搜索,圖,拓撲排序	https://leetcode-cn.com/problems/course-schedule/	https://leetcode.com/problems/course-schedule/
37	Sudoku Solver	解數獨	Hard	897	數組,回溯,矩陣	https://leetcode-cn.com/problems/sudoku-solver/	https://leetcode.com/problems/sudoku-solver/
175	Combine Two Tables	組合兩個表	Easy	891	數據庫	https://leetcode-cn.com/problems/combine-two-tables/	https://leetcode.com/problems/combine-two-tables/
416	Partition Equal Subset Sum	分割等和子集	Medium	886	數組,動態規劃	https://leetcode-cn.com/problems/partition-equal-subset-sum/	https://leetcode.com/problems/partition-equal-subset-sum/
238	Product of Array Except Self	除自身之外數組的乘積	Medium	885	數組,前綴和	https://leetcode-cn.com/problems/product-of-array-except-self/	https://leetcode.com/problems/product-of-array-except-self/
114	Flatten Binary Tree to Linked List	二叉樹展開爲鏈表	Medium	877	棧,樹,深度優先搜索,鏈表,二叉樹	https://leetcode-cn.com/problems/flatten-binary-tree-to-linked-list/	https://leetcode.com/problems/flatten-binary-tree-to-linked-list/

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2021 年 8 月 8 日於北京