作者: 负雪明烛
id: fuxuemingzhu
个人博客: http://fuxuemingzhu.cn/
公众号:负雪明烛
本文关键词:刷题顺序,刷题路径,好题,top100,怎么刷题,Leetcode, 力扣,Python, C++, Java


大家好,相信很多朋友在刷题时,看到 LeetCode 的 2000 多道题目,有点手足无措,非常需要一个刷题的顺序和清单。

我整理了在 LeetCode(中文版)上点赞数前 100 的题目,这些的题目基本都在千赞以上,全部都是好题。

举个例子,1. Two Sum(两数之和)这个题目有着全站最高的点赞数:11757!!这题也是经典中的经典了,肯定要掌握的。


LeetCode top 100 liked 题目列表

下面的表格根据 Likes 数目对题目进行了排序。

题号 英文题名 中文题名 难度 likes 数 标签 中文力扣地址 英文 LeetCode 地址
1 Two Sum 两数之和 Easy 11757 数组,哈希表 https://leetcode-cn.com/problems/two-sum/ https://leetcode.com/problems/two-sum/
2 Add Two Numbers 两数相加 Medium 6524 递归,链表,数学 https://leetcode-cn.com/problems/add-two-numbers/ https://leetcode.com/problems/add-two-numbers/
3 Longest Substring Without Repeating Characters 无重复字符的最长子串 Medium 5845 哈希表,字符串,滑动窗口 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 寻找两个正序数组的中位数 Hard 4303 数组,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 最长回文子串 Medium 3896 字符串,动态规划 https://leetcode-cn.com/problems/longest-palindromic-substring/ https://leetcode.com/problems/longest-palindromic-substring/
15 3Sum 三数之和 Medium 3582 数组,双指针,排序 https://leetcode-cn.com/problems/3sum/ https://leetcode.com/problems/3sum/
53 Maximum Subarray 最大子序和 Easy 3533 数组,分治,动态规划 https://leetcode-cn.com/problems/maximum-subarray/ https://leetcode.com/problems/maximum-subarray/
7 Reverse Integer 整数反转 Easy 2970 数学 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 贪心,数组,双指针 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 栈,数组,双指针,动态规划,单调栈 https://leetcode-cn.com/problems/trapping-rain-water/ https://leetcode.com/problems/trapping-rain-water/
20 Valid Parentheses 有效的括号 Easy 2544 栈,字符串 https://leetcode-cn.com/problems/valid-parentheses/ https://leetcode.com/problems/valid-parentheses/
10 Regular Expression Matching 正则表达式匹配 Hard 2273 递归,字符串,动态规划 https://leetcode-cn.com/problems/regular-expression-matching/ https://leetcode.com/problems/regular-expression-matching/
26 Remove Duplicates from Sorted Array 删除有序数组中的重复项 Easy 2146 数组,双指针 https://leetcode-cn.com/problems/remove-duplicates-from-sorted-array/ https://leetcode.com/problems/remove-duplicates-from-sorted-array/
136 Single Number 只出现一次的数字 Easy 1958 位运算,数组 https://leetcode-cn.com/problems/single-number/ https://leetcode.com/problems/single-number/
22 Generate Parentheses 括号生成 Medium 1946 字符串,动态规划,回溯 https://leetcode-cn.com/problems/generate-parentheses/ https://leetcode.com/problems/generate-parentheses/
206 Reverse Linked List 反转链表 Easy 1886 递归,链表 https://leetcode-cn.com/problems/reverse-linked-list/ https://leetcode.com/problems/reverse-linked-list/
21 Merge Two Sorted Lists 合并两个有序链表 Easy 1832 递归,链表 https://leetcode-cn.com/problems/merge-two-sorted-lists/ https://leetcode.com/problems/merge-two-sorted-lists/
70 Climbing Stairs 爬楼梯 Easy 1791 记忆化搜索,数学,动态规划 https://leetcode-cn.com/problems/climbing-stairs/ https://leetcode.com/problems/climbing-stairs/
300 Longest Increasing Subsequence 最长递增子序列 Medium 1773 数组,二分查找,动态规划 https://leetcode-cn.com/problems/longest-increasing-subsequence/ https://leetcode.com/problems/longest-increasing-subsequence/
121 Best Time to Buy and Sell Stock 买卖股票的最佳时机 Easy 1766 数组,动态规划 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 编辑距离 Hard 1743 字符串,动态规划 https://leetcode-cn.com/problems/edit-distance/ https://leetcode.com/problems/edit-distance/
14 Longest Common Prefix 最长公共前缀 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 数组,动态规划 https://leetcode-cn.com/problems/house-robber/ https://leetcode.com/problems/house-robber/
9 Palindrome Number 回文数 Easy 1568 数学 https://leetcode-cn.com/problems/palindrome-number/ https://leetcode.com/problems/palindrome-number/
146 LRU Cache LRU 缓存机制 Medium 1544 设计,哈希表,链表,双向链表 https://leetcode-cn.com/problems/lru-cache/ https://leetcode.com/problems/lru-cache/
19 Remove Nth Node From End of List 删除链表的倒数第 N 个结点 Medium 1494 链表,双指针 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 搜索旋转排序数组 Medium 1493 数组,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 数组,回溯 https://leetcode-cn.com/problems/permutations/ https://leetcode.com/problems/permutations/
101 Symmetric Tree 对称二叉树 Easy 1483 树,深度优先搜索,广度优先搜索,二叉树 https://leetcode-cn.com/problems/symmetric-tree/ https://leetcode.com/problems/symmetric-tree/
84 Largest Rectangle in Histogram 柱状图中最大的矩形 Hard 1472 栈,数组,单调栈 https://leetcode-cn.com/problems/largest-rectangle-in-histogram/ https://leetcode.com/problems/largest-rectangle-in-histogram/
39 Combination Sum 组合总和 Medium 1466 数组,回溯 https://leetcode-cn.com/problems/combination-sum/ https://leetcode.com/problems/combination-sum/
13 Roman to Integer 罗马数字转整数 Easy 1436 哈希表,数学,字符串 https://leetcode-cn.com/problems/roman-to-integer/ https://leetcode.com/problems/roman-to-integer/
23 Merge k Sorted Lists 合并K个升序链表 Hard 1436 链表,分治,堆(优先队列),归并排序 https://leetcode-cn.com/problems/merge-k-sorted-lists/ https://leetcode.com/problems/merge-k-sorted-lists/
17 Letter Combinations of a Phone Number 电话号码的字母组合 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 零钱兑换 Medium 1414 广度优先搜索,数组,动态规划 https://leetcode-cn.com/problems/coin-change/ https://leetcode.com/problems/coin-change/
32 Longest Valid Parentheses 最长有效括号 Hard 1400 栈,字符串,动态规划 https://leetcode-cn.com/problems/longest-valid-parentheses/ https://leetcode.com/problems/longest-valid-parentheses/
287 Find the Duplicate Number 寻找重复数 Medium 1325 位运算,数组,双指针,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 买卖股票的最佳时机 II Easy 1306 贪心,数组,动态规划 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 相交链表 Easy 1302 哈希表,链表,双指针 https://leetcode-cn.com/problems/intersection-of-two-linked-lists/ https://leetcode.com/problems/intersection-of-two-linked-lists/
55 Jump Game 跳跃游戏 Medium 1292 贪心,数组,动态规划 https://leetcode-cn.com/problems/jump-game/ https://leetcode.com/problems/jump-game/
76 Minimum Window Substring 最小覆盖子串 Hard 1280 哈希表,字符串,滑动窗口 https://leetcode-cn.com/problems/minimum-window-substring/ https://leetcode.com/problems/minimum-window-substring/
200 Number of Islands 岛屿数量 Medium 1270 深度优先搜索,广度优先搜索,并查集,数组,矩阵 https://leetcode-cn.com/problems/number-of-islands/ https://leetcode.com/problems/number-of-islands/
78 Subsets 子集 Medium 1269 位运算,数组,回溯 https://leetcode-cn.com/problems/subsets/ https://leetcode.com/problems/subsets/
31 Next Permutation 下一个排列 Medium 1260 数组,双指针 https://leetcode-cn.com/problems/next-permutation/ https://leetcode.com/problems/next-permutation/
96 Unique Binary Search Trees 不同的二叉搜索树 Medium 1257 树,二叉搜索树,数学,动态规划,二叉树 https://leetcode-cn.com/problems/unique-binary-search-trees/ https://leetcode.com/problems/unique-binary-search-trees/
148 Sort List 排序链表 Medium 1248 链表,双指针,分治,排序,归并排序 https://leetcode-cn.com/problems/sort-list/ https://leetcode.com/problems/sort-list/
236 Lowest Common Ancestor of a Binary Tree 二叉树的最近公共祖先 Medium 1238 树,深度优先搜索,二叉树 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 个一组翻转链表 Hard 1230 递归,链表 https://leetcode-cn.com/problems/reverse-nodes-in-k-group/ https://leetcode.com/problems/reverse-nodes-in-k-group/
6 ZigZag Conversion Z 字形变换 Medium 1226 字符串 https://leetcode-cn.com/problems/zigzag-conversion/ https://leetcode.com/problems/zigzag-conversion/
152 Maximum Product Subarray 乘积最大子数组 Medium 1223 数组,动态规划 https://leetcode-cn.com/problems/maximum-product-subarray/ https://leetcode.com/problems/maximum-product-subarray/
215 Kth Largest Element in an Array 数组中的第K个最大元素 Medium 1211 数组,分治,快速选择,排序,堆(优先队列) 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) 字符串转换整数 (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 缺失的第一个正数 Hard 1163 数组,哈希表 https://leetcode-cn.com/problems/first-missing-positive/ https://leetcode.com/problems/first-missing-positive/
283 Move Zeroes 移动零 Easy 1162 数组,双指针 https://leetcode-cn.com/problems/move-zeroes/ https://leetcode.com/problems/move-zeroes/
141 Linked List Cycle 环形链表 Easy 1161 哈希表,链表,双指针 https://leetcode-cn.com/problems/linked-list-cycle/ https://leetcode.com/problems/linked-list-cycle/
98 Validate Binary Search Tree 验证二叉搜索树 Medium 1156 树,深度优先搜索,二叉搜索树,二叉树 https://leetcode-cn.com/problems/validate-binary-search-tree/ https://leetcode.com/problems/validate-binary-search-tree/
124 Binary Tree Maximum Path Sum 二叉树中的最大路径和 Hard 1152 树,深度优先搜索,动态规划,二叉树 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 从前序与中序遍历序列构造二叉树 Medium 1149 树,数组,哈希表,分治,二叉树 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 在排序数组中查找元素的第一个和最后一个位置 Medium 1137 数组,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 滑动窗口最大值 Hard 1114 队列,数组,滑动窗口,单调队列,堆(优先队列) https://leetcode-cn.com/problems/sliding-window-maximum/ https://leetcode.com/problems/sliding-window-maximum/
142 Linked List Cycle II 环形链表 II Medium 1097 哈希表,链表,双指针 https://leetcode-cn.com/problems/linked-list-cycle-ii/ https://leetcode.com/problems/linked-list-cycle-ii/
139 Word Break 单词拆分 Medium 1097 字典树,记忆化搜索,哈希表,字符串,动态规划 https://leetcode-cn.com/problems/word-break/ https://leetcode.com/problems/word-break/
45 Jump Game II 跳跃游戏 II Medium 1094 贪心,数组,动态规划 https://leetcode-cn.com/problems/jump-game-ii/ https://leetcode.com/problems/jump-game-ii/
169 Majority Element 多数元素 Easy 1089 数组,哈希表,分治,计数,排序 https://leetcode-cn.com/problems/majority-element/ https://leetcode.com/problems/majority-element/
234 Palindrome Linked List 回文链表 Easy 1072 栈,递归,链表,双指针 https://leetcode-cn.com/problems/palindrome-linked-list/ https://leetcode.com/problems/palindrome-linked-list/
62 Unique Paths 不同路径 Medium 1072 数学,动态规划,组合数学 https://leetcode-cn.com/problems/unique-paths/ https://leetcode.com/problems/unique-paths/
189 Rotate Array 旋转数组 Medium 1057 数组,数学,双指针 https://leetcode-cn.com/problems/rotate-array/ https://leetcode.com/problems/rotate-array/
94 Binary Tree Inorder Traversal 二叉树的中序遍历 Easy 1052 栈,树,深度优先搜索,二叉树 https://leetcode-cn.com/problems/binary-tree-inorder-traversal/ https://leetcode.com/problems/binary-tree-inorder-traversal/
56 Merge Intervals 合并区间 Medium 1051 数组,排序 https://leetcode-cn.com/problems/merge-intervals/ https://leetcode.com/problems/merge-intervals/
88 Merge Sorted Array 合并两个有序数组 Easy 1041 数组,双指针,排序 https://leetcode-cn.com/problems/merge-sorted-array/ https://leetcode.com/problems/merge-sorted-array/
560 Subarray Sum Equals K 和为K的子数组 Medium 1036 数组,哈希表,前缀和 https://leetcode-cn.com/problems/subarray-sum-equals-k/ https://leetcode.com/problems/subarray-sum-equals-k/
279 Perfect Squares 完全平方数 Medium 1035 广度优先搜索,数学,动态规划 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 数组,二分查找 https://leetcode-cn.com/problems/search-insert-position/ https://leetcode.com/problems/search-insert-position/
24 Swap Nodes in Pairs 两两交换链表中的节点 Medium 996 递归,链表 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 栈,数组,动态规划,矩阵,单调栈 https://leetcode-cn.com/problems/maximal-rectangle/ https://leetcode.com/problems/maximal-rectangle/
28 Implement strStr() 实现 strStr() Easy 982 双指针,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 反转链表 II Medium 980 链表 https://leetcode-cn.com/problems/reverse-linked-list-ii/ https://leetcode.com/problems/reverse-linked-list-ii/
155 Min Stack 最小栈 Easy 979 栈,设计 https://leetcode-cn.com/problems/min-stack/ https://leetcode.com/problems/min-stack/
79 Word Search 单词搜索 Medium 979 数组,回溯,矩阵 https://leetcode-cn.com/problems/word-search/ https://leetcode.com/problems/word-search/
27 Remove Element 移除元素 Easy 967 数组,双指针 https://leetcode-cn.com/problems/remove-element/ https://leetcode.com/problems/remove-element/
51 N-Queens N 皇后 Hard 965 数组,回溯 https://leetcode-cn.com/problems/n-queens/ https://leetcode.com/problems/n-queens/
75 Sort Colors 颜色分类 Medium 961 数组,双指针,排序 https://leetcode-cn.com/problems/sort-colors/ https://leetcode.com/problems/sort-colors/
102 Binary Tree Level Order Traversal 二叉树的层序遍历 Medium 960 树,广度优先搜索,二叉树 https://leetcode-cn.com/problems/binary-tree-level-order-traversal/ https://leetcode.com/problems/binary-tree-level-order-traversal/
48 Rotate Image 旋转图像 Medium 960 数组,数学,矩阵 https://leetcode-cn.com/problems/rotate-image/ https://leetcode.com/problems/rotate-image/
95 Unique Binary Search Trees II 不同的二叉搜索树 II Medium 955 树,二叉搜索树,动态规划,回溯,二叉树 https://leetcode-cn.com/problems/unique-binary-search-trees-ii/ https://leetcode.com/problems/unique-binary-search-trees-ii/
64 Minimum Path Sum 最小路径和 Medium 954 数组,动态规划,矩阵 https://leetcode-cn.com/problems/minimum-path-sum/ https://leetcode.com/problems/minimum-path-sum/
406 Queue Reconstruction by Height 根据身高重建队列 Medium 947 贪心,数组,排序 https://leetcode-cn.com/problems/queue-reconstruction-by-height/ https://leetcode.com/problems/queue-reconstruction-by-height/
226 Invert Binary Tree 翻转二叉树 Easy 941 树,深度优先搜索,广度优先搜索,二叉树 https://leetcode-cn.com/problems/invert-binary-tree/ https://leetcode.com/problems/invert-binary-tree/
437 Path Sum III 路径总和 III Medium 937 树,深度优先搜索,二叉树 https://leetcode-cn.com/problems/path-sum-iii/ https://leetcode.com/problems/path-sum-iii/
104 Maximum Depth of Binary Tree 二叉树的最大深度 Easy 937 树,深度优先搜索,广度优先搜索,二叉树 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 删除链表中的节点 Easy 936 链表 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 树,深度优先搜索,动态规划,二叉树 https://leetcode-cn.com/problems/house-robber-iii/ https://leetcode.com/problems/house-robber-iii/
18 4Sum 四数之和 Medium 918 数组,双指针,排序 https://leetcode-cn.com/problems/4sum/ https://leetcode.com/problems/4sum/
91 Decode Ways 解码方法 Medium 904 字符串,动态规划 https://leetcode-cn.com/problems/decode-ways/ https://leetcode.com/problems/decode-ways/
207 Course Schedule 课程表 Medium 897 深度优先搜索,广度优先搜索,图,拓扑排序 https://leetcode-cn.com/problems/course-schedule/ https://leetcode.com/problems/course-schedule/
37 Sudoku Solver 解数独 Hard 897 数组,回溯,矩阵 https://leetcode-cn.com/problems/sudoku-solver/ https://leetcode.com/problems/sudoku-solver/
175 Combine Two Tables 组合两个表 Easy 891 数据库 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 数组,动态规划 https://leetcode-cn.com/problems/partition-equal-subset-sum/ https://leetcode.com/problems/partition-equal-subset-sum/
238 Product of Array Except Self 除自身以外数组的乘积 Medium 885 数组,前缀和 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 二叉树展开为链表 Medium 877 栈,树,深度优先搜索,链表,二叉树 https://leetcode-cn.com/problems/flatten-binary-tree-to-linked-list/ https://leetcode.com/problems/flatten-binary-tree-to-linked-list/

2021 年 8 月 8 日于北京

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