LCTM

Thanks

• leetcode 经典题目的解析
• LeetCode 刷题攻略
• 算法模板

Summary

	Go	Python	Rust	Java
EASY	69	78	2	5
MEDIUM	75	98	1	4
HARD	6	7	0	0
TOTAL	150	183	3	9

Problems

#	Title	Solutions	Difficulty
1	Two Sum  两数之和	Go  Java  Python  Rust	EASY
2	Add Two Numbers  两数相加	Go  Java  Python	MEDIUM
3	Longest Substring Without Repeating Characters  无重复字符的最长子串	Go  Java  Python  Rust	MEDIUM
5	Longest Palindromic Substring  最长回文子串	Go  Python	MEDIUM
7	Reverse Integer  整数反转	Go  Java  Python	EASY
14	Longest Common Prefix  最长公共前缀	Go  Python	EASY
15	3Sum  三数之和	Go  Java  Python	MEDIUM
17	Letter Combinations of a Phone Number  电话号码的字母组合	Go  Python	MEDIUM
18	4Sum  四数之和	Go  Python	MEDIUM
19	Remove Nth Node From End of List  删除链表的倒数第 N 个结点	Go  Java  Python	MEDIUM
20	Valid Parentheses  有效的括号	Go  Python  Rust	EASY
21	Merge Two Sorted Lists  合并两个有序链表	Go  Python	EASY
22	Generate Parentheses  括号生成	Python	MEDIUM
24	Swap Nodes in Pairs  两两交换链表中的节点	Go  Python	MEDIUM
26	Remove Duplicates from Sorted Array  删除有序数组中的重复项	Go  Python	EASY
27	Remove Element  移除元素	Go  Python	EASY
28	Implement strStr()  实现 strStr()	Go  Python	EASY
29	Divide Two Integers  两数相除	Python	MEDIUM
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	Python	MEDIUM
35	Search Insert Position  搜索插入位置	Go  Python	EASY
39	Combination Sum  组合总和	Go  Python	MEDIUM
40	Combination Sum II  组合总和 II	Go  Python	MEDIUM
41	First Missing Positive  缺失的第一个正数	Python	HARD
42	Trapping Rain Water  接雨水	Go  Python	HARD
45	Jump Game II  跳跃游戏 II	Go  Python	MEDIUM
46	Permutations  全排列	Go  Python	MEDIUM
47	Permutations II  全排列 II	Go  Python	MEDIUM
50	Pow(x, n)  Pow(x, n)	Python	MEDIUM
53	Maximum Subarray  最大子序和	Go  Python	EASY
55	Jump Game  跳跃游戏	Go  Python	MEDIUM
56	Merge Intervals  合并区间	Go  Python	MEDIUM
59	Spiral Matrix II  螺旋矩阵 II	Go  Python	MEDIUM
61	Rotate List  旋转链表	Go  Python	MEDIUM
62	Unique Paths  不同路径	Go  Python	MEDIUM
63	Unique Paths II  不同路径 II	Go  Python	MEDIUM
64	Minimum Path Sum  最小路径和	Python	MEDIUM
66	Plus One  加一	Go  Python	EASY
70	Climbing Stairs  爬楼梯	Go  Java  Python	EASY
76	Minimum Window Substring  最小覆盖子串	Python	HARD
77	Combinations  组合	Go  Python	MEDIUM
78	Subsets  子集	Go  Python	MEDIUM
82	Remove Duplicates from Sorted List II  删除排序链表中的重复元素 II	Go  Python	MEDIUM
83	Remove Duplicates from Sorted List  删除排序链表中的重复元素	Go  Python	EASY
84	Largest Rectangle in Histogram  柱状图中最大的矩形	Go	HARD
86	Partition List  分隔链表	Go  Python	MEDIUM
88	Merge Sorted Array  合并两个有序数组	Go  Python	EASY
90	Subsets II  子集 II	Go  Python	MEDIUM
91	Decode Ways  解码方法	Python	MEDIUM
92	Reverse Linked List II  反转链表 II	Go  Python	MEDIUM
93	Restore IP Addresses  复原 IP 地址	Go  Python	MEDIUM
95	Unique Binary Search Trees II  不同的二叉搜索树 II	Python	MEDIUM
96	Unique Binary Search Trees  不同的二叉搜索树	Go  Python	MEDIUM
98	Validate Binary Search Tree  验证二叉搜索树	Go  Python	MEDIUM
100	Same Tree  相同的树	Go  Python	EASY
101	Symmetric Tree  对称二叉树	Go  Python	EASY
102	Binary Tree Level Order Traversal  二叉树的层序遍历	Go  Python	MEDIUM
103	Binary Tree Zigzag Level Order Traversal  二叉树的锯齿形层序遍历	Go  Python	MEDIUM
104	Maximum Depth of Binary Tree  二叉树的最大深度	Go  Python	EASY
105	Construct Binary Tree from Preorder and Inorder Traversal  从前序与中序遍历序列构造二叉树	Go  Python	MEDIUM
106	Construct Binary Tree from Inorder and Postorder Traversal  从中序与后序遍历序列构造二叉树	Go  Python	MEDIUM
107	Binary Tree Level Order Traversal II  二叉树的层序遍历 II	Go  Python	MEDIUM
108	Convert Sorted Array to Binary Search Tree  将有序数组转换为二叉搜索树	Go  Python	EASY
110	Balanced Binary Tree  平衡二叉树	Go  Python	EASY
111	Minimum Depth of Binary Tree  二叉树的最小深度	Go  Python	EASY
112	Path Sum  路径总和	Go  Python	EASY
113	Path Sum II  路径总和 II	Go  Python	MEDIUM
114	Flatten Binary Tree to Linked List  二叉树展开为链表	Python	MEDIUM
116	Populating Next Right Pointers in Each Node  填充每个节点的下一个右侧节点指针	Go  Python	MEDIUM
117	Populating Next Right Pointers in Each Node II  填充每个节点的下一个右侧节点指针 II	Go  Python	MEDIUM
118	Pascal's Triangle  杨辉三角	Python	EASY
119	Pascal's Triangle II  杨辉三角 II	Python	EASY
120	Triangle  三角形最小路径和	Python	MEDIUM
121	Best Time to Buy and Sell Stock  买卖股票的最佳时机	Go  Python	EASY
122	Best Time to Buy and Sell Stock II  买卖股票的最佳时机 II	Go  Python	EASY
124	Binary Tree Maximum Path Sum  二叉树中的最大路径和	Go  Python	HARD
125	Valid Palindrome  验证回文串	Go  Python	EASY
128	Longest Consecutive Sequence  最长连续序列	Python	MEDIUM
129	Sum Root to Leaf Numbers  求根节点到叶节点数字之和	Python	MEDIUM
131	Palindrome Partitioning  分割回文串	Go  Python	MEDIUM
134	Gas Station  加油站	Go	MEDIUM
135	Candy  分发糖果	Go	HARD
136	Single Number  只出现一次的数字	Go  Python	EASY
139	Word Break  单词拆分	Python	MEDIUM
140	Word Break II  单词拆分 II	Python	HARD
141	Linked List Cycle  环形链表	Go  Python	EASY
142	Linked List Cycle II  环形链表 II	Go	MEDIUM
143	Reorder List  重排链表	Python	MEDIUM
144	Binary Tree Preorder Traversal  二叉树的前序遍历	Go  Python	EASY
145	Binary Tree Postorder Traversal  二叉树的后序遍历	Go  Python	EASY
146	LRU Cache  LRU 缓存机制	Python	MEDIUM
148	Sort List  排序链表	Go  Python	MEDIUM
150	Evaluate Reverse Polish Notation  逆波兰表达式求值	Go  Python	MEDIUM
151	Reverse Words in a String  翻转字符串里的单词	Go  Python	MEDIUM
152	Maximum Product Subarray  乘积最大子数组	Python	MEDIUM
155	Min Stack  最小栈	Go  Python	EASY
167	Two Sum II - Input array is sorted  两数之和 II - 输入有序数组	Go  Python	EASY
169	Majority Element  多数元素	Python	EASY
189	Rotate Array  旋转数组	Python	MEDIUM
198	House Robber  打家劫舍	Python	MEDIUM
199	Binary Tree Right Side View  二叉树的右视图	Go  Python	MEDIUM
200	Number of Islands  岛屿数量	Python	MEDIUM
202	Happy Number  快乐数	Go  Python	EASY
203	Remove Linked List Elements  移除链表元素	Go  Python	EASY
206	Reverse Linked List  反转链表	Go  Python	EASY
209	Minimum Size Subarray Sum  长度最小的子数组	Go  Python	MEDIUM
213	House Robber II  打家劫舍 II	Python	MEDIUM
216	Combination Sum III  组合总和 III	Go  Python	MEDIUM
217	Contains Duplicate  存在重复元素	Python	EASY
219	Contains Duplicate II  存在重复元素 II	Python	EASY
221	Maximal Square  最大正方形	Python	MEDIUM
222	Count Complete Tree Nodes  完全二叉树的节点个数	Go  Python	MEDIUM
225	Implement Stack using Queues  用队列实现栈	Go  Python	EASY
226	Invert Binary Tree  翻转二叉树	Go  Python	EASY
230	Kth Smallest Element in a BST  二叉搜索树中第K小的元素	Python	MEDIUM
232	Implement Queue using Stacks  用栈实现队列	Go  Python	EASY
234	Palindrome Linked List  回文链表	Go  Python	EASY
235	Lowest Common Ancestor of a Binary Search Tree  二叉搜索树的最近公共祖先	Go  Python	EASY
236	Lowest Common Ancestor of a Binary Tree  二叉树的最近公共祖先	Go  Python	MEDIUM
237	Delete Node in a Linked List  删除链表中的节点	Go  Python	EASY
239	Sliding Window Maximum  滑动窗口最大值	Go	HARD
242	Valid Anagram  有效的字母异位词	Go  Python	EASY
257	Binary Tree Paths  二叉树的所有路径	Go  Python	EASY
263	Ugly Number  丑数	Go  Python	EASY
279	Perfect Squares  完全平方数	Python	MEDIUM
283	Move Zeroes  移动零	Go  Python	EASY
300	Longest Increasing Subsequence  最长递增子序列	Go  Python	MEDIUM
322	Coin Change  零钱兑换	Python	MEDIUM
328	Odd Even Linked List  奇偶链表	Python	MEDIUM
343	Integer Break  整数拆分	Go  Python	MEDIUM
344	Reverse String  反转字符串	Go  Python	EASY
345	Reverse Vowels of a String  反转字符串中的元音字母	Python	EASY
347	Top K Frequent Elements  前 K 个高频元素	Go  Python	MEDIUM
349	Intersection of Two Arrays  两个数组的交集	Go  Python	EASY
350	Intersection of Two Arrays II  两个数组的交集 II	Python	EASY
376	Wiggle Subsequence  摆动序列	Go  Python	MEDIUM
383	Ransom Note  赎金信	Go  Python	EASY
389	Find the Difference  找不同	Python	EASY
392	Is Subsequence  判断子序列	Go	EASY
404	Sum of Left Leaves  左叶子之和	Go  Python	EASY
406	Queue Reconstruction by Height  根据身高重建队列	Go	MEDIUM
414	Third Maximum Number  第三大的数	Python	EASY
429	N-ary Tree Level Order Traversal  N 叉树的层序遍历	Go  Python	MEDIUM
435	Non-overlapping Intervals  无重叠区间	Go	MEDIUM
437	Path Sum III  路径总和 III	Python	MEDIUM
450	Delete Node in a BST  删除二叉搜索树中的节点	Go	MEDIUM
452	Minimum Number of Arrows to Burst Balloons  用最少数量的箭引爆气球	Go	MEDIUM
454	4Sum II  四数相加 II	Go	MEDIUM
455	Assign Cookies  分发饼干	Go  Python	EASY
459	Repeated Substring Pattern  重复的子字符串	Go	EASY
460	LFU Cache  LFU 缓存	Python	HARD
463	Island Perimeter  岛屿的周长	Python	EASY
491	Increasing Subsequences  递增子序列	Go  Python	MEDIUM
496	Next Greater Element I  下一个更大元素 I	Go  Python	EASY
501	Find Mode in Binary Search Tree  二叉搜索树中的众数	Go  Python	EASY
503	Next Greater Element II  下一个更大元素 II	Go  Python	MEDIUM
509	Fibonacci Number  斐波那契数	Go  Python	EASY
513	Find Bottom Left Tree Value  找树左下角的值	Go  Python	MEDIUM
515	Find Largest Value in Each Tree Row  在每个树行中找最大值	Go  Python	MEDIUM
516	Longest Palindromic Subsequence  最长回文子序列	Go  Python	MEDIUM
518	Coin Change 2  零钱兑换 II	Python	MEDIUM
530	Minimum Absolute Difference in BST  二叉搜索树的最小绝对差	Go	EASY
538	Convert BST to Greater Tree  把二叉搜索树转换为累加树	Go  Python	MEDIUM
541	Reverse String II  反转字符串 II	Go	EASY
543	Diameter of Binary Tree  二叉树的直径	Go	EASY
559	Maximum Depth of N-ary Tree  N 叉树的最大深度	Go  Python	EASY
563	Binary Tree Tilt  二叉树的坡度	Python	EASY
567	Permutation in String  字符串的排列	Python	MEDIUM
572	Subtree of Another Tree  另一棵树的子树	Python	EASY
575	Distribute Candies  分糖果	Python	EASY
583	Delete Operation for Two Strings  两个字符串的删除操作	Go  Python	MEDIUM
617	Merge Two Binary Trees  合并二叉树	Go  Python	EASY
637	Average of Levels in Binary Tree  二叉树的层平均值	Go  Python	EASY
639	Decode Ways II  解码方法 II	Python	HARD
647	Palindromic Substrings  回文子串	Go  Python	MEDIUM
654	Maximum Binary Tree  最大二叉树	Go  Python	MEDIUM
669	Trim a Binary Search Tree  修剪二叉搜索树	Go  Python	MEDIUM
674	Longest Continuous Increasing Subsequence  最长连续递增序列	Go	EASY
695	Max Area of Island  岛屿的最大面积	Python	MEDIUM
700	Search in a Binary Search Tree  二叉搜索树中的搜索	Go  Python	EASY
701	Insert into a Binary Search Tree  二叉搜索树中的插入操作	Go  Python	MEDIUM
704	Binary Search  二分查找	Go  Python	EASY
706	Design HashMap  设计哈希映射	Python	EASY
714	Best Time to Buy and Sell Stock with Transaction Fee  买卖股票的最佳时机含手续费	Go  Python	MEDIUM
718	Maximum Length of Repeated Subarray  最长重复子数组	Go  Python	MEDIUM
738	Monotone Increasing Digits  单调递增的数字	Go	MEDIUM
739	Daily Temperatures  每日温度	Go  Python	MEDIUM
746	Min Cost Climbing Stairs  使用最小花费爬楼梯	Go  Python	EASY
763	Partition Labels  划分字母区间	Go	MEDIUM
814	Binary Tree Pruning  二叉树剪枝	Python	MEDIUM
821	Shortest Distance to a Character  字符的最短距离	Python	EASY
860	Lemonade Change  柠檬水找零	Go	EASY
912	Sort an Array  排序数组	Python	MEDIUM
941	Valid Mountain Array  有效的山脉数组	Go  Python	EASY
968	Binary Tree Cameras  监控二叉树	Go	HARD
1005	Maximize Sum Of Array After K Negations  K 次取反后最大化的数组和	Go  Python	EASY
1015	Smallest Integer Divisible by K  可被 K 整除的最小整数	Python	MEDIUM
1019	Next Greater Node In Linked List  链表中的下一个更大节点	Python	MEDIUM
1022	Sum of Root To Leaf Binary Numbers  从根到叶的二进制数之和	Python	EASY
1035	Uncrossed Lines  不相交的线	Go	MEDIUM
1047	Remove All Adjacent Duplicates In String  删除字符串中的所有相邻重复项	Go  Python	EASY
1137	N-th Tribonacci Number  第 N 个泰波那契数	Java  Python	EASY
1143	Longest Common Subsequence  最长公共子序列	Go  Python	MEDIUM
1207	Unique Number of Occurrences  独一无二的出现次数	Go	EASY
1365	How Many Numbers Are Smaller Than the Current Number  有多少小于当前数字的数字	Go  Java  Python	EASY
1438	Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit  绝对差不超过限制的最长连续子数组	Python	MEDIUM