leetcode解题目录

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题目	算法	数据结构	注意事项
Clone Graph	BFS	哈希表
Word Ladder	BFS	哈希表
Word Ladder II	BFS	哈希表
Surrounded Regions	BFS	矩阵
Binary Tree Level Order Traversal	BFS|前序遍历	队列
Binary Tree Level Order Traversal II	BFS|前序遍历	队列
Binary Tree Zigzag Level Order Traversal	BFS|前序遍历	队列	每一层顺序分别对待
Implement strStr()	KMP算法	N/A
Copy List with Random Pointer	N/A	哈希表
Remove Duplicates from Sorted Array	N/A	哈希表
Remove Duplicates from Sorted Array II	N/A	哈希表
Set Matrix Zeroes	N/A	哈希表
Anagrams	N/A	哈希表
First Missing Positive	N/A	哈希表
Two Sum	N/A	双指针
Evaluate Reverse Polish Notation	N/A	堆栈
Largest Rectangle in Histogram	N/A	堆栈	记录重要位置
Minimum Window Substring	N/A	堆栈
Simplify Path	N/A	堆栈
Longest Valid Parentheses	N/A	堆栈
Valid Parentheses	N/A	堆栈	词法分析
Container With Most Water	N/A	堆栈	记录重要位置
Best Time to Buy and Sell Stock	N/A	数组
Best Time to Buy and Sell Stock II	N/A	数组
Best Time to Buy and Sell Stock III	N/A	数组
Length of Last Word	N/A	数组
Search Insert Position	N/A	数组
Search for a Range	N/A	数组
Spiral Matrix	N/A	矩阵	简化为子问题
Spiral Matrix II	N/A	矩阵	简化为子问题
LRU Cache	N/A	链表
Reorder List	N/A	链表	快慢指针&链表倒序
Linked List Cycle	N/A	链表	快慢指针
Linked List Cycle II	N/A	链表	快慢指针
Reverse Linked List II	N/A	链表
Partition List	N/A	链表
Remove Duplicates from Sorted List	N/A	链表
Remove Duplicates from Sorted List II	N/A	链表
Merge Two Sorted Lists	N/A	链表
Rotate List	N/A	链表	快慢指针
Reverse Nodes in k-Group	N/A	链表
Swap Nodes in Pairs	N/A	链表
Remove Nth Node From End of List	N/A	链表	快慢指针
Text Justification	N/A	队列
Candy	N/A	N/A	简化为子问题
Valid Palindrome	N/A	N/A	首尾指针
Plus One	N/A	N/A	模拟加法运算
Valid Number	N/A	N/A	词法分析
Add Binary	N/A	N/A	模拟加法运算
Insert Interval	N/A	N/A
Merge Intervals	N/A	N/A
Multiply Strings	N/A	N/A	模拟乘法运算
Trapping Rain Water	N/A	N/A
Valid Sudoku	递归	N/A
Roman to Integer	N/A	N/A
Integer to Roman	N/A	N/A
Palindrome Number	N/A	N/A
Reverse Integer	N/A	N/A
ZigZag Conversion	N/A	N/A
Add Two Numbers	N/A	N/A	模拟加法运算
Median of Two Sorted Arrays	N/A	N/A
String to Integer (atoi)	STL函数	N/A
Next Permutation	STL经典算法	N/A
Recover Binary Search Tree	中序遍历	二叉树
3Sum	二分查找	N/A
3Sum Closest	二分查找	N/A
4Sum	二分查找	N/A
Single Number	位运算	N/A
Single Number II	位运算	N/A
Construct Binary Tree from Preorder and Inorder Traversal	前序中序遍历	N/A
Binary Tree Preorder Traversal	前序遍历	二叉树
Flatten Binary Tree to Linked List	前序遍历	二叉树
Interleaving String	动态规划	二叉树
Unique Binary Search Trees	动态规划	二叉树
Word Break	动态规划	N/A
Word Break II	动态规划	N/A
Palindrome Partitioning	动态规划	N/A
Palindrome Partitioning II	动态规划	N/A
Triangle	动态规划	N/A
Distinct Subsequences	动态规划	N/A
Decode Ways	动态规划	N/A
Scramble String	动态规划	N/A
Maximal Rectangle	动态规划	N/A
Edit Distance	动态规划	N/A
Climbing Stairs	动态规划	N/A
Minimum Path Sum	动态规划	N/A
Unique Paths	动态规划	N/A
Unique Paths II	动态规划	N/A
Jump Game	动态规划	N/A
Jump Game II	动态规划	N/A
Maximum Subarray	动态规划	N/A
Wildcard Matching	动态规划	N/A
Substring with Concatenation of All Words	动态规划	N/A
Sort List	归并排序	链表
Merge Sorted Array	合并排序	N/A
Construct Binary Tree from Inorder and Postorder Traversal	后序中序遍历	N/A
Binary Tree Postorder Traversal	后续遍历	二叉树
Combinations	回溯	N/A
Permutation Sequence	回溯	N/A
N-Queens	回溯	N/A
N-Queens II	回溯	N/A
Permutations	回溯	N/A
Permutations II	回溯	N/A
Combination Sum	回溯	N/A
Combination Sum II	回溯	N/A
Sudoku Solver	回溯	N/A
Longest Substring Without Repeating Characters	回溯	N/A
Max Points on a Line	循环遍历	N/A	排除相同的点
Longest Common Prefix	循环遍历	N/A
Longest Palindromic Substring	循环遍历	N/A
Insertion Sort List	插入排序	链表
Rotate Image	矢量旋转与平移	N/A
Longest Consecutive Sequence	类BFS	哈希表
Search in Rotated Sorted Array	类二分查找	N/A
Search in Rotated Sorted Array II	类二分查找	N/A	特殊考虑相等数据
Sqrt(x)	类二分查找	N/A
Pow(x, n)	类二进制	N/A
Divide Two Integers	类二进制	N/A
Gas Station	类合并排序	N/A
Merge k Sorted Lists	类外排序	N/A
Sort Colors	类快速排序	N/A
Remove Element	类快速排序	N/A
Search a 2D Matrix	类杨氏矩阵	N/A
Restore IP Addresses	背包问题	N/A
Sum Root to Leaf Numbers	递归	二叉树
Binary Tree Maximum Path Sum	递归	二叉树
opulating Next Right Pointers in Each Node	递归	二叉树
Populating Next Right Pointers in Each Node II	递归	二叉树
Path Sum	递归	二叉树
Path Sum II	递归	二叉树
Maximum Depth of Binary Tree	递归	二叉树
Minimum Depth of Binary Tree	递归	二叉树
Balanced Binary Tree	递归	二叉树
Symmetric Tree	递归	二叉树
Same Tree	递归	二叉树
Validate Binary Search Tree	递归	二叉树
Unique Binary Search Trees II	递归	二叉树
Binary Tree Inorder Traversal	递归	二叉树
Pascal's Triangle	递归	N/A
Pascal's Triangle II	递归	N/A
Convert Sorted List to Binary Search Tree	递归	N/A	快慢指针&反中序遍历
Convert Sorted Array to Binary Search Tree	递归	N/A	反中序遍历
Subsets	递归	N/A
Subsets II	递归	N/A
Gray Code	循环	N/A
Word Search	递归	N/A
Count and Say	递归	N/A
Generate Parentheses	递归	N/A
Letter Combinations of a Phone Number	递归	N/A
Regular Expression Matching	递归	N/A