LeetCode

LeetCode solutions in C++ 11.

NO.	Title	Solution	Note	Difficulty	Tag
1	Two Sum	C++	Note	Easy	数组、哈希表
2	Add Two Numbers	C++	Note	Medium	链表
3	Longest Substring Without Repeating Characters	C++	Note	Medium	哈希表、双指针、Sliding Window
4	Median Of Two Sorted Arrays	C++	Note	Hard	数组、二分查找、分治算法
5	Longest Palindromic Substring	C++	Note	Medium	字符串、动态规划
6	ZigZag Conversion	C++	Note	Medium	字符串
11	Container With Most Water	C++	Note	Medium	数组、双指针
14	Longest Common Prefix	C++	Note	Easy	字符串
15	3Sum	C++	Note	Medium	数组、双指针
16	3Sum Closest	C++	Note	Medium	数组、双指针
17	Letter Combinations of a Phone Number	C++	Note	Medium	字符串、回溯算法
18	4Sum	C++	Note	Medium	数组、双指针、哈希表
19	Remove Nth Node From End of List	C++	Note	Medium	链表、双指针
20	Valid Parentheses	C++	Note	Easy	栈、字符串
21	Merge Two Sorted Lists	C++	Note	Easy	链表
23	Merge k Sorted Lists	C++	Note	Hard	堆、链表、分治算法
26	Remove Duplicates from Sorted Array	C++	Note	Easy	数组、双指针
27	Remove Element	C++	Note	Easy	数组、双指针
29	Divide Two Integers	C++	Note	Medium	数学、二分查找
30	Substring with Concatenation of All Words	C++	Note	Hard	哈希表、双指针、字符串
31	Next Permutation	C++	Note	Meidum	数组
33	Search in Rotated Sorted Array	C++	Note	Medium	数组、二分查找
34	Find First and Last Position of Element in Sorted Array	C++	Note	Medium	数组、二分查找
35	Search Insert Position	C++	Note	Easy	数组、二分查找
39	Combination Sum	C++	Note	Medium	数组、回溯算法
40	Combination Sum II	C++	Note	Medium	数组、回溯算法
46	Permutations	C++	Note	Medium	回溯算法
47	Permutations II	C++	Note	Medium	回溯算法
51	N-Queens	C++	Note	Hard	回溯算法
55	Jump Game	C++	Note	Medium	贪心算法、数组
56	Merge Intervals	C++	Note	Medium	排序、数组
57	Insert Interval	C++	Note	Hard	排序、数组
68	Text Justification	C++	Note	Hard	字符串
81	Search in Rotated Sorted Array II	C++	Note	Medium	数组、二分查找
94	Binary Tree Inorder Traversal	C++	Note	Meidum	树、栈、哈希表
95	Unique Binary Search Trees II	C++	Note	Medium	树、动态规划
96	Unique Binary Search Trees	C++	Note	Medium	树、动态规划
98	Validate Binary Search Tree	C++	Note	Medium	树、深度优先搜索
100	Same Tree	C++	Note	Easy	树、深度优先搜索
101	Symmetric Tree	C++	Note	Easy	树、深度优先搜索、广度优先搜索
102	Binary Tree Level Order Traversal	C++	Note	Medium	树、广度优先搜索
104	Maximum Depth of Binary Tree	C++	Note	Easy	树、深度优先搜索
107	Binary Tree Level Order Traversal II	C++	Note	Easy	树、广度优先搜索
108	Convert Sorted Array to Binary Search Tree	C++	Note	Easy	树、深度优先搜索
112	Path Sum	C++	Note	Easy	树、深度优先搜索
113	Path Sum II	C++	Note	Medium	树、深度优先搜索
122	Best Time to Buy and Sell Stock II	C++	Note	Easy	贪心算法、数组
141	Linked List Cycle	C++	Note	Easy	链表、双指针
142	Linked List Cycle II	C++	Note	Medium	链表、双指针
144	Binary Tree Preorder Traversal	C++	Note	Medium	栈、树
145	Binary Tree Postorder Traversal	C++	Note	Hard	栈、树
155	Min Stack	C++	Note	Easy	栈、设计
206	Reverse Linked List	C++	Note	Easy	链表
208	Implement Trie (Prefix Tree)	C++	Note	Medium	设计、字典树
215	Kth Largest Element in an Array	C++	Note	Medium	堆、分治算法
224	Basic Calculator	C++	Note	Hard	栈、数字
232	Implement Queue using Stacks	C++	Note	Easy	栈、设计
239	Sliding Window Maximum	C++	Note	Hard	堆、Sliding Window
242	Valid Anagram	C++	Note	Easy	排序、哈希表
264	Ugly Number II	C++	Note	Medium	堆、数学、动态规划
300	Longest Increasing Subsequence	C++	Note	Medium	二分查找、动态规划
346	Moving Average from Data Stream	C++	Note	Easy	队列
347	Top K Frequent Elements	C++	Note	Medium	堆、哈希表
349	Intersection of Two Arrays	C++	Note	Easy	排序、哈希表、双指针、二分查找
350	Intersection of Two Arrays II	C++	Note	Easy	排序、哈希表、双指针、二分查找
409	Longest Palindrome	C++	Note	Easy	哈希表
496	Next Greater Element I	C++	Note	Easy	栈
621	Task Scheduler	C++	Note	Medium	贪心、队列、数字
622	Design Circular Queue	C++	Note	Medium	设计、队列
682	Baseball Game	C++	Note	Easy	栈
687	Longest Univalue Path	C++	Note	Easy	树、递归
698	Partition to K Equal Sum Subsets	C++	Note	Medium	递归、动态规划
703	Kth Largest Element in a Stream	C++	Note	Easy	堆
783	Minimum Distance Between BST Nodes	C++	Note	Easy	树、递归
844	Backspace String Compare	C++	Note	Easy	栈、双指针
876	Middle of the Linked List	C++	Note	Easy	链表
922	Sort Array By Parity II	C++	Note	Easy	排序、数组
933	Number of Recent Calls	C++	Note	Easy	队列
938	Range Sum of BST	C++	Note	Easy	树、递归
1046	Last Stone Weight	C++	Note	Easy	堆、贪心算法