LeetCode算法高频题目汇总

序号	题目
1	Two Sum
2	Add Two Numbers
3	Longest Substring Without Repeating Characters
4	Median of Two Sorted Arrays
5	Longest Palindromic Substring
7	Reverse Integer
8	String to Integer (atoi)
9	Palindrome Number
11	Container With Most Water
12	Integer to Roman
13	Roman to Integer
14	Longest Common Prefix
15	3Sum
16	3Sum Closest
17	Letter Combinations of a Phone Number
19	Remove Nth Node From End of List
20	Valid Parentheses
21	Merge Two Sorted Lists
22	Generate Parentheses
23	Merge k Sorted Lists
24	Swap Nodes in Pairs
25	Reverse Nodes in k-Group
26	Remove Duplicates from Sorted Array
27	Remove Element
28	Implement strStr()
31	Next Permutation
32	Longest Valid Parentheses
33	Search in Rotated Sorted Array
34	Find First and Last Position of Element in Sorted Array
35	Search Insert Position
38	Count and Say
39	Combination Sum
40	Combination Sum II
41	First Missing Positive
42	Trapping Rain Water
43	Multiply Strings
45	Jump Game II
46	Permutations
47	Permutations II
48	Rotate Image
49	Group Anagrams
50	Pow(x, n)
53	Maximum Subarray
54	Spiral Matrix
55	Jump Game
56	Merge Intervals
59	Spiral Matrix II
62	Unique Paths
64	Minimum Path Sum
67	Add Binary
69	Sqrt(x)
70	Climbing Stairs
72	Edit Distance
75	Sort Colors
76	Minimum Window Substring
77	Combinations
78	Subsets
79	Word Search
83	Remove Duplicates from Sorted List
84	Largest Rectangle in Histogram
88	Merge Sorted Array
90	Subsets II
91	Decode Ways
93	Restore IP Addresses
94	Binary Tree Inorder Traversal
95	Unique Binary Search Trees II
96	Unique Binary Search Trees
98	Validate Binary Search Tree
101	Symmetric Tree
102	Binary Tree Level Order Traversal
103	Binary Tree Zigzag Level Order Traversal
104	Maximum Depth of Binary Tree
105	Construct Binary Tree from Preorder and Inorder Traversal
108	Convert Sorted Array to Binary Search Tree
109	Convert Sorted List to Binary Search Tree
110	Balanced Binary Tree
111	Minimum Depth of Binary Tree
112	Path Sum
113	Path Sum II
114	Flatten Binary Tree to Linked List
116	Populating Next Right Pointers in Each Node
121	Best Time to Buy and Sell Stock
122	Best Time to Buy and Sell Stock II
123	Best Time to Buy and Sell Stock III
124	Binary Tree Maximum Path Sum
125	Valid Palindrome
127	Word Ladder
128	Longest Consecutive Sequence
130	Surrounded Regions
131	Palindrome Partitioning
134	Gas Station
135	Candy
136	Single Number
138	Copy List with Random Pointer
139	Word Break
140	Word Break II
141	Linked List Cycle
142	Linked List Cycle II
143	Reorder List
144	Binary Tree Preorder Traversal
145	Binary Tree Postorder Traversal
148	Sort List
152	Maximum Product Subarray
153	Find Minimum in Rotated Sorted Array
154	Find Minimum in Rotated Sorted Array II
155	Min Stack
160	Intersection of Two Linked Lists
169	Majority Element
179	Largest Number
190	Reverse Bits
198	House Robber
199	Binary Tree Right Side View
200	Number of Islands
202	Happy Number
205	Isomorphic Strings
206	Reverse Linked List
207	Course Schedule
208	Implement Trie (Prefix Tree)
213	House Robber II
215	Kth Largest Element in an Array
216	Combination Sum III
221	Maximal Square
225	Implement Stack using Queues
226	Invert Binary Tree
230	Kth Smallest Element in a BST
232	Implement Queue using Stacks
234	Palindrome Linked List
235	Lowest Common Ancestor of a Binary Search Tree
236	Lowest Common Ancestor of a Binary Tree
238	Product of Array Except Self
239	Sliding Window Maximum
240	Search a 2D Matrix II
242	Valid Anagram
257	Binary Tree Paths
260	Single Number III
263	Ugly Number
264	Ugly Number II
268	Missing Number
279	Perfect Squares
283	Move Zeroes
287	Find the Duplicate Number
295	Find Median from Data Stream
297	Serialize and Deserialize Binary Tree
300	Longest Increasing Subsequence
303	Range Sum Query - Immutable
309	Best Time to Buy and Sell Stock with Cooldown
322	Coin Change
328	Odd Even Linked List
329	Longest Increasing Path in a Matrix
334	Increasing Triplet Subsequence
337	House Robber III
338	Counting Bits
343	Integer Break
344	Reverse String
347	Top K Frequent Elements
350	Intersection of Two Arrays II
376	Wiggle Subsequence
377	Combination Sum IV
378	Kth Smallest Element in a Sorted Matrix
387	First Unique Character in a String
392	Is Subsequence
394	Decode String
395	Longest Substring with At Least K Repeating Characters
404	Sum of Left Leaves
405	Convert a Number to Hexadecimal
406	Queue Reconstruction by Height
409	Longest Palindrome
413	Arithmetic Slices
416	Partition Equal Subset Sum
435	Non-overlapping Intervals
437	Path Sum III
438	Find All Anagrams in a String
445	Add Two Numbers II
448	Find All Numbers Disappeared in an Array
452	Minimum Number of Arrows to Burst Balloons
455	Assign Cookies
460	LFU Cache
461	Hamming Distance
462	Minimum Moves to Equal Array Elements II
474	Ones and Zeroes
485	Max Consecutive Ones
494	Target Sum
496	Next Greater Element I
501	Find Mode in Binary Search Tree
503	Next Greater Element II
504	Base 7
513	Find Bottom Left Tree Value
518	Coin Change 2
524	Longest Word in Dictionary through Deleting
530	Minimum Absolute Difference in BST
538	Convert BST to Greater Tree
540	Single Element in a Sorted Array
543	Diameter of Binary Tree
547	Friend Circles
557	Reverse Words in a String III
560	Subarray Sum Equals K
565	Array Nesting
566	Reshape the Matrix
572	Subtree of Another Tree
581	Shortest Unsorted Continuous Subarray
583	Delete Operation for Two Strings
605	Can Place Flowers
617	Merge Two Binary Trees
621	Task Scheduler
637	Average of Levels in Binary Tree
645	Set Mismatch
646	Maximum Length of Pair Chain
647	Palindromic Substrings
650	2 Keys Keyboard
653	Two Sum IV - Input is a BST
665	Non-decreasing Array
669	Trim a Binary Search Tree
680	Valid Palindrome II
687	Longest Univalue Path
695	Max Area of Island
697	Degree of an Array
714	Best Time to Buy and Sell Stock with Transaction Fee
725	Split Linked List in Parts
739	Daily Temperatures
746	Min Cost Climbing Stairs
763	Partition Labels
769	Max Chunks To Make Sorted
771	Jewels and Stones
876	Middle of the Linked List
889	Construct Binary Tree from Preorder and Postorder Traversal
946	Validate Stack Sequences