leetCode汇总

java-leet-code

持续更新leet-code题解

explore（30）

#	Title	Tag
001	Two Sum	Array HashTable
007	Reverse Integer	String
008	String to Integer	String Array
014	Longest Common Prefix	String Array
019	Remove Nth Node From End of List	LinkedList
021	Merge Two Sorted Lists	LinkedList
026	Remove Duplicates from Sorted Array	Array
028	Implement strStr	String Array
036	Valid Sudoku	Array HashSet
048	Rotate Image	Array
065	Plus One	Array
088	Merge Sorted Array	Array Sorted
098	Validate Binary Search Tree	Tree
101	Symmetric Tree	Tree
102	Binary Tree Level Order Traversal	Tree
104	Maximum Depth of Binary Tree	Tree
108	Convert Sorted Array to Binary Search Tree	Tree
122	Best Time to Buy and Sell Stock II	Array
125	Valid Palindrome	String Array
136	Single Number	Array
141	Linked List Cycle	LinkedList
189	Rotate Array	Array
206	Reverse a singly linked list	LinkedList
217	Contains Duplicate	Array
234	Palindrome Linked List	LinkedList
237	Delete Node in a Linked List	LinkedList
242	Valid Anagram	String Array
278	First Bad Version	Array
283	Move Zeroes	Array
344	Reverse String	String
387	First Unique Character in a String	String HashTable

easy（15）

#	Title	Tag
035	Search Insert Position	Array HashTable
069	Sqrt(x)	Binary Search
083	Remove Duplicates from Sorted List	Linked List
160	Intersection of Two Linked Lists	Linked List
167	Two Sum II - Input array is sorted	Array HashTable
203	Remove Linked List Elements	Linked List
349	Intersection of Two Arrays	HashTable BinarySearch
350	Intersection of Two Arrays II	Array Sort
367	Valid Perfect Square	Binary Search
374	Guess Number Higher or Lower	Binary Search
441	Arranging Coins	Math
530	Minimum Absolute Difference in BST	Tree
744	Find Smallest Letter Greater Than Target	Array HashTable
783	Minimum Distance Between BST Nodes	Tree
852	Peak Index in a Mountain Array	Binary Search

medium（7）

#	Title	Tag
153	Find Minimum in Rotated Sorted Array	Binary Search
162	Find Peak Element	Binary Search
230	Kth Smallest Element in a BST	Binary Search
240	Search a 2D Matrix II
392	Is Subsequence	Two pointer
436	Find Right Interval	Hash Table
454	4Sum II	Hash Table
725	Split Linked List in Parts	Linked List
729	My Calendar I	Tree
731	My Calendar II	Tree

hard（1）

#	Title	Tag
732	My Calendar III	Tree

项目源码，欢迎star：https://github.com/mcrwayfun/java-leet-code