Surrounded Regions 题目描述 Given a 2D board containing'X'and'O', capture all regions surrounded by'X'.A region is captured …
标签：leetcode
[leetcode]题目解析（190610）
Edit distance(dynamic programing) 题目描述 Given two words word1 and word2, find the minimum number of steps required to con…
[leetcode]题目解析（190609）
Construct binary tree from preorder and inorder traversal 题目描述 Given preorder and inorder traversal of a tree, construct…
[leetcode]题目解析（190524）
valid sudoku 题目描述 Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules.The Sudoku board could be par…
[leetcode]题目解析（190513）
Search for a range 题目描述 Given a sorted array of integers, find the starting and ending position of a given target value.…
[leetcode]题目解析（190425）
Remove Duplicates from sorted Array II 题目描述 Follow up for "Remove Duplicates": What if duplicates are allowed at most tw…
[leetcode]题目解析（190423）
Remove duplicates from sorted list 题目描述 Given a sorted linked list, delete all duplicates such that each element appear …
[leetcode]题目解析（190422）
unique path 题目描述 A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below).The rob…
[Leetcode]merge sorted array
merge sorted array 题目描述 Given two sorted integer arrays A and B, merge B into A as one sorted array.Note: You may assum…