62. Unique Paths A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any point in time. The robot is trying to reach the bottom-right corner of the grid (mar…

62. Unique Paths My Submissions Question Total Accepted: 75227 Total Submissions: 214539 Difficulty: Medium A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/unique-paths/description/ 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 robot can only move either…

Unique Paths A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any point in time. The robot is trying to reach the bottom-right corner of the grid (marked…

题目 https://oj.leetcode.com/problems/unique-paths/   A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below).   The robot can only move either down or right at any point in time. The robot is trying to reach the…

Difficulty:easy  More:[目录]LeetCode Java实现 Description https://leetcode.com/problems/first-unique-character-in-a-string/ Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s =…

1. A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any point in time. The robot is trying to reach the bottom-right corner of the grid (marked 'Finish' i…

题目 A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any point in time. The robot is trying to reach the bottom-right corner of the grid (marked 'Finish' i…

class Solution { public: int uniquePathsWithObstacles(vector<vector<int>>& obstacleGrid) { || obstacleGrid[].size()==) ; ].size(); ][n-]==) ; vector<vector<int> > dp(m); ;i<dp.size();++i) dp[i].resize(n); ;i<dp.size();++i…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 递归 迭代 日期 题目地址:https://leetcode.com/problems/binary-tree-paths/#/description 题目描述 Given a binary tree, return all root-to-leaf paths. Note: A leaf is a node with no children. Ex…