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' in t…

62. Unique Paths class Solution { public: int uniquePaths(int m, int n) { || n <= ) ; vector<vector<int> > dp(m,vector<int>(n)); dp[][] = ; ;i < m;i++) dp[i][] = ; ;i < n;i++) dp[][i] = ; ;i < m;i++){ ;j < n;j++){ dp[i][j]…

题面 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…

一.题目说明 题目62. Unique Paths,在一个m*n矩阵中,求从左上角Start到右下角Finish所有路径.其中每次只能向下.向右移动.难度是Medium! 二.我的解答 这个题目读读题目,理解后不难.定义一个dp[m][n],初始化最后一列为1,最后一行为1,然后循环计算到dp[0][0]就可以了. 代码如下: class Solution{ public: int uniquePaths(int m,int n){ vector<vector<int>> dp(m…

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' in t…

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' in t…

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' in t…

https://leetcode.com/problems/unique-paths/ 这道题,不利用动态规划基本上规模变大会运行超时,下面自己写得这段代码,直接暴力破解,只能应付小规模的情形,当23*12时就超时了: class Solution { public: // Solution():dp1(m,vector<int>(n,-1)),dp2(m,vector<int>(n,-1)){ // } int uniquePaths(int m, int n) { helper…

题目: A robot is located at the top-left corner of a m x ngrid (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…

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' in t…