Unique Paths 解答

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Question 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 'Fin…

Unique Paths II 解答

Question Follow up for "Unique Paths": Now consider if some obstacles are added to the grids. How many unique paths would there be? An obstacle and empty space is marked as 1 and 0 respectively in the grid. For example, There is one obstacle in…

LeetCode之“动态规划”：Minimum Path Sum && Unique Paths && Unique Paths II

之所以将这三道题放在一起,是因为这三道题非常类似. 1. Minimum Path Sum 题目链接题目要求: Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its path. Note: You can only move either down or righ…

Unique Paths I,II

题目来自于:https://leetcode.com/problems/unique-paths/ :https://leetcode.com/problems/unique-paths-ii/ 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 poi…

刷题62. Unique Paths

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…

[LeetCode] Unique Paths II 不同的路径之二

Follow up for "Unique Paths": Now consider if some obstacles are added to the grids. How many unique paths would there be? An obstacle and empty space is marked as 1 and 0 respectively in the grid. For example, There is one obstacle in the middl…

[LeetCode] Unique Paths 不同的路径

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…