A robot is located at the top-left corner of amxngrid (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 the diagram below). How many poss...
【LeetCode】62. Unique Paths Unique Paths A robot is located at the top-left corner of amxngrid (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 'Fini...
/* * @lc app=leetcode id=62 lang=javascript * * [62] Unique Paths * * https://leetcode.com/problems/unique-paths/description/ *//** * @param {number} m * @param {number} n * @return {number} */var uniquePaths = function (m, n) { const dp = Array(n).fill(1); for...
240116 leetcode第十四天 62. Unique Paths chocolatemilkway 1 人赞同了该文章 动态规划mid题 收获:了解了递归是低阶版的dp,dp在原有递归的基础上用空间换了时间,因此有些题用递归跑会超时,得用dp,比如此题。递归三步走:1.看达到什么边界条件时直接返回 2.看递归需要的参数,比如此题就是i,j,分别代表右...
62.Unique Paths A robot is located at the top-left corner of amxngrid (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 the diagram below...
func uniquePaths(m int, n int) int { // dp[j] 表示从 (0, 0) 到 (i - 1, j - 1) 的不同路径数,初始化均为 0 。 // 这里使用了一维数组 + 临时变量的优化,能将空间复杂度从 O(mn) 降到 O(n) 。 dp := make([]int, n + 1) // 为了方便后续获得 dp[1][1] 为 1 ,这...
Leetcode 62. Unique Paths Leetcode 63. 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 point in time. The robot is trying to reach the bottom-right corner of...
62. Unique Paths Medium Topics Companies There is a robot on an m x n grid. The robot is initially located at the top-left corner (i.e., grid[0][0]). The robot tries to move to the bottom-right corner (i.e., grid[m - 1][n - 1]). The robot can only move either down...
Leetcode 62. Unique Paths Leetcode 63. 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 point in time. The robot is trying to reach the bottom-right corner of...
ways = self.unique(m - 1, n) # 如果可以向上回退一步 if n >= 1: ways += self.unique(m, n - 1) return ways def uniquePaths(self, m, n): """ :type m: int :type n: int :rtype: int """ # 终点是m-1,n-1 return self.unique(m-1,n-1) ...