leetcode 746. Min Cost Climbing Stairs(easy understanding dp solution) On a staircase, the i-th step has some non-negative cost cost[i] assigned (0 indexed). Once you pay the cost, you can either climb one or two steps. You need to find minimum cost…

On a staircase, the i-th step has some non-negative cost cost[i] assigned (0 indexed). Once you pay the cost, you can either climb one or two steps. You need to find minimum cost to reach the top of the floor, and you can either start from the step w…

70. 爬楼梯 70. Climbing Stairs 题目描述 假设你正在爬楼梯.需要 n 阶你才能到达楼顶. 每次你可以爬 1 或 2 个台阶.你有多少种不同的方法可以爬到楼顶呢? 注意: 给定 n 是一个正整数. LeetCode70. Climbing Stairs 示例 1: 输入: 2 输出: 2 解释: 有两种方法可以爬到楼顶. 1 阶 + 1 阶 2 阶 示例 2: 输入: 3 输出: 3 解释: 有三种方法可以爬到楼顶. 1 阶 + 1 阶 + 1 阶 1 阶 + 2 阶 2…

lc 746 Min Cost Climbing Stairs 746 Min Cost Climbing Stairs On a staircase, the i-th step has some non-negative cost cost[i] assigned (0 indexed). Once you pay the cost, you can either climb one or two steps. You need to find minimum cost to reach t…

1.题目 70. Climbing Stairs——Easy You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? Note: Given n will be a positive integer. Example 1:…

题目: You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? Note: Given n will be a positive integer. 题解: 爬到第n层的方法要么是从第n-1层一步上来的,要不就是从n-2层2步…

You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? 解题思路: 递归会导致超时,用动态规划即可,JAVA实现如下: public int climbStairs(int n) { if(n==1) return 1; e…

题目链接 题目要求 You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? 做这道题容易陷入的思维就是:所有step加起来的总和是n.俺这种思维去解决这个问题的话会显得很复杂. 按动态规划的思维,要爬到第n阶,可以从第n-1…

你正在爬楼梯.需要 n 步你才能到达顶部.每次你可以爬 1 或 2 个台阶.你有多少种不同的方式可以爬到楼顶呢?注意:给定 n 将是一个正整数.示例 1:输入: 2输出: 2说明: 有两种方法可以爬到顶端.1.  1 步 + 1 步2.  2 步示例 2:输入: 3输出: 3说明: 有三种方法可以爬到顶端.1.  1 步 + 1 步 + 1 步2.  1 步 + 2 步3.  2 步 + 1 步详见:https://leetcode.com/problems/climbing-stairs/de…

题目 You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? 分析 这个题目是一个计算n层阶梯情况下,走到顶端的路径种数(要求每次只能上1层或者2层阶梯). 这是一个动态规划的题目: n = 1 时 ways = 1: n…