sort((a,b)=>b-a) change(amount,0,0) return res === Infinity?-1:res // 内部调用函数类 function change(amount,count,cidx){ // base case if(amount === 0){ res = Math.min(count,res) return } if(coins.length === cidx) return let coin = coins[cidx] for(let i = Math....
return-1. Note: You may assume that you have an infinite number of each kind of coin. 思路: c[i]表示数目为i时最少需要多少个硬币。 算法: public int coinChange(int[] coins, int amount) { int c[] = new int[amount + 1]; for (int i = 1; i <= amount; i++) { int min = ...
此题虽然名字叫 Coin Change,但是不是经典的背包九讲问题。题目中 coins 的每个元素可以选取多次,且不考虑选取元素的顺序,因此这道题实际需要计算的是选取硬币的组合数。定义 dp[i] 表示金额之和等于 i 的硬币组合数,目标求 dp[amount]。初始边界条件为 dp[0] = 1,即不取任何硬币,就这一种取法,金额为 0...
Leetcode 322. Coin Change 硬币找零问题 MaRin 菜鸡一只给你一个整数数组 coins ,表示不同面额的硬币;以及一个整数 amount ,表示总金额。计算并返回可以凑成总金额所需的 最少的硬币个数 。如果没有任何一种硬币组合能组成总金额,返回 -1 。你可以认为每种硬币的数量是无限的。对应leetcode链接为: https://...
https://leetcode.com/problems/coin-change/discuss/77360/C%2B%2B-O(n*amount)-time-O(amount)-space-DP-solution https://leetcode.com/problems/coin-change/discuss/77368/*Java*-Both-iterative-and-recursive-solutions-with-explanations LeetCode All in One 题目讲解汇总(持续更新中...)...
2、使用递归的方法,不过有可能会造成memory exceed,递推关系为count(n,m,coins) = min(count(n,m-1,coins), count(n-coins[m],m,coins)); 其中count表示寻找最少change的函数,n为amount,m为coins(排好序的)的下标。 代码: 1 2 3 4 5
还有leetcode 494. Target Sum目标和 + 背包问题 + 深度优先遍历DFS + 动态规划DP + 简单的分析推导 代码如下: import java.util.Arrays; /* * 这就是一个简单的DP应用 * */ class Solution { public int coinChange(int[] coins, int amount) ...
leetcode 322 - Coin Change【FLAG高频精选面试题讲解】, 视频播放量 171、弹幕量 0、点赞数 3、投硬币枚数 0、收藏人数 2、转发人数 0, 视频作者 羽兰明月, 作者简介 ,相关视频:Deja Vu《头文字D》【Various Artists】动态鼓谱,I Hate Myseself For Loving You【Joan Je
leetcode322. Coin Change 题目要求 You are given coins of different denominations and a total amount of money amount. Write a function to compute the fewest number of coins that you need to make up that amount. If that amount of money cannot be made up by any combination of the coins, ...
Coin Change Problem 1 & 2. What is a coin change problem? There are two types in this, almost similar:- 1.) Minimum number of coins- Coin Change 1 on Leetcode 2.) Maximum number of ways- Coin Change 2 on Leetcode So, we have been given acoinsarray which consists of different de...