322--Coin Change比较清晰的动态规划,状态转移方程和起始状态都是比较好找到的,但需要一系列的学习才能对这类动态规划问题熟悉。我会继续上传这个问题的变式的解法。, 视频播放量 49、弹幕量 0、点赞数 2、投硬币枚数 0、收藏人数 0、转发人数 0, 视频作者 Nemesiscs, 作
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 = ...
题目地址:https://leetcode.com/problems/coin-change/description/题目描述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 ...
privateintres = Integer.MAX_VALUE; publicintcoinChange(int[] coins,intamount) { Arrays.sort(coins); coinChange(coins, amount, coins.length-1,0); returnres==Integer.MAX_VALUE ? -1: res; } // privatevoidcoinChange(int[] coins,intamount,intcur,intcount) { if(cur <0) return;// stop...
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://leetcode.cn/problems/coin-changeleetcode.cn/problem...
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题目地址:https://leetcode.com/problems/coin-change/description/ 题目描述 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 ...
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...
https://leetcode.cn/problems/coin-change-2leetcode.cn/problems/coin-change-2 之前做过一个题是零钱兑换,给定不同面额的硬币,找出最少需要多少个硬币,使得其面值等于amount。很容易找出dp状态转移方程为dp[i] = min{dp[i-coin_1], dp[i-coin_2], ... ,dp[i-coin_n]} + 1。本题跟上一题...
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 d...