java算法 硬币

如果我们有面值为1元、3元和4元的硬币若干枚，
如何用最少的硬币凑够x元？
从终端输入一个整数，
输入最少要多少枚硬币凑出这个整数？

 

import java.util.Scanner;

public class Coins {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int[] coins = {1,3,4};
		int value = sc.nextInt();
		int[] answer = new int[value];
		int min = new Coins().solve(coins, value, answer);
		for(int i = value-1;i>=0;){
			System.out.println(answer[i]);
			i=i-answer[i];
		}
		System.out.println("最小数量："+min);
		
	}
	public int solve(int[] coins,int value,int[] answer){
		int[] mins = new int[value+1];  
        mins[0]=0;  
        for(int i=1;i<=value;i++) mins[i]=Integer.MAX_VALUE;  
        for(int i=1;i<=value;i++){  
            for(int j=0;j<coins.length;j++){  
                if(coins[j]<=i&&mins[i]>mins[i-coins[j]]+1){  
                    mins[i]=mins[i-coins[j]]+1;  
                    answer[i-1]=coins[j];  
                }  
            }  
        }  
        return mins[value];  
    }  
  
}