换算零钱方案(java)

其实很简单,  输入总钱数, 然后用for循环嵌套,  零钱面额有几种,  就嵌套几层,  同时每种零钱的张数小于等于总钱数/面额 .   

对于有几种方案的话 ,  加一个计数器就可以了

import java.util.Scanner;
public class Main{
	public static void main(String [] args){
		Scanner in = new Scanner(System.in);
		int amount = in.nextInt();
		int count=0;
		OUT:
		for(int one = 0; one <=amount; one++){
			for(int five = 0; five <=amount/5; five++){
				for(int ten = 0; ten <=amount/10; ten++){
					for(int twenty = 0; twenty <=amount/20; twenty++){
							if(one+five*5+ten*10+twenty*20 == amount){
									count++;
									
									System.out.println(one+"张一元n"+
									five+"张五元n"+ten+"张十元n"+twenty+"张二十元n");
									//break OUT;
							}
						
					}
				}
			}
		}
		System.out.println("一共计算了"+count+"种方法!");
	}
}