[백준] 5692번 : 팩토리얼 진법 - Java(자바)

https://www.acmicpc.net/problem/5692

import java.util.*;
public class Main {
    public static void main(String args[]) {
        Scanner s=new Scanner(System.in);
        for(;;){
            int a=s.nextInt();
            if(a==0) break;
            int count=1;
            int num=1;
            int sum=0;
            while(a>0){
                int n=a%10;
                sum+=n*num;
                a/=10;
                num*=++count;
            }
            System.out.println(sum);
        }
    }
}