Problem:
Sum of Numbers

Write a program which reads an integer and prints sum of its digits.

Input

The input consists of multiple datasets. For each dataset, an integer x is given in a line. The number of digits in x does not exceed 1000.

The input ends with a line including single zero. Your program should not process for this terminal symbol.

Output

For each dataset, print the sum of digits in x.

Sample Input

123
55
1000
0

Sample Output

6
10
1

Solution in JAVA (judge verdict: Accepted)

import java.util.Scanner;
import java.util.TreeSet;
import java.util.Arrays;
public class Main {
 
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        while(true){
           String x;
           x=sc.nextLine();
           if(x.equals("0"))break;
           int n=x.length();
           int ans=0;
           for(int i=0;i<n;i++){
                int dig=x.charAt(i)-'0';
                ans+=dig;
           }
           System.out.println(ans);
}
}
}