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.ArrayList;

public class Main{
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		ArrayList<String> before = new ArrayList<String>();
		String x;
		int sum = 0;
		while (true) {
			x = sc.next();
			if (x.equals("0")) {
				break;
			}
			before.add(x);
		}
		char[] c;
		for (int i = 0; i < before.size(); i++) {
			c = (before.get(i)).toCharArray();
			for (int j = 0; j < c.length; j++) {
				sum += (c[j] - '0');
			}
			System.out.println(sum);
			sum = 0;
		}
		sc.close();
	}
}