[SWEA][D1] 2058. 자릿수 더하기 Java

import java.util.Scanner;  
  
class Solution  
{  
    public static void main(String args[]) throws Exception  
    {  
  
        Scanner sc = new Scanner(System.in);  
        int N;  
        N = sc.nextInt();  
  
        int sum = 0;  
  
        while (N > 0){  
            sum = sum + (N % 10);  
            N = N / 10;  
        }  
  
        System.out.print(sum);  
  
    }  
}