백준 11720 / 자바

www.acmicpc.net/problem/11720

11720번: 숫자의 합

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
   
	public static void main(String[] args) throws IOException {

		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		
		int N = Integer.parseInt(br.readLine());
		String num = br.readLine(); 
		int sum =0;
		
		for(int i=0; i<N; i++) {
			sum+=Character.getNumericValue(num.charAt(i));
		}
				
		System.out.println(sum);
	}
}