[백준/Java] 11720 : 숫자의 합

import java.io.*;

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

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

        int N = Integer.parseInt( br.readLine() );
        String[] stringArr = br.readLine().split("");
        int[] intArr = new int[ stringArr.length ];

        for(int i = 0 ; i < stringArr.length ; i++){
            intArr[i] = Integer.parseInt(stringArr[i]);
        }

        int sum = 0;

        for(int j = 0 ; j < intArr.length ; j++){
            sum += intArr[j];
        }

        bw.write(String.valueOf(sum));
        bw.flush();
        bw.close();
    }
}