백준 11720번 자바 - 숫자의 합

 

import java.util.Arrays;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int N = scanner.nextInt();
        int[] arr = new int[N];
        String S = scanner.next();
        int sum = 0;

        for (int i = 0; i < N; i++) {
            arr[i] = (int)S.charAt(i) - '0';
            sum += arr[i];
        }
        System.out.println(sum);
    }
}