1222. [S/W 문제해결 기본] 6일차 - 계산기1

import java.util.Scanner;

public class Solution {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        char[] arr ;
        for(int testcase = 1; testcase<11;testcase++) {
            
            int length = sc.nextInt();
            arr = new char[length];
            String st = sc.next();
            int sum=0;
            
            for(int i =0; i<length;i++) {
                if(i%2==0) {
                arr[i] = (char) (st.charAt(i)-48);
                }
                else {
                    arr[i] = st.charAt(i);
                }
                if(i%2==0) {
                    sum+=arr[i];
                }
            }
            
            System.out.println("#"+testcase+" "+sum);
        }
    }
}