Java 자료구조
import java.until.Scanner;
public class 숫자의 합
public static void main(String[] args) {
Scanner sc = new scanner(system.in);
int N = sc.NextInt();
String sNum = sc.next();
char[] cNum = sNum.toCharArray();
int sum = 0;
for (int i = 0; i < cNum.lenfth;, i++) {
sum += cNum[i] - '0';
}
system.out.print(sum);
}
}