2783-判断是否为两位数 字符串转数组长度的处理

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        String str = sc.nextLine();

        char[] arr = str.toCharArray();

        if(arr.length == 2){

            System.out.print(1);

        }else{

            System.out.print(0);

        }

    }

}