题解 | #数字颠倒#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int num = scanner.nextInt();

        String string = Integer.toString(num);
        char[] array = string.toCharArray();

        for (int i = array.length - 1; i >= 0; i--) {
            System.out.print(array[i]);
        }
    }
}