题解 | #数字颠倒#

import java.util.*; public class test2 { public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in); int next = scanner.nextInt();
        String s = String.valueOf(next);
        StringBuilder stringBuilder = new StringBuilder(); for (int length = s.length()-1; length >= 0; length--) {
            stringBuilder.append(s.charAt(length));
        }
        System.out.println(stringBuilder.toString());
    }
}