java简单实现

import java.util.*;
public class Main {
    private static final Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) {
        var s = scanner.nextLine();
        System.out.println(s.length());
        for(int i = 0; i < s.length(); i++)
            System.out.print(s.charAt(i) + " ");
        System.out.println();
        System.out.println(new StringBuffer(s).reverse());
    }
}