Java 代码

import java.util.Scanner;

public class Main
{
    public static void main(String[] args)
    {
        Scanner cin = new Scanner(System.in);

        String s = cin.nextLine();

        char[] sc = s.toCharArray();

        for (int i = 0; i < sc.length; i ++)
        {
            if (i == sc.length - 1)
                sc [i] = (char)((int)s.charAt(i) + (int)s.charAt(0));
            else
                sc [i] = (char)((int)s.charAt(i) + (int)s.charAt(i + 1));
        }
        System.out.println (String.valueOf(sc));
    }
}