ébauche palindrome

import java.util.*;
import java.io.*;
import java.math.*;

class Solution {

    public static void main(String args[])
    {
        Scanner in = new Scanner(System.in);
        String S = in.next();
        System.out.println();
        int index=0;
        String copie = S;
        while(!isPalindrome(S))
        {
            String z = "";
            S = copie;
            for(int i = index++; i >=0; i--)
            {
                z+=S.charAt(i);
            }
            S+=z;
        }
        String res = "";
        res += index;
        System.out.println(res);

    }
    public static boolean isPalindrome(String s)
    {
        for(int i = 0; i < s.length(); i++)
        {
            if( s.charAt(i) != s.charAt(s.length()-1-i))
                return false;
        }
        return true;
    }
}