Scanner plain = new Scanner (System.in);
   String alpha ="abcdefghijklmnopqrstuvwxyz",plaintext;
   System.out.println ("please enter your Message :");
   plaintext = plain.nextLine().toLowerCase().replaceAll("\s+", "");
   for (int a = 0; a < plaintext.length(); a++ ){
   char z = plaintext.charAt(a);
   int y = alpha.indexOf (z);
   for   (int c=0; c<26; c++){
   if (c == y) continue;
   System.out.println (c);
    }
    }