using System;

public class Program

{

    private static string Backwards(string s)

    {

    char[] charArray = s.ToCharArray(); //converts a string to an array of characters.

    Array.Reverse(charArray);

    return new string(charArray);

    }

​

    public static void Main()

    {

        string notes = "abcdefghijklmnopqrstuvwsyz";

        Console.WriteLine(notes.Length);

        Console.WriteLine(notes[5]);

        foreach(char letter in notes)

            Console.Write(letter + "  ");

        string newnotes = Backwards(notes);

    }

}