using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var array = new [] {1,2,3,4,5};

        Console.WriteLine("My array is: [{0}]", string.Join(", ", array));

        Reverse(array);

        Console.WriteLine("My reversed array: is [{0}]", string.Join(", ", array));

    }

    public static void Reverse<T>(T[] array){

        //to do codee.

    }

}