Reverse Hello world C#

ReverseHW C#

//namespace names this object.
namespace blaine
{
    class helloworld
    {
        //Every program starts with a Main method.
        //Static indicates that you can access this method without having an object of your class available.
        //void indicates to the compiler that your method will not return a value to the calling method.
        static void Main()
        {
            System.Console.WriteLine(reverseString("Hello"));
            System.Console.ReadKey();
        }

        // THIS method is what they will want to see on the whiteboard if they ask you a question like this
        // this is not a datastructure question it's an algorithm question which means they just want to 
        // see the method
        static string reverseString(string original)
        {
            char[] array = original.ToCharArray();

            //create for loop
            for (int i = 0; i < (original.Length / 2); i++)
            {
                int j = original.Length - 1 - i;
                char temp = array[i];

                array[i] = array[j];
                array[j] = temp;
            }

            //return char array as string
            return new String(array);
        }
    }
}