public static void ExecuteOption(string myOption, Deck myDeck)
        {
            switch (myOption)
            {
            case "a":
            {
                //sort by ascending
                Console.WriteLine("\nYou chose to sort by ascending:");
                myDeck.SortAscending();
                break;
            }

            case "b":
                //shuffle randomly
                Console.WriteLine("\nYou chose to shuffle randomly:");
                myDeck.Shuffle();
                break;

            case "q":
                //shuffle randomly
                Console.WriteLine("\nYou chose to exit the program. Goodbye.");
                Environment.Exit(0);
                break;

            default:
                Console.WriteLine("\n" + myOption + " is not a valid selection.");
                break;
            }
        }