private static double[] denominations = { 0.01, 0.02, 0.05, 0.10, 0.20, 0.50, 1.00, 2.00 };

    static void GetAllChange()
    {
        Console.Clear();
        ATM.GetAllChange(ATM.GetInput(), 10, denominations.ToList(), new List<double>());
        Console.ReadKey();
    }

    static void GetSmallestChange()
    {
        Console.Clear();
        Console.WriteLine(ATM.GetSmallestChange(ATM.GetInput(), 10, denominations.Reverse().ToArray()));
        Console.ReadKey();
    }

    private static double[] denominations = { 0.01, 0.02, 0.05, 0.10, 0.20, 0.50, 1.00, 2.00 };

    static void GetAllChange()
    {
        Console.Clear();
        ATM.GetAllChange(ATM.GetInput(), 10, denominations.ToList(), new List<double>());
        Console.ReadKey();
    }

    static void GetSmallestChange()
    {
        Console.Clear();
        Console.WriteLine(ATM.GetSmallestChange(ATM.GetInput(), 10, denominations.Reverse().ToArray()));
        Console.ReadKey();
    }