private static void VerifySingleLinkedList()
        {
            Console.WriteLine("Single Linked List");

            var singleLinkedList = new SingleLinkedList <int>();

            singleLinkedList.AddItem(5);
            singleLinkedList.AddItem(6);
            singleLinkedList.AddItem(7);
            singleLinkedList.AddItem(8);
            singleLinkedList.AddItem(9);
            singleLinkedList.AddItem(10);

            Console.WriteLine("Added Items");

            singleLinkedList.ReadAll();

            Console.WriteLine("------");

            Console.WriteLine("Remove Item - 7");
            singleLinkedList.RemoveItem(7);
            singleLinkedList.ReadAll();

            Console.WriteLine("------");

            Console.WriteLine("Remove Item - 5");
            singleLinkedList.RemoveItem(5);
            singleLinkedList.ReadAll();

            Console.WriteLine("------");

            Console.WriteLine("Remove Item - 10");
            singleLinkedList.RemoveItem(10);
            singleLinkedList.ReadAll();

            Console.WriteLine("------");

            Console.WriteLine("Try Remove Item - 25");
            singleLinkedList.RemoveItem(25);
            singleLinkedList.ReadAll();

            Console.WriteLine("------");
            Console.ReadKey();
        }