static void Main(string[] args) { DLinkedList <int> list = new DLinkedList <int>(); list.AddToFront(5); list.AddToFront(3); list.AddToFront(1); list.AddToEnd(9); if (list.Search(5)) { Console.WriteLine("This linked list includes 5"); } else { Console.WriteLine("This linked list does not include 5"); } if (list.Search(13)) { Console.WriteLine("This linked list includes 13"); } else { Console.WriteLine("This linked list does not include 13"); } list.Display(); DLinkedList <int> list2 = new DLinkedList <int>(); list2.AddToOrderedList(400); list2.AddToOrderedList(40); list2.AddToOrderedList(4); list2.AddToOrderedList(450); list2.AddToOrderedList(50); //list2.Delete(50); list2.Delete(450); list2.Display(); list2.DisplayReverse(); }