static void Main(string[] args)
{
var doublyLinkedList = new DoublyLinkedList();
doublyLinkedList.AddLast(1);
doublyLinkedList.AddLast(2);
doublyLinkedList.AddLast(3);
Console.WriteLine(doublyLinkedList.Contains(2));
}
static void Main(string[] args)
{
var doublyLinkedList = new DoublyLinkedList <string>();
doublyLinkedList.AddLast("asad");
doublyLinkedList.AddLast("123124asd");
doublyLinkedList.AddLast("are1241");
Console.WriteLine(doublyLinkedList.Contains("asad"));
}