static void Run() { DLinkedList node1 = new DLinkedList(1); DLinkedList node3 = node1.InsertNext(3); DLinkedList node2 = node3.InsertPrev(2); DLinkedList node5 = node3.InsertNext(5); DLinkedList node4 = node5.InsertPrev(4); node1.TraverseFront(); node5.TraverseBack(); }