static void Main(string[] args)
{
Console.WriteLine("Hello World!");
Stack s = new Stack();
DoublyLinkedList <int> linkedList = new DoublyLinkedList <int>(new int[] { 1, 2, 3, 3, 44, 4 });
Console.WriteLine("first value is {0}", linkedList.First.Value);
linkedList.AddBefore(linkedList.First, 100);
Console.WriteLine("first value is {0}", linkedList.First.Value);
Console.Read();
}
