static void Main(string[] args)
{
LinkedList ll = new LinkedList();
NodeString toAdd = new NodeString("first");
ll.AddNode(toAdd);
toAdd = new NodeString("2nd");
ll.AddNode(toAdd);
toAdd = new NodeString("third");
ll.AddToBack(toAdd);
toAdd = new NodeString("4th");
ll.AddAt(2, toAdd);
toAdd = new NodeString("5th");
ll.AddAt(7, toAdd);
Console.WriteLine(ll.ToString());
ll.Delete();
ll.DeleteAt(8);
ll.DeleteFromEnd();
Console.WriteLine(ll.ToString());
Console.WriteLine("");
Console.WriteLine("======End of Program======");
}