static void Main(string[] args)
{
DoublyLinkedList test = new DoublyLinkedList();
test.InsertAt(0, 1);
test.InsertAt(1, 2);
test.Add(3);
Console.WriteLine("List elements:");
test.Print();
test.RemoveAt(0);
Console.WriteLine("List elements after removing element at index 0:");
test.Print();
test.InsertAt(2, 4);
Console.WriteLine("List elements after inserting an element at index 2(after the last element):");
test.Print();
Console.WriteLine("List elements after changing element data at index 1 with '5':");
test.ChangeDataAtIndex(1, 5);
test.Print();
Console.WriteLine("List elements after changing element with value '2' to '3':");
test.ChangeElementData(2, 3);
test.Print();
Console.WriteLine("List elements after removing element with value '4'");
test.Remove(4);
test.Print();
object element = test.GetElementData(1);
Console.WriteLine("Value of element at index 1:" + element);
Console.WriteLine("Index of element with value 3:{0}", test.IndexOf(3));
Console.WriteLine("List contains element with value = '5': {0}", (test.Contains(5)) ? "Yes" : "No");
Console.WriteLine("Is list empty? - {0}", (test.IsEmpty) ? "Yes" : "No");
}
