public void Delete_First_Node()
{
if(first!=last) {
Node temp = first;
first = first.next;
first.previous = null;
temp.Dispose();
length--;
}
}
public void Add_Node(int number)
{
if(last == null)
{
Node nd = new Node(number);
last = nd;
last.next = null;
last.previous = null;
first = last;
}
else
{
Node nd = new Node(number);
last.next = nd;
nd.previous = last;
nd.next = null;
last = nd;
}
length++;
}
public Node(int number)
{
value = number;
previous = null;
next = null;
}