private void SetHeadItem(T data)
{
Head = new TwoWayItem <T>(data);
Head.Next = Head;
Head.Previous = Head;
Count = 1;
}
public DoubleLinkedList(T data)
{
var item = new TwoWayItem <T>(data);
Head = item;
Tail = item;
Count = 1;
}
public void Add(T data)
{
if (Count == 0)
{
SetHeadItem(data);
return;
}
var item = new TwoWayItem <T>(data);
item.Next = Head;
item.Previous = Head.Previous;
Head.Previous.Next = item;
Head.Previous = item;
Count++;
}
public void Add(T data)
{
var item = new TwoWayItem <T>(data);
if (Count == 0)
{
Head = item;
Tail = item;
Count = 1;
return;
}
Tail.Next = item;
item.Previous = Tail;
Tail = item;
Count++;
}
private void RemoveItem(TwoWayItem <T> current)
{
current.Next.Previous = current.Previous;
current.Previous.Next = current.Next;
Count--;
}