public void AddLast(T value)
{
var newElem = new DoubleLinkedListNode <T>
{
Value = value,
Prev = Last,
Next = null
};
if (First == null)
{
First = Last = newElem;
}
Last.Next = newElem;
Last = newElem;
}
public void AddFirst(T value)
{
var newElem = new DoubleLinkedListNode <T>
{
Value = value,
Prev = null,
Next = First
};
if (First != null)
{
First.Prev = newElem;
}
else
{
First = Last = newElem;
}
First = newElem;
}
