public void insertLast(Vakje vakje)
{
Link newLink = new Link(vakje);
if (isEmpty())
{
first = newLink;
}
else
{
last.next = newLink;
newLink.previous = last;
}
last = newLink;
}
public void insertFirst(Vakje vakje)
{
Link newLink = new Link(vakje);
if (isEmpty())
{
last = newLink;
}
else
{
first.previous = newLink;
}
newLink.next = first;
first = newLink;
}
public LinkedList()
{
first = null;
last = null;
}
public LinkedList()
{
first = null;
last = null;
lengte = 0;
}