public List()
{
head = new ListElement();
head.num = 0;
head.next = null;
length = 0;
}
public void Insert(int value, ListElement pos)
{
ListElement temp = new ListElement();
temp.num = value;
temp.next = pos.next;
pos.next = temp;
++length;
}
public void Remove(ListElement pos)
{
ListElement temp = this.head;
if (this.head.next == null)
return;
while (temp.next == null || temp.next != pos)
{
temp = temp.next;
}
temp.next = pos.next;
--length;
}
public int Retrieve(ListElement pos)
{
return pos.num;
}
public ListElement Next(ListElement pos)
{
return pos.next;
}