public void RemoveAt(int index)
{
if (index > this.Count)
{
throw new InvalidOperationException("Insufficient elements");
}
ListEntry <T> current = _head;
if (index == 0)
{
_head = _head.Tail;
_count--;
}
ListEntry <T> previous = null;
for (int count = 0; count < index; count++)
{
previous = current;
current = current.Tail;
}
previous.Extend(current.Tail);
_count--;
}
public void Add(T item)
{
var listEntry = new ListEntry <T>(item);
listEntry.Extend(_head);
_head = listEntry;
_count++;
}
