public SimpleListItem <T> GetItem(int number)
{
if ((number < 0) || (number >= Count))
{
throw new Exception("Выход за границу индекса");
}
SimpleListItem <T> current = first;
int i = 0;
while (i < number)
{
current = current.next;
i++;
}
return(current);
}
public void Add(T element)
{
var newItem = new SimpleListItem <T>(element);
this.Count++;
if (last == null)
{
first = newItem;
last = newItem;
}
else
{
last.next = newItem;
last = newItem;
}
}
public T Pop()
{
T current = default(T);
if (Count == 0)
{
return(current);
}
if (Count == 1)
{
current = first.data;
first = null;
last = null;
}
else
{
SimpleListItem <T> newLast = GetItem(Count - 2);
current = newLast.next.data;
last = newLast;
newLast.next = null;
}
Count--;
return(current);
}