private void SetHeadAndTail(T data)
{
var item = new ItStack <T>(data);
Head = item;
Tail = item;
Count++;
}
public void Push(T data)
{
var item = new ItStack <T>(data)
{
Previous = Head
};
Head = item;
Count++;
}
public T Pop()
{
if (Count > 0)
{
var item = Head;
Head = Head.Previous;
Count--;
return(item.Data);
}
else
{
throw new NullReferenceException();
}
}
public void Clear()
{
Head = default;
Tail = default;
Count = 0;
}
public Stack()
{
Tail = default;
Head = default;
Count = 0;
}
