public void Push(object current)
{
Node temp = new Node();
temp.SetData(current);
temp.SetNext(top);
top = temp;
}
public void Enqueue(object current)
{
Node temp = new Node();
temp.SetData(current);
if (last == null)
{
first = temp;
last = first;
}
else
{
last.SetNext(temp);
}
size++;
}