public void NotifyObservers()
{
if (WaitList.Count > 0)
{
Queue <Person2> temp = new Queue <Person2>();
while (WaitList.Count > 0)
{
Person2 nextInLine = WaitList.Dequeue();
if (!nextInLine.HasBook)
{
nextInLine.Update();
RemoveObserver(nextInLine);
break;
}
else
{
temp.Enqueue(nextInLine);
}
}
if (temp.Count > 0)
{
while (WaitList.Count > 0)
{
temp.Enqueue(WaitList.Dequeue());
}
WaitList = temp;
}
}
}
