public bool MoveNext()
{
if (_current == null)
{
Reset();
_current = _tree;
_enumerators.Enqueue(_current.Children().GetEnumerator());
return(true);
}
while (_enumerators.Count > 0)
{
var enumerator = _enumerators.Peek();
if (enumerator.MoveNext())
{
_current = enumerator.Current;
_enumerators.Enqueue(_current.Children().GetEnumerator());
return(true);
}
else
{
_enumerators.Dequeue();
}
}
return(false);
}
public bool MoveNext()
{
if (_current == null)
{
Reset();
_current = _tree;
return(true);
}
if (_current.LeftChild != null)
{
return(TraverseLeft());
}
if (_current.RightChild != null)
{
return(TraverseRight());
}
return(TraverseUpAndRight());
}
public void Add(T value)
{
if (LeftChild == null)
{
LeftChild = new DemoTree <T>(value);
return;
}
if (RightChild == null)
{
RightChild = new DemoTree <T>(value);
return;
}
if (LeftChild.Depth() <= RightChild.Depth())
{
LeftChild.Add(value);
return;
}
RightChild.Add(value);
}
private bool TraverseUpAndRight()
{
if (_breadcrumb.Count > 0)
{
_previous = _current;
while (true)
{
_current = _breadcrumb.Pop();
if (_previous != _current.RightChild)
{
break;
}
}
if (_current.RightChild != null)
{
_breadcrumb.Push(_current);
_current = _current.RightChild;
return(true);
}
}
return(false);
}
public void Reset()
{
_current = null;
}
private bool TraverseRight()
{
_breadcrumb.Push(_current);
_current = _current.RightChild;
return(true);
}
public DemoTreeEnumerator(DemoTree <T> tree)
{
_tree = tree;
}
public void Reset()
{
_current = null;
_enumerators.Clear();
}
public DemoTreeBreadthFirstEnumerator(DemoTree <T> tree)
{
_tree = tree;
}
