public void Test_Postorder2()
{
long[] postorder = _algo.Postorder(_testTree);
List <long> postorderList = new List <long>();
_algo.PostorderNoRecursion(_testTree, postorderList);
int i = 0;
foreach (var e in postorderList)
{
Assert.AreEqual(postorder[i++], e);
}
Assert.IsTrue(true);
}
