[Insight-users] question about ChildTreeIterator--A bug?

[Jian Wu]

Hello,
I got unexpected results from running the example code: 
Examples/DataRepresentation/Containers/TreeContaineer.cxx
The segment of the code that demonstrates the itk::ChildTreeIterator gave 
the screen output of
0
2
3
But I expected the output should be
1
2
3
since the nodes 1,2,3 are the childern of 0 according to the tree structure. 
Is there a bug or I didn't interperate is correctly? Please help!

Regards,
Jian Wu