Thread: How to duplicate a tree?

Hi!

How do a duplicate a tree in the shortest way? My tree is implemented using linked list.

Each node contains a value, a pointer to its next sibling, a pointer to its first child.

For an example, the tree looks like this. Do not worry about how the tree is ordered in this way, I just like to know how do I duplicate the whole thing out? My current idea is use recursive function to tranverse the nodes to duplicate each node.

Code:

Root
|
(1)--------(3)---(5)
|               |       |
(2)--(6)    (5)   (2)--(3)--(1)

Thanks for your help!