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Constructing a binary tree from its traversals
Joined: May 21, 2008
Oct 19, 2008 20:51:00
Firstly, thanks to everyone for answering my previous topics, my assignment is going really well. I'm now on part 2, and I need to construct a binary tree from its post-order and in-order traversals. The sample traversals given were:
Inorder traversal: ADHGKLMRUVTW
Postorder traversal: AHDLKGUVRWTM
Can someone please help me with the algorithm to complete this process?
Joined: Jan 01, 2007
Oct 19, 2008 23:21:00
I will give you a clue from which you can deduce the algorithm easily
[B]Inorder traversal: ADHGKLMRUVTW Postorder traversal: AHDLKGUVRWTM Notation: (Left Subtree) root (Right Subtree) Postorder traversal: AHDLKGUVRWTM <-------Traverse this way-------- Work on Inorder traversal while travesring Postorder traversal (ADHGKL) M (RUVTW) (ADHGKL) M ((RUV) T (W)) (ADHGKL) M ((R(UV)) T (W)) (ADHGKL) M ((R((U)V)) T (W)) ((ADH)G(KL)) M ((R((U)V)) T (W)) ((ADH)G(K(L))) M ((R((U)V)) T (W)) (((A)D(H))G(K(L))) M ((R((U)V)) T (W))[/B]
Thanks and Regards
Joined: May 21, 2008
Oct 20, 2008 20:00:00
Hey thanks for the reply. I can't say that your "clue" helped me very much, I already had the tree, but I should have mentioned that. But I managed to get it in the end, so thanks anyway!
Joined: Oct 13, 2005
Oct 21, 2008 01:41:00
How did you do it? Other people can learn from your example.
Did you see how Paul
cut 87% off of his electric heat bill with 82 watts of micro heaters
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