Finding the largest subtree in a BST

Posted by rakeshr on Stack Overflow See other posts from Stack Overflow or by rakeshr
Published on 2010-02-25T17:31:17Z Indexed on 2010/05/02 15:37 UTC
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binary-trees

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tree

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algorithm

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homework

Given a binary tree, I want to find out the largest subtree which is a BST in it.

Naive approach:

I have a naive approach in mind where I visit every node of the tree and pass this node to a isBST function. I will also keep track of the number of nodes in a sub-tree if it is a BST.

Is there a better approach than this ?

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