@dave what if the k= root->left + right most leaf ? how ur algo works on it?
On Sat, Jul 16, 2011 at 9:28 PM, Dave <[email protected]> wrote: > @Noobcoder: To do it in O(n) without destroying the BST, do two > inorder traversals simultaneously, one in the normal forward (left > subtree first) direction and one in the reverse direction (right > subtree first). Let the two current nodes have value F and R > respectively. If F + R = K, return success. If F = R, return failure. > If F + R < K, advance the forward traversal. Otherwise (F + R > K), > advance the reverse traversal. To do the traversals simultaneously, > you will have to use explicit stacks instead of recursion. > > Dave > > On Jul 16, 9:01 am, noobcoder <[email protected]> wrote: > > Given a BST containing integers, and a value K. You have to find two > > nodes that give sum = K. > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/algogeeks?hl=en. > > -- **Regards SAGAR PAREEK COMPUTER SCIENCE AND ENGINEERING NIT ALLAHABAD -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
