## Find the difference between sum of all nodes present at odd and even levels in a binary tree

Given a binary tree, calculate the difference between sum of all nodes present at odd levels and sum of all nodes present at even level.

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Given a binary tree, calculate the difference between sum of all nodes present at odd levels and sum of all nodes present at even level.

Given a binary tree, print its nodes in vertical order. Assume that the left and right child of a node makes 45 degree angle with the parent.

Given a binary tree, write an efficient algorithm to link nodes at the same level in the form of a linked list like structure.

In this post, we will implement Treap Data Structure and perform basic operations like insert, search and delete on it.

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Given a binary tree, find maximum difference between a node and its descendants in it.