## Count the number of nodes in a given binary tree

Objective: Given a binary tree, write an algorithm to count all the nodes in the tree. Example: Approach: Do postorder traversal. If the root is null return 0. (base case all well for the...

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Objective: Given a binary tree, write an algorithm to count all the nodes in the tree. Example: Approach: Do postorder traversal. If the root is null return 0. (base case all well for the...

Objective: Given a binary tree write an algorithm to convert it into threaded binary tree. Note: Tree node has extra Boolean field to be used. In earlier article “Introduction to Threaded Binary Tree” we...

In earlier article “Introduction to Threaded Binary Tree” we have seen what is threaded binary tree, types of it and what advantages it has over normal binary tree. In this article we will see...

What is Threaded Binary Tree?? A binary tree is threaded by making all right child pointers that would normally be null point to the inorder successor of the node (if it exists), and all left child pointers...

Objective: Given a binary search tree (BST), convert it into greater sum tree. What is greater sum tree: Greater sum tree is a tree in which every node contains the sum of all the...

Objective: Given ‘N’ windows where each window contains certain number of tickets at each window. Price of a ticket is equal to number of tickets remaining at that window. Write an algorithm to sell...

Objective: Given a binary tree, find the sum of all the nodes which are left as well as leaves nodes. Example: Approach: Approach is quite simple. Do the inorder traversal check if...

Objective: Given a binary tree, write an algorithm to convert it into its Sum tree. What is Sum tree: Sum tree of a binary tree, is a tree where each node in the converted...

Objective: Given a binary tree, write a non recursive or iterative algorithm for postorder traversal. Example: Earlier we have seen “What is postorder traversal and recursive algorithm for it“, In this article we will...

Objective: Given a binary tree, write a non recursive or iterative algorithm for preorder traversal. Example: Earlier we have seen “What is preorder traversal and recursive algorithm for it“, In this article we will...

Objective: Given a binary tree, write a non recursive or iterative algorithm for Inorder traversal. Example: Earlier we have seen “What is Inorder traversal and recursive algorithm for it“, In this article we will...

Objective: Given a binary tree, write an algorithm to delete it. This is one of the basic problem in trees. if you are new to trees then this problem will help you build your...

Objective: Given a binary tree and a given number x, Write an recursive algorithm to search the element in the tree. This is one of the very basic problems of tree. If you are...

There are multiple ways to in which you can traverse a tree. In this article we will see these traversals in detail. If you are new to trees then I would recommend that you...

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