Tree Algorithms MCQs

Topic-wise practice questions for Data Structures & Algorithms. Test your knowledge, check solutions on demand, and pace your preparation.

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Q11hard
What is the primary advantage of an AVL Tree over a standard BST?
Q12hard
An expression tree represents (3 + 5) * 2. Which traversal will yield the correct **Postfix** notation 3 5 + 2 *?
Q13hard
In an AVL tree, if a node has a Left Subtree of height 3 and a Right Subtree of height 1, what Rotation is required to fix the balance?
Q14hard
Given a BST, which traversal method will visit the nodes in ascending sorted order?
Q15easy
What is the maximum number of nodes in a Perfect Binary Tree with a height of 4? (Assume root is at height 0).
Q16hard
A database index uses a **B-Tree** instead of a simple BST. What is the main reason?
Q17easy
What is a Threaded Binary Tree?
Q18hard
What happens during a Left Rotation (RR) in an AVL tree?
Q19hard
What is the primary characteristic that differentiates a Binary Search Tree (BST) from a regular Binary Tree?
Q20hard
What is the time complexity of Level-order traversal in a tree with N nodes?