Reconstruct tree from inorder and postorder

Q: Reconstruct tree from inorder and postorder

This question evaluates understanding of binary tree traversal relationships, recursive construction techniques, and algorithmic time and space complexity, reflecting core data structures and recursion competencies.

Q: How do I approach Coding & Algorithms interview questions?

Coding & Algorithms questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master coding & algorithms interviews.

Question

Given two arrays representing the inorder and postorder traversals of a binary tree with unique values, reconstruct the original binary tree and return its root node. Implement a recursive solution, clearly defining base cases such as empty ranges. Analyze the time and space complexity. If you choose array slicing, explain its impact on complexity; alternatively, implement an index-range approach using a value-to-index map to achieve linear time.

Reconstruct tree from inorder and postorder

Overview

Comments (0)