Quick Overview

Reconstruct one deterministic binary tree from preorder and postorder traversals with distinct values. Preserve both traversals, attach an ambiguous single child on the left, and return a compact level-order representation with explicit missing children where needed.

Reconstruct a Binary Tree from Preorder and Postorder Traversals

Company: ByteDance

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: medium

Interview Round: Technical Screen

Overview: Reconstruct one deterministic binary tree from preorder and postorder traversals with distinct values. Preserve both traversals, attach an ambiguous single child on the left, and return a compact level-order representation with explicit missing children where needed.

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