Convert a Sorted Doubly Linked List to a Balanced BST In Place
Company: Salesforce
Role: Member of Technical Staff
Category: Software Engineering Fundamentals
Difficulty: medium
Interview Round: Onsite
Overview: Rewire a sorted doubly linked list into a height-balanced binary search tree without allocating replacement nodes. The solution uses list length and in-order construction to preserve node identity, duplicates, linear time, balanced subtree sizes, and safe pointer updates.
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