Implement an ObjectTracker That Merges Observations From Two Perception Systems
Company: Waymo
Role: Software Engineer
Category: Software Engineering Fundamentals
Difficulty: medium
Interview Round: Onsite
Overview: Two perception systems track the same objects under different IDs. Implement an ObjectTracker with addLink, addObservation and getHistory that returns an object's observations from both systems in timestamp order, testing identity grouping and history merging.