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Detect robot state after movements

RobloxSoftware Engineer · Onsite
MediumSoftware EngineerOnsiteCoding & Algorithms

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This interview question evaluates algorithm design, data structures, correctness, complexity, edge cases, and implementation details in a realistic interview setting. A strong answer for Detect robot state after movements states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

Question

Implement an algorithm to determine whether a robot following a given set of movement instructions ends in a valid recognized state (variant of a robot-recognition problem); optimize to pass all edge-case tests.