Explain how you would approach algorithmic problems involving arrays, linked lists, and sets, and how you would design a finite state machine (FSM) for an embedded system.
Your response should describe the strategy you would use for each data structure, including when to use indexing, pointer traversal, and set membership. Then explain how you would define FSM states, events, transitions, guards, and error handling for a deterministic embedded design.
def interview_response(problem_type):