Your question is Garbage Collection Algorithm. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
How would you implement a garbage collection algorithm?
Explain the memory model and object metadata you would assume, then design the collection algorithm and its execution phases. Address reachability, reclamation, fragmentation, pause-time control, concurrency, failure recovery, and how you would test correctness and performance.
