Implement a sliding-window hit counter

Q: Implement a sliding-window hit counter

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Question

Implement a hit counter that supports recordHit(timestamp) and getHits(pastSeconds). Use a fixed-size array to maintain a sliding time window (e.g., last 300 seconds) so each operation is O(

and memory is bounded. Explain how you handle timestamp collisions within buckets, generalize to arbitrary window sizes, refactor for reusability, and compare trade-offs versus alternatives (queue, deque, hashmap with buckets). Analyze time and space complexity.

Implement a sliding-window hit counter

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