Leetcode 362. Design Hit Counter
Design a hit counter that records timestamps of hits and returns the number of hits in the past 5 minutes (300 seconds). The challenge is to support high-frequency record and query operations efficiently by maintaining a sliding-window summary (e.g., queue or fixed-size circular buffer) that discards expired hits.
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Early August, 2025
Apple
Staff
Late July, 2025
Apple
Mid-level
LeetCode 362
Late July, 2025
Apple
Senior
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