{"blocks": [{"key": "4ba19363", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "c0edb60f", "text": "Design and implement a thread-safe Rate Limiter; extend it to support multi-threading and a version where current time is not passed as an argument. Implement binary search from scratch without using any library functions. Design a data structure/method getTopK that returns the top-K elements, using a doubly-linked-list–based approach. Design a Meeting Scheduler that finds available meeting slots across calendars; follow-ups include: applying MapReduce to scheduling, and ranking rooms with priority factors such as room-usage count and meeting duration.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}