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Design a Power Plant Electricity Allocator
Design a class-level system modeling a power plant that distributes electricity to multiple neighborhoods, each with a stated demand, subject to the plant's total capacity.
1. Problem Statement
Design a meeting room booking system: an admin can add a room to the system, any user can book a meeting in a room given a start time and duration (which must not overlap an existing booking in that room), and a booking can be cancelled to free its time slot.
2. Live Coding Format
Work in the provided coding workspace while explaining your decisions to the live interviewer. Validation may use inline tests, examples, comments, or a verbal walkthrough.
3. Key Focus Areas
- 1Room/Booking entity modeling
- 2Interval-overlap conflict detection
- 3Efficient free-room/free-slot queries
- 4Add/book/cancel API design
4. What Strong Candidates Should Demonstrate
- ✓Model rooms and bookings so overlap/conflict checks are correct and efficient.
- ✓Keep room-management and booking-conflict logic in cohesive, well-scoped classes.
- ✓Handle add/book/cancel as a small, clean public API.
- ✓Validate scheduling correctness with concrete handwritten interval examples.
Want interactive feedback?
Practice this problem in the live coding workspace while the interviewer probes your clarification, implementation, trade-offs, and validation.
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Object-Oriented DesignInterval SchedulingClass Modeling
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