Quick Summary
- Design a mutable integer set that supports snapshot isolation for independent iterators.
- Iterators must reflect the set's state at creation time while preserving original insertion order.
- Achieve amortized O(1) time complexity for mutations and O(N+M) space complexity overall.
What This Tests
- Data structure design with versioning and state isolation
- Efficient memory management and simulated garbage collection
- Trade-off analysis between time and space complexity
- Iterator pattern implementation with lazy evaluation
Common Patterns
Hashing
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Stdout
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