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Bloomberg
Coding Question
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Quick Summary
Design a stateful structure to append characters to a stream and query if the cumulative sequence is a palindrome.
Both operations must achieve sub-linear amortized time complexity to scale with very large inputs.
Relies on incremental mathematical updates rather than brute-force string reconstruction or scanning.
What This Tests
Rolling hash techniques and numerical string fingerprinting
Incremental state maintenance and amortized time analysis
Probabilistic verification and collision management strategies
Efficient algorithmic design for continuous data streams
Common Patterns
Hashing
Prefix Sum
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