Bloom Filter: Trade Dedup - Quant Trader Interview Question
Difficulty: Medium
Category: Algorithms & Data Structures
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Topics: bloom-filter, data-structures, hashing, probability, algorithms
Problem Description
You're building a high-frequency trading system and using a Bloom filter to quickly check if a trade ID has already been processed to prevent duplicate order submissions. The Bloom filter reports that a trade ID "exists." Can this be a false positive, a false negative, or both?
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