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Easy · data_structures · Quant Developer interview question · hash-map, open-addressing, linear-probing, data_structures, static, no-heap
High-frequency trading (HFT) systems require deterministic, low-latency data structures for caching instrument metadata. A static hash map with a compile-time fixed capacity and linear probing for collision resolution is a common pattern to achieve this. By avoiding dynamic memory allocation entirely, this design eliminates allocator latency and ensures predictable performance, a critical requirement in latency-sensitive trading applications. Task Implement a StaticHashMap class with a fixed ca