Hash Tables as Engines of Randomness at the Limits of Computation: A Unified Review of Algorithms

Hash tables embody a paradox of deterministic structure that emerges from controlled randomness. They have evolved from simple associative arrays into algorithmic engines that operate near the physical and probabilistic limits of computation. This review unifies five decades of developments across universal and perfect hashing, collision-resolution strategies, and concurrent and hardware-aware architectures. The synthesis shows that modern hash tables act as thermodynamic regulators of entropy, able to transform stochastic mappings into predictable constant-time access. Recent advances in GPU and NUMA-aware designs, lock-free and persistent variants, and neural or quantum-assisted approaches further expand their capabilities. The analysis presents hash tables as models that evolve order within randomness and expand their relevance from classical computation to quantum and neuromorphic frontiers.

• Publication year

  2025

• Venue

  Algorithms

• Publication date

  2025-12-18

• Fields of study

  Computer Science

• Identifiers
  DOI 10.3390/a18120804
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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