Introduction to Hash Tables

A beginner-friendly overview of hash tables, explaining how they work by combining arrays and linked lists. Covers the limitations of plain arrays, how linked lists address those limitations, and how hash tables combine both approaches. Explains key concepts including hash functions, key-to-address mapping, the modulo-division technique, collision handling via collision chains, and clustering. Concludes with real-world use cases such as databases, virtual machines, and graph algorithms.