When comparing multi-string search algorithms, Aho-Corasick and Rabin-Karp represent two completely different paradigms in computer science. While Aho-Corasick utilizes a structural, automaton-based approach to scan for all patterns simultaneously, Rabin-Karp relies on mathematical hashing to filter and match patterns.
The critical distinction is that Aho-Corasick guarantees linear execution time regardless of the number of patterns, while Rabin-Karp scales less efficiently as the number of patterns grows, making it better suited for smaller pattern sets. Direct Overview