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#string-hashing

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String Hashing and Rabin-Karp Algorithm: O(1) Substring Queries in Competitive Programming

Generalcompetitive-programmingdata structures

String Hashing and Rabin-Karp Algorithm: O(1) Substring Queries in Competitive Programming

Learn how polynomial rolling hash and the Rabin-Karp algorithm enable efficient string matching, substring comparison, and pattern searching using double hashing.

6/3/2026