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Optimal-Hash Exact String Matching Algorithms (2303.05799v1)
Published 10 Mar 2023 in cs.DS
Abstract: String matching is the problem of finding all the occurrences of a pattern in a text. We propose improved versions of the fast family of string matching algorithms based on hashing $q$-grams. The improvement consists of considering minimal values $q$ such that each $q$-grams of the pattern has a unique hash value. The new algorithms are fastest than algorithm of the HASH family for short patterns on large size alphabets.