Weak Repetitions in Strings
نویسنده
چکیده
A weak repetition in a string consists of two or more adjacent substrings which are permutations of each other. We describe a straightforward (n 2) algorithm which computes all the weak repetitions in a given string of length n deened on an arbitrary alphabet A. Using results on Fibonacci and other simple strings, we prove that this algorithm is asymptotically optimal over all known encodings of the output.
منابع مشابه
Repetitions in strings: Algorithms and combinatorics
The article is an overview of basic issues related to repetitions in strings, concentrating on algorithmic and combinatorial aspects. This area is important both from theoretical and practical point of view. Repetitions are highly periodic factors (substrings) in strings and are related to periodicities, regularities, and compression. The repetitive structure of strings leads to higher compress...
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