Periodicity algorithms and a conjecture on overlaps in partial words
نویسندگان
چکیده
We propose an algorithm that given as input a full word w of length n, and positive integers p and d, outputs, if any exists, a maximal pperiodic partial word contained in w with the property that no two holes are within distance d (so-called d-valid). Our algorithm runs in O(nd) time and is used for the study of repetition-freeness of partial words. Furthermore, we construct an infinite word over a five-letter alphabet that is overlap-free even after holes are inserted in arbitrary 2-valid positions, answering affirmatively a conjecture from BlanchetSadri, Mercaş, and Scott.
منابع مشابه
An Answer to a Conjecture on Overlaps in Partial Words Using Periodicity Algorithms
We propose an algorithm that given as input a full word w of length n, and positive integers p and d, outputs (if any exists) a maximal p-periodic partial word contained in w with the property that no two holes are within distance d. Our algorithm runs in O(nd) time and is used for the study of freeness of partial words. Furthermore, we construct an infinite word over a five-letter alphabet tha...
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ورودعنوان ژورنال:
- Theor. Comput. Sci.
دوره 443 شماره
صفحات -
تاریخ انتشار 2012