Abstract
Let D be a long input string of n characters (from an alphabet of size up to 2w, where w is the number of bits in a machine word). Given a substring q of D, a shortest unique query returns a shortest unique substring of D that contains q. We present an optimal structure that consumes O(n) space, can be built in O(n) time, and answers a query in O(1) time. We also extend our techniques to solve several variants of the problem optimally.
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Hu, X., Pei, J., Tao, Y. (2014). Shortest Unique Queries on Strings. In: Moura, E., Crochemore, M. (eds) String Processing and Information Retrieval. SPIRE 2014. Lecture Notes in Computer Science, vol 8799. Springer, Cham. https://doi.org/10.1007/978-3-319-11918-2_16
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DOI: https://doi.org/10.1007/978-3-319-11918-2_16
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-11917-5
Online ISBN: 978-3-319-11918-2
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