Abstract
We give a simple algorithm that, given a straight-line program of size n for a string S of length N, tests whether S is square-free in O(n 4logN) time and O(n2) space. The algorithm also allows us to test square-freeness on an arbitrary composition system of size c for S, in O(c4log5N) time and O(c2log2N) space, which is faster than using the algorithm by Ga̧sieniec, Karpinski, Plandowski, and Rytter (1996) [4].
Original language | English |
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Pages (from-to) | 711-714 |
Number of pages | 4 |
Journal | Information Processing Letters |
Volume | 112 |
Issue number | 19 |
DOIs | |
State | Published - 15 Oct 2012 |
Bibliographical note
Funding Information:1Partially supported by the National Science Foundation Award 0904246, Israel Science Foundation grant 347/09, Grant No. 2008217 from the United States–Israel Binational Science Foundation (BSF) and DFG.
Keywords
- Algorithms
- Repetitions in strings
- Straight-line programs
- String processing
- Text compression
ASJC Scopus subject areas
- Theoretical Computer Science
- Signal Processing
- Information Systems
- Computer Science Applications