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Reversing is Not Inherent in Lexicographical Permutation Generation
Author(s) -
J. S. Rohl
Publication year - 1990
Publication title -
the computer journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.319
H-Index - 64
eISSN - 1460-2067
pISSN - 0010-4620
DOI - 10.1093/comjnl/33.3.274
Subject(s) - reversing , lexicographical order , permutation (music) , flexibility (engineering) , computer science , algorithm , mathematics , combinatorics , statistics , physics , acoustics , materials science , composite material
In his comprehensive 1977 survey of permutation generation methods, Sedgewick [4] stated that ``(reversing) seems to be inherent in lexicographical (permutation) generation''''. It is the purpose of this paper to give an algorithm which does not use reversing and to show its relationship to the classical reversing algorithm of Ord-Smith [3]. We also give a number of related algorithms to illustrate the flexibility of the new algorithm.

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