Publikation:

Optimal Leaf Ordering of Complete Binary Trees

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Brandes_opus-117791.pdf
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2007

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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-117791
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https://doi.org/10.1016/j.jda.2006.09.003
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Attribution-NonCommercial-NoDerivs 2.0 Generic

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Open Access Green

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Informatik und Informationswissenschaft: Publikationen
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Published

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Journal of Discrete Algorithms. 2007, 5(3), pp. 546-552. Available under: doi: 10.1016/j.jda.2006.09.003

Zusammenfassung

Ordering a set of items so as to minimize the sum of distances between consecutive elements is a fundamental optimization problem occurring in many settings. While it is View the MathML source-hard in general, it becomes polynomially solvable if the set of feasible permutations is restricted to be compatible with a tree of bounded degree. We present a new algorithm for the elementary case of ordering the n leaves of a binary tree with height View the MathML source. Our algorithm requires View the MathML source time and View the MathML source space. While the running time is a log-factor away from being asymptotically optimal, the algorithm is conceptually simple, easy to implement, and highly practical. Its implementation requires little more than a few bit-manipulations.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
004 Informatik

Schlagwörter

optimal leaf ordering, bit-manipulation algorithms, permutations

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ISO 690BRANDES, Ulrik, 2007. Optimal Leaf Ordering of Complete Binary Trees. In: Journal of Discrete Algorithms. 2007, 5(3), pp. 546-552. Available under: doi: 10.1016/j.jda.2006.09.003
BibTex
@article{Brandes2007Optim-3022,
  year={2007},
  doi={10.1016/j.jda.2006.09.003},
  title={Optimal Leaf Ordering of Complete Binary Trees},
  number={3},
  volume={5},
  journal={Journal of Discrete Algorithms},
  pages={546--552},
  author={Brandes, Ulrik}
}
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