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LIPIcs - Leibniz International Proceedings in Informatics. 31st International Symposium on Algorithms and Computation (ISAAC 2020)
Doi
Abstract
We initiate the study of sorting permutations using prefix block-interchanges, which exchange any prefix of a permutation with another non-intersecting interval. The goal is to transform a given permutation into the identity permutation using as few such operations as possible. We give a 2-approximation algorithm for this problem, show how to obtain improved lower and upper bounds on the corresponding distance, and determine the largest possible value for that distance
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