The permutation package

[ Tags: bsd3, data-structures, library, math ] [ Propose Tags ]

This library includes data types for storing permutations and combinations. It implements pure and impure types, the latter of which can be modified in-place. The library uses aggressive inlining and MutableByteArray#s internally, so it is very efficient.

The main utility of the library is converting between the linear representation of a permutation and a sequence of swaps. This allows, for instance, applying a permutation or its inverse to an array with O(1) memory use.

Much of the interface for the library is based on the permutation and combination functions in the GNU Scientific Library (GSL).

Properties

Versions 0.1, 0.2, 0.2.1, 0.3, 0.4, 0.4.1, 0.5.0, 0.5.0.1, 0.5.0.2, 0.5.0.3, 0.5.0.4, 0.5.0.5
Dependencies base, ghc-prim [details]
License BSD3
Copyright (c) 2008. Patrick Perry <patperry@stanford.edu>
Author Patrick Perry
Maintainer Patrick Perry <patperry@stanford.edu>
Category Data Structures, Math
Home page http://stat.stanford.edu/~patperry/code/permutation
Uploaded Sat Dec 13 21:35:32 UTC 2008 by PatrickPerry
Distributions NixOS:0.5.0.5, Tumbleweed:0.5.0.5
Downloads 4291 total (186 in the last 30 days)
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