A set of tools to permute multisets without loops or hash tables and to generate integer partitions. The permutation functions are based on C code from Aaron Williams. Coollex order is similar to colexicographical order. The algorithm is described in Williams, A. Loopless Generation of Multiset Permutations by Prefix Shifts. SODA 2009, Symposium on Discrete Algorithms, New York, United States. The permutation code is distributed without restrictions. The code for stable and efficient computation of multinomial coefficients comes from Dave Barber. The code can be download from <http://tamivox.org/dave/multinomial/index.html> and is distributed without conditions. The package also generates the integer partitions of a positive, nonzero integer n. The C++ code for this is based on Python code from Jerome Kelleher which can be found here <http://jeromekelleher.net/category/combinatorics.html>. The C++ code and Python code are distributed without conditions.
Package details 


Author  James Curran, Aaron Williams, Jerome Kelleher, Dave Barber 
Maintainer  James Curran <j.curran@auckland.ac.nz> 
License  GPL2 
Version  0.111 
Package repository  View on CRAN 
Installation 
Install the latest version of this package by entering the following in R:

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