Tags: 
permutations x 



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8kviews1Get the inversion number of a permutationscorePython / combinatorics, discrete, inversion, math, permutations / by Samuel James Erickson (8 years ago, revision 2)
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6kviews0Bell permutations using Even's nonrecursive algorithmscorePython / bell, johnson, permutations, steinhaus, trotter / by Chris Smith (10 years ago, revision 2)