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By mswatcher
via ericlippert.com
Submitted: Apr 30 2013 / 09:46

Last time on FAIC I showed how you could produce the mth permutation of n elements, where m is a number between zero and n!-1 that chooses from the n! possible permutations. There's a very interesting way to represent numbers that are always less than n! for a given n that I thought I might talk about today.
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