I need to derange
the values of an array randomly (for some definition of random). I could use tye
's very nice Derangements iterator
and call it a random number of times, but that seems wasteful. I could also use List::Util
and continue to swap and elements that remain in their original positions until all are swapped - but that's seems clumsy.
Anyone have a good algorithm for generating a random derangement?
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