nothingrealhappen/gist:2c0a9f0a5f85b4293983

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2016-02-18

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Write a method to shuffle a deck of cards. It must be a perfect shuffle - in other words, each 52! permutations of the deck has to be equally likely. Assume that you are given a random number generator which is perfect.

ScorpiusZ commented Feb 19, 2016

cards = (1..52).to_a
result = []
cards.size.times do
  result << cards.delete_at(cards.size * rand)
end