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ukstudio/gist:47788

Created January 16, 2009 03:03
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gistfile1.rb
module Enumerable
def quicksort!
return self if self.size <= 1
piv = self[0]
top, bottom = self[1..-1].partition{|i| i < piv}
top.quicksort + [piv] + bottom.quicksort
end
end
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