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pius/gist:215640

Created October 22, 2009 01:22
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gistfile1.rb
#obligatory clever one-liner in response to http://rubyflow.com/items/2904
def sum_of_multiples_of_3_and_5_less_than(limit)
1.upto(limit-1).reject { |x| (x.modulo(3) != 0) and (x.modulo(5) != 0) }.inject(0) {|n,sum| n + sum}
end
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