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path: root/jni/ruby/sample/fact.rb
blob: d8147a40f15262cc5331c7130a78a5fef3a8e472 (plain)
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def fact(n)
  return 1 if n == 0
  f = 1
  n.downto(1) do |i|
    f *= i
  end
  return f
end
print fact(ARGV[0].to_i), "\n"