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	Initial revision
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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def fact(n)
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  if n == 0
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    1
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  else
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    n * fact(n-1)
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  end
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end
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print fact(ARGV[0].to_i), "\n"
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