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Text File  |  1998-01-16  |  127b  |  11 lines
  1. def fact(n)
  2.   return 1 if n == 0
  3.   f = 1
  4.   while n>0
  5.     f *= n
  6.     n -= 1
  7.   end
  8.   return f
  9. end
  10. print fact(ARGV[0].to_i), "\n"
  11.