bigjason · February 29, 2016 18:16
diff --git a/factorial.scala b/factorial.scala
 @scala.annotation.tailrec
 def fact(n: Int, acc: BigInt = 1): BigInt =
  if(n < 0) throw new Exception("n must be >= 0")
  else if (n == 0) acc
  else fact(n - 1, acc * n)
	@scala.annotation.tailrec
	def fact(n: Int, acc: BigInt = 1): BigInt =
	if(n < 0) throw new Exception("n must be >= 0")
	else if (n == 0) acc
	else fact(n - 1, acc * n)