RosettaCodeData/Task/Factorial/Common-Lisp/factorial-3.lisp
2019-09-12 10:33:56 -07:00

5 lines
134 B
Common Lisp

(defun factorial (n)
"Calculates N!"
(loop for result = 1 then (* result i)
for i from 2 to n
finally (return result)))