RosettaCodeData/Task/Fibonacci-sequence/Common-Lisp/fibonacci-sequence-5.lisp

5 lines
134 B
Common Lisp
Raw Permalink Normal View History

2023-07-01 11:58:00 -04:00
(defun fibonacci-tail-recursive ( n &optional (a 0) (b 1))
(if (= n 0)
a
(fibonacci-tail-recursive (- n 1) b (+ a b))))