mirror of
https://github.com/peklaiho/madlisp.git
synced 2024-11-22 21:35:03 +00:00
12 lines
463 B
Plaintext
12 lines
463 B
Plaintext
;; Functions to calculate Fibonacci numbers
|
|
|
|
;; Slow recursive version
|
|
(def slowFib (fn (n) (if (< n 2) n (+ (slowFib (- n 1)) (slowFib (- n 2))))))
|
|
|
|
;; Return the sum of the last 2 numbers in a sequence
|
|
(def sumOfLast (fn (l) (+ (last l) (get l (- (len l) 2)))))
|
|
|
|
;; Faster version, return vector of n numbers, tail call optimized
|
|
(def fibListRec (fn (n l) (if (< (len l) n) (fibListRec n (push l (sumOfLast l))) l)))
|
|
(def fibList (fn (n) (fibListRec n [0 1])))
|