aparler/RosettaCodeData
1
0
Fork 0
Code Issues 12 Pull requests 3 Projects Releases Packages Wiki Activity Actions

Initial data commit

Browse source
This commit is contained in:
Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 72d218235f
commit f23f22d71c
199087 changed files with 3378941 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

9
Task/Caesar-cipher/Common-Lisp/caesar-cipher-2.lisp Normal file
View file

@ -0,0 +1,9 @@
(defun caesar-encipher (s k)
(map 'string #'(lambda (c) (z c k)) s))
(defun caesar-decipher (s k) (caesar-encipher s (- k)))
(defun z (h k &aux (c (char-code h))
(b (or (when (<= 97 c 122) 97)
(when (<= 65 c 90) 65))))
(if b (code-char (+ (mod (+ (- c b) k) 26) b)) h))