Contents

;;; hamming.el --- Hamming (exercism)

;;; Commentary:

;;; Code:

(require 'cl)

(defun hamming-distance (dna1 dna2)
  "Determine number of mutations between DNA strands DNA1 and DNA2."
  (if (= (length dna1) (length dna2))
      (let ((dl1 (split-string-and-unquote dna1 ""))
            (dl2 (split-string-and-unquote dna2 "")))
        (loop with cnt = 0
              for x in dl1
              for y in dl2
              when (not (string= x y))
              do
              (setq cnt (1+ cnt))
              finally
              return cnt))
    (error "Strands are of different lengths")))


(provide 'hamming)
;;; hamming.el ends here

Version data entries

396 entries across 396 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.179	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.178	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.177	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.176	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.175	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.174	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.173	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.172	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.171	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.170	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.169	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.167	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.166	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.165	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.164	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.163	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.162	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.161	tracks/elisp/exercises/hamming/example.el
trackler-2.2.1.160	tracks/elisp/exercises/hamming/example.el