Mercurial > hg > toys
comparison elisp/streaks.el @ 9:f00fd0247806
Add elisp
| author | Jordi Gutiérrez Hermoso <jordigh@octave.org> |
|---|---|
| date | Tue, 01 Oct 2013 21:39:36 -0400 |
| parents | |
| children |
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| -1:000000000000 | 9:f00fd0247806 |
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| 1 (setq biggest-streaks nil) | |
| 2 (setq reps 1000.0) | |
| 3 | |
| 4 (dotimes (i reps) | |
| 5 | |
| 6 (setq groups nil) | |
| 7 | |
| 8 (let ((n 100) | |
| 9 (pre nil)) | |
| 10 (dolist (elt | |
| 11 ;; Make n random flips | |
| 12 (mapcar (lambda (x) (mod (random) 2)) | |
| 13 (make-list n nil))) | |
| 14 ;; Group streaks together | |
| 15 (progn | |
| 16 (if (eql elt pre) | |
| 17 (setq groups | |
| 18 (cons (cons elt (car groups)) (cdr groups))) | |
| 19 (setq groups | |
| 20 (cons (list elt) groups))) | |
| 21 (setq pre elt)))) | |
| 22 | |
| 23 ;; Get the longest streak | |
| 24 (setq biggest-streaks | |
| 25 (cons (apply 'max (mapcar 'length groups)) biggest-streaks))) | |
| 26 | |
| 27 (message "Average is %f " (/ (apply '+ biggest-streaks) reps)) |