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This place needs more life.

Name: Anonymous 2013-11-10 13:26

Yes. Please post more programming-relevant threads.

Name: Anonymous 2013-11-11 2:33

Write short solutions to problems in combinatorics in the language of your choice. I'll start:


(define (combinations k lis)
  (cond ((= k 0) '(()))
        ((null? lis) '())
        (else (append (map (lambda (rest-comb)
                             (cons (car lis) rest-comb))
                           (combinations (- k 1) (cdr lis)))
                      (combinations k (cdr lis))))))

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