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Talk:H-99: Ninety-Nine Haskell Problems

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Line 12: Line 12:
 
(if (atom item)
 
(if (atom item)
 
item
 
item
(make-list (car item)
+
(make-list (car item) :initial-element (cadr item))))
:initial-element (cadr item))))
 
 
list))
 
list))
 
-- roerd
 
-- roerd

Revision as of 15:13, 15 December 2006

What does "Lisp solution?" mean? Lots of them are listed "Yes", and lots are listed "No", but I can't detect a difference between these entries... -- dmwit

It's just whether or not there's a lisp solution available. If you go to the description of the problem, and click on the problem number, it'll either link you to actual lisp code, or a "not found" page. There are 25 of them which actually have lisp code available. -- chessguy

What is the meaning of that scoreboard? Even though there is no solution on the L-99 site, there may still exist a LISP solution, even a trivial one. And since that L-99 site is no wiki and this site is, the scoreboard seems just misleading to me.

Just an example for Problem 12:

(defun decode-modified (list)
  (mapcar (lambda (item)
            (if (atom item)
                item
                (make-list (car item) :initial-element (cadr item))))
          list))

-- roerd