Talk:99 questions/1 to 10
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Does the problem 1 example need correction?
The problem refers us to last as a Prelude function providing the same functionality. However, last has type [a] -> a which differs from the Lisp example's type [a] -> [a]. Should we revise the example or should we rephrase the reference to last to highlight the difference?
Chrycheng 12:02, 12 September 2007 (UTC)
I think the answer to problem 6 is kind of "cheating". I think something like this would be a nice alternate solutions:
isPalindrome :: Eq (a) => [a] -> Bool
isPalindrome [] = True
isPalindrome [x] = True
isPalindrome (x:xs) = x == last xs && isPalindrome (init xs)
Michael 16:40, 17 January 2008 (UTC)