99 questions/Solutions/2
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Revision as of 15:11, 13 July 2010 by Wapcaplet (talk | contribs) (copied solution from Editing 99 questions/1 to 10)
(*) Find the last but one element of a list.
myButLast :: [a] -> a
myButLast = last . init
myButLast' x = reverse x !! 1
myButLast'' [x,_] = x
myButLast'' (_:xs) = myButLast'' xs
myButLast''' (x:(_:[])) = x
myButLast''' (_:xs) = myButLast''' xs