Hi Steve,

On 12/11/06, Steve Downey <sdowney@gmail.com> wrote:
> transforming "one two  three four    " into "    four   three  two one",  how could this be done?

This is a good problem for Parsec:

import Text.ParserCombinators.Parsec

reverseWords = concat . reverse . split
   where
      split = fromRight . parse wordsSpaces ""
      fromRight (Right s) = s
      wordsSpaces = many (many1 space <|> many1 alphaNum)

-Greg