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  1. Practice
  2. Functional Programming
  3. Ad Hoc
  4. Remove Duplicates
  5. Discussions

Remove Duplicates

  • tury345 + 0 comments

    I used

    filt :: [Char] -> [Char]
filt ""     = []
filt (x:xs) = x : (filt $ filter (/= x) xs)

    or

    filt s = foldl (\acc x -> acc ++ (if x `elem` acc then "" else [x])) "" s