- print $ map (fst) $ map (leastCommon) $ map (countedLetters) $ transpose message
-
-
-
-countedLetters :: String -> Map.Map Char Int
-countedLetters name = Map.fromListWith (+) [(c, 1) | c <- filter (isLetter) name]
-
-mostCommon = Map.foldlWithKey (mostCommonP) ('a', 0)
-
-mostCommonP (letter0, count0) letter count
- | count > count0 = (letter, count)
- | otherwise = (letter0, count0)
-
-leastCommon = Map.foldlWithKey (leastCommonP) ('a', maxBound :: Int)