Haskell solution:
import Data.List (foldl') import Data.Char (toLower, toUpper, isLower) solve :: String -> String solve str = if fromIntegral nLower / nTotal >= 0.5 then toLower <$> str else toUpper <$> str where (nLower, nTotal) = foldl' counter (0,0) str counter (nLower, nTotal) ch = if isLower ch then (nLower+1, nTotal+1) else (nLower, nTotal+1)
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Haskell solution: