sort/quicksort.hs


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quickSort :: Ord a => [a] -> [a]
quickSort [] = []
quickSort (x:xs) =
    let less = [ a | a <- xs, a < x ]
        equal = [ b | b <- (x:xs), b == x ]
        greater = [ c | c <- xs, c > x ]
    in quickSort less ++ equal ++ quickSort greater