But, but, so pretty and elegant! quick_sort([]) -> []; quick_sort([H | T]) -> quick_sort([X || X <- T, X < H]) ++ [H] ++ quick_sort([X || X <-

But, but, so pretty and elegant! quick_sort([]) -> []; quick_sort([H | T]) -> quick_sort([X || X <- T, X < H]) ++ [H] ++ quick_sort([X || X <- T, X >= H]).