Question: Here is a skeleton for the standard quicksort algorithm in Haskell: quicksort [] = [] quicksort (a : l) = quicksort [...] ++ [a] ++

Here is a skeleton for the standard quicksort algorithm in Haskell:

quicksort [] = []
quicksort (a : l) = quicksort [...] ++ [a] ++ quicksort [...]

The ++ operator denotes list concatenation (similar to @ in ML). The : operator is equivalent to ML’s :: or Lisp’s cons. Show how to express the two elided expressions as list comprehensions.

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