Potřeboval bych pomoc s níže uvedenou úlohou:
Napište funkci compress, která zkomprimuje vstupní seznam tak, že po sobě jdoucích n totožných hodnot (včetně n = 1) náhradním párem (a . n).
Příklad:
(comress '(a a a b b c d d d d))
((a . 3) ( b . 2) (c . 1) (d . 4))
Funkci napište pomocí obyčejné (nikoliv iterativní) rekurze bez použití vlastních pomocných funkcí a funkcí vyššího řádu.
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