Write purely functional Scheme functions to (a) Return all rotations of a given list. For example, (rotate
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Write purely functional Scheme functions to
(a) Return all rotations of a given list. For example, (rotate ‚(a b c d e)) should return ((a b c d e) (b c d e a) (c d e a b) (d e a b c) (e a b c d)) (in some order).
(b) Return a list containing all elements of a given list that satisfy a given predicate. For example, (filter (lambda (x) (< x 5)) ‚(3 9 5 8 2 4 7)) should return (3 2 4).
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