How many times an item appears on a list

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Reference no: EM132212315

Question :

Write recursive Dr Racket functions to do the following. The functions should work on all types of lists( not just simple lists of atoms).

Document (via direct Dr Racket screens/outputs) both your code and the results of running the test cases.

a) Count how many times an item (atom) appears on a list.

Minimum test cases:

(count 3 '(1 5 6 7 8 3 2 3 )) returns 2

(count dog '(cat bird cat dog frog)) returns 1

(count a '(a(a b ) (c (b c)) ((a))b)) returns 3

(count 3 '(1)) returns 0

(count none '()) returns 0

Reference no: EM132212315

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