3. Write a LISP function, call it "count", of two arguments, an atom x and a list L of sub-lists, which returns the number of sub-lists in L that contain the atom x. Use recursion. example: > (count 'b ( (a b c) (b c d) (c a) (d ab c)) ). Returns: 3 > (count 'd '((a b) (b) (c a))) Returns: 0

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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3. Write a LISP function, call it "count", of two
arguments, an atom x and a list L of sub-lists, which
returns the number of sub-lists in L that contain the
atom x. Use recursion.
example:
> (count 'b ( (ab c) (b c d) (c a) (d ab c)) ).
Returns: 3
> (count 'd '((a b) (b) (c a)))
Returns: 0
Transcribed Image Text:3. Write a LISP function, call it "count", of two arguments, an atom x and a list L of sub-lists, which returns the number of sub-lists in L that contain the atom x. Use recursion. example: > (count 'b ( (ab c) (b c d) (c a) (d ab c)) ). Returns: 3 > (count 'd '((a b) (b) (c a))) Returns: 0
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