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What does the following Scheme function do? (define (y s lis) (cond ( ( null? lis) ( ) ) ( ( equal? s (car lis
What does the following Scheme function do?
(define (y s lis)
(cond
( ( null? lis) ( ) )
( ( equal? s (car lis )) lis)
(else ( y s (cdr lis)))
) )
What does the following Scheme function do?
(define (x lis)
(cond
((null? lis) 0)
((not (list? (car lis))
(cond
((eq? (car lis) #f) (x (cdr lis)))
(else (+ 1 (x (cdr lis)))))
(else (+ (x (car lis)) (x (cdr lis))))
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