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Consider the following Scheme program: (define (mystery W) (cond ( (number? W) ( (number? (car W)) (cdr W)) (else (cons (mystery (car W)) (cdr W))) Note that number? is a built-in predicate that returns true if its argument is a number and false otherwise. a. (6%) What does the above Scheme function x do? b. (14%) What is the result of the following calls: (mystery (9 8 (2 4) (4 5)))) (mystery (( (5 3) (8)) (4)))

Consider the following Scheme program: (define (mystery W) (cond ( (number? W) ( (number? (car W)) (cdr W)) (else (cons (mystery (car W)) (cdr W))) Note that number? is a built-in predicate that returns true if its argument is a number and false otherwise. a. (6%) What does the above Scheme function x do? b. (14%) What is the result of the following calls: (mystery (9 8 (2 4) (4 5)))) (mystery (( (5 3) (8)) (4)))

Computer Networking: A Top-Down Approach (7th Edition)
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
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Consider the following Scheme program: (define (mystery W) (cond ( (number? W) ()) ( (number? (car W)) (cdr W)) (else (cons (mystery (car W)) (cdr W))) )) Note that number? is a built-in predicate that returns true if its argument is a number and false otherwise. a. (6%) What does the above Scheme function x do? b. (14%) What is the result of the following calls: (mystery (9 8 (2 4) (4 5)))) (mystery (((5 3) (8)) (4)))
Transcribed Image Text:Consider the following Scheme program: (define (mystery W) (cond ( (number? W) ()) ( (number? (car W)) (cdr W)) (else (cons (mystery (car W)) (cdr W))) )) Note that number? is a built-in predicate that returns true if its argument is a number and false otherwise. a. (6%) What does the above Scheme function x do? b. (14%) What is the result of the following calls: (mystery (9 8 (2 4) (4 5)))) (mystery (((5 3) (8)) (4)))
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