LISP Questions & Answers – Recursion

This set of LISP Multiple Choice Questions & Answers (MCQs) focuses on “Recursion”.

1. Which is bounded to a list of all unaccounted argument values?
a) REST
b) &REST
c) RAISE
d) &RAISE
View Answer

2. Which allow procedures to use themselves again?
a) Recursion
b) Reuse
c) Reintiate
d) None of the mentioned
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3. Which eliminate the need for many auxiliaries?
a) Parameters
b) Block parameters
c) Optional parameters
d) All of the mentioned
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4. Which can appear without an initial form?
a) Parameter
b) Block parameter
c) Optional parameter
d) Aux parameter
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5. What value will assigned, if there is no argument marked by a matching keyword?
a) T
b) NIL
c) False
d) Both NIL & False
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6. What is the output of the following statement?

span class="sy0"> * (defun higher-level-expt (m n)(if (zerop n)1 (* m(lower-level-expt m (- n 1)))))

a) Higher
b) Higher-level-expt
c) Lower
d) Lower-level-expt
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7. What is the output of the following statement?

span class="sy0"> * (defun root (x &optional n) (if n (expt x (/ 1 n))(sprt x)))
* (root 27 3)

a) 3
b) 27
c) 3.0
d) None of the mentioned
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8. What is the output of the following statement?

span class="sy0"> * (defun punc (l) (append l '(period)))
* (punc '(this))

a) This
b) Period
c) This period
d) All of the mentioned
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9. What is the output of the following statement?

span class="sy0"> * (defun raise-aux (result number-list)(if (endp number-list) result (raise-aux (expt result (first number-list)) (rest number-list))))
* (defun raise (x &rest numbers) (raise-aux x numbers))
* (raise 5 3)

a) 5
b) 3
c) 125
d) 25
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10. What is the output of the following statement?

span class="sy0"> *  (setf pairs '((maple shade) (apple fruit)))
* (member '(maple shade) '((maple shade) (maple shade)) :test-not #'equal)

a) Maple
b) Shade
c) Nil
d) T
View Answer

Sanfoundry Global Education & Learning Series – LISP Programming Language.

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