(@problem 1)
;; Below is the start of a data defini9on called Course that represents limited
;; informa9on about UBC courses. Below there are only two example data.
;; Please complete this defini9on by adding constants C110, C213, C313 and C317
;; which are representa9ons of the descendent tree for 110, 213, 313 and 317.
;; You can find the informa9on you need at
;; hIps://cs110.students.cs.ubc.ca/psets/pset-06-image.png
;;
;; NOTE 1: Use the informa9on in the image above, rather than any other source.
;; We are significantly simplying the informa9on.
;;
;; NOTE 2: Do this very carefully, the autograder wants to see correct results
;; from the func9ons you design to operate on this data.
;;
;; NOTE 3: The tree you will make for C110 will be a bit odd because 210 has 110
;; as a pre-req, and both 213 and 221 have 210 as a pre-req, and313 has
;; 213 AND 221 as a pre-req, and 317 has 213 AND 221 as a pre-req. As a
;; result, 313 and 317 will both show up twice in your descendent tree
; for C110. This is okay for this problem set.
;; NOTE 4: Expect this step of the problem set to take you some 9me.
(@htdd Course ListOfCourse)
(define-struct course (number credits dependents))
;; Course is (make-course Natural Natural ListOfCourse)
;; interp. a course with a course number,
;; the number of credits the course is worth, and a
;; list of courses that list this course as a direct pre-requisite
;; ListOfCourse is one of:
;; - empty
;; - (cons Course ListOfCourse)
;; interp. a list of courses
(@problem 2)
;;
;; Design a func9on that produces the list of all the course numbers in the
;; course's tree including the given course's number.
;;
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller skye3. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.