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Unformatted text preview: University of Waterloo CS 136 Midterm Exam Winter 2008 CS 136: Elementary Algorithm Design and Data Abstraction Instructor: Prabhakar Ragde March 3, 2008 Start time: 7:00 PM. End Time: 9:00 PM. Duration: 120 minutes Number of exam pages (including this cover sheet): 13 Closed book (UWsupplied calculators okay) Name: Student Number: Signature: # Points Possible Score Comments 1 10 2 10 3 15 4 10 5 10 6 10 7 10 8 8 Total 83 Mark 100 Directions Write your name and student ID number on every page. If you need extra paper for a question, use the back of that question’s page. 1 Name: Student Number: Name: Student Number: Name: Student Number: 1. (10 Points) Write Scheme code to bind uwcs and vendetta to values as represented by the following boxandpointer diagrams. (a) [5 points] 135 133 125 136 134 uwcs (b) [5 points] vendetta 2. (10 Points) Draw the boxandpointer diagrams that represent the results of evaluating the follow ing Scheme code. (a) [5 points] ( define a ( cons empty empty )) ( define b ( cons a a )) ( define c ( list b a )) (b) [5 points] ( define x ( cons 1 ( cons 2 empty ))) ( define y ( cons 3 ( cons 4 empty ))) ( setfirst! x ( rest y )) ( setrest! y x ) CS 136 2 CS 136 2 CS 136 2 Name: Student Number: Name: Student Number: Name: Student Number:...
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 Spring '08
 BECKER
 Binary numeral system, Decimal

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