CSci 1301: Problem Set 7

Due: Wednesday, November 11 at 11:59pm by e-mail

As always, please include a contract, a purpose, examples, and tests for each function.

Problem 1, written part (12 points)

Based on the project work that you did last week, please answer the following questions. You may answer the questions one by one or in an essay-like format (1-3 pages). I am looking for honest and thoughtful answers to the questions. Your answers will be graded on the quality of discussion, not on the opinion expressed.

• How did you plan your entire project? Did it work as planned? Would you approach it the same way if you have to do a similar project again?
• How do you approach a task in a program? Did these approaches change as your work on the project progressed? Describe a particular task that you tried to accomplish (say, using an item from a menu or drawing a picture). What functions did you decide to use, how did you come up with this decision?
• Do you find testing helpful? How do you write your test examples? Do you catch mistakes by testing your functions? Did you have an experience when a function still had mistakes after testing? Have you changed your testing strategy as the project progressed?
• Were there times when you had to change your code some time after it's been written? If yes, how easy or difficult that was? Would you write your code differently in order for it to be easily modifiable?
• Do you write comments in your code? Do you find them helpful?
• What aspects of Scheme did you find easy to work with? What aspects did you find difficult?
• What portion of the project work did you do with a group partner? What is your mode of group work: do you assign tasks? do you switch roles? What aspects of group work did you find helpful? What aspects did you find problematic or challenging? Do you feel that group work makes you learn more or less, compared to individual work? Your submissions are confidential, your feedback will not be shared with your partner(s).
• What are main things that you learned from doing the project?
• What would you like to change in the project setup?
• Feel free to add other comments related to the project work.

Problem 2 (6 points)

Exercise 17.6.1. Important: the two given lists are already sorted!

Think carefully of test cases. Specifically, consider the cases in which at least one of the lists is empty or one of the lists is a one-element list. Write down these test cases and expected values before you write your function. These test cases graded.

Problem 3 (6 points)

Exercise 17.8.4. Hint: you need at least one helper function. You may define it as "local" or at the top-level.

CSci 1301 course web site.