CSSE 220 – Object-Oriented Software Development

Homework 9

Objectives

Practice with arrays and ArrayLists in Java, in particular, two-dimensional arrays. Review for exam.

Tasks

1. Complete the assigned reading for the next session, according to the course schedule.
   • As you read, see if you can answer the self-check questions.
   • Bring your questions to class!
2. Complete the assessment exercise over this reading on ANGEL (under Lessons → Assignments).

3. Exam 1 is on Tuesday after break. Review the topics in chapters 1–7 of Big Java and write down at least two questions that you have about the material. We will collect these in-class on Monday after break. While preparing for the exam, recall:

   • You can ask questions by email to the csse220-staff mailing list.
   • The slides for the course are available on-line.
   • Additional resources that you might find helpful for the test (either preparing for it, or while taking it) include:
     • One page summaries: We're making available some one-page summaries of some of the topics we have discussed. These were prepared in a previous term, and we haven't reviewed them, but wanted you to have access in case you find them helpful.

4. Solo programming: This problem is due on Monday after break. Hopefully you were able to complete it in class before break. (After break, we'll assign work on recursion, which will be due that Thursday, so be sure to make a good start on this problem before break.)

   1. In Eclipse, checkout the TwoDArrays project.

   2. Complete the TODO items in TicTacToe and TicTacToeTest.
      • The items are numbered in the order that you should complete them.
      • Note: you might find the summary on arrays and ArrayList's helpful for this exercise.

5. Pair Programming: Conway’s Game of Life. This is due Thursday after break. It is a pair programming problem, so do not work on it without your partner. In particular, this means that you should not work on it over break. We will have much of the class period on Monday after break for working on this problem.

   1. In Eclipse, checkout the GameOfLife project from your shared repository for this project:

      • This is a shared repository where you’ll work on Game of Life with your partner.
      • The URL for your shared repository is:

            http://svn.csse.rose-hulman.edu/repos/csse220-201120-life-teamXX
        

        where XX is your team number as given by your instructor.
      • Note: Now that you’re working with a partner, you can get hard-to-resolve SVN conflicts with your partner’s code. So please remember to do Team → Update for the project
        • when you first start working in Eclipse, and
        • whenever you are about to commit.

        If you and your partner always work together doing pair programming, then conflicts should not be a problem. (But be sure to ask for help if you get stuck.)

   2. Complete the TODO items in GameOfLife and GameOfLifeTest. The TODO items are numbered in the order that you should complete them.
   3. Try some different initial configurations. The method getGliderList() in GameOfLifeMain generates a list representing the classic glider formation.
   4. Make sure that:
      • Both team members understand all the code the team is turning in.
      • All methods are documented.
      • All TODO items are completed.
      • No errors or warnings remain.

Turn-in Instructions

Turn in your programming work by committing it to your SVN repositories.