Computer Science 15-110, Lecture 9 (Sections M-Q), Fall 2009
Homework 1
Due:  Thu 3-Sep-2009 at 11:59pm (email copy to your CA)
(no late submissions accepted).

Read these instructions first!

• This is not a lab and this is not collaborative!
   
• You must work alone on this assignment (except for help from CA's or the course instructor, who you are always welcome to consult).

Then read these additional instructions!

• Getting started:
  1. Download
     To start, copy this file to your hard drive:  Hw1.zip
  2. Extract
     Extract the files to your hard drive (in a directory named "Hw1").
  3. Run DrJava
     And not JCreator.  Yes, you must use DrJava for this assignment.
  4. Load Homework Project
     Next, running DrJava (and not JCreator), select Project/Load, and find the "hw1-drjava-project.xml" file in the Hw1 directory.
     Hint #1:  if you do not see it, you are probably using an older version of DrJava.  Download the most recent version in that case.
     Hint #2:  If you are on a Linux machine in 5419, don't forget this hint:  In DrJava's edit menu, open the preferences dialog.  Paste the following path into the "Tools.jar Location" field:
        /usr/lib/jvm/java-1.6.0-sun-1.6.0.15.x86_64/lib/tools.jar
     Apply the change, and close DrJava. When you re-open DrJava, it should successfully find the compiler and work correctly. Each user should only need to follow this procedure once ever.
  5. Sign
     Next, be sure to include your name, andrew id, and section in a comment on the first line of the file!
  6. Solve
     And finally, edit/compile/run that file until it passes all the tests (well, that's the goal, at least)
     .
• Programming guidelines:
  • Try to use well-named variables, proper indenting, reasonable commenting, etc.
  • Note:  You may not use Java concepts we have not yet covered, including loops (do/while/for), conditionals ("if" statements or ternary operators (?:)), arrays, or methods from any classes in java.util.* (besides Scanner or others we explicitly use) to solve these problems (which isn't a problem for most of you, seeing as we have not yet covered these!).  While they may be helpful, every problem here is solvable without them, and they are not permitted for now.
     
• What to submit
  • Do not submit the entire Hw1 directory!  Just zip up the "src" directory under Hw1, and submit the src.zip file you create.
     
• How to submit
  • Send an email with your src.zip file as an attachment to your CA by the submission deadline.  Do not miss the deadline, even by one minute!  Email problems are not a valid excuse for late submissions.
  • You should "cc" yourself in that email, too, just to confirm that you properly sent the email.
     
• Note:
  • Improper submissions will be penalized up to 10 points and may be rejected.
  • Late submissions will be rejected.

Carpe diem!