Computer Science 15-110 (Lecture 4), Spring 2010
Homework 5
Due:  Mon 15-Feb-2010 at 10pm (email copy to koz) (no late submissions accepted).
Hw5 Submission Coordinator:  koz

For this homework, special rules apply.  Read these carefully!

• You should work collaboratively in small groups (no more than 5 students at a time; preferably, groups of 3).
  Note:  collaboration is not technically required, but it is strongly recommended.
   
• You may only collaborate with other students in our sections of 15-110 this semester.  Or the course staff, of course!
   
• Specifically:  you may work with other students to jointly author solutions (which in that case might be nearly identical).  Thus, on this assignment, you may look at other students' code so long as you are working closely together on the problem.
   
• That said:  you may not look at, copy, or submit code that you did not substantially help write yourself!
   
• The grading is as such:
  • Pass:  every method works properly and has been reasonably well tested.
    (Note:  a grade of Pass has no effect, positive or negative, on your semester hw average.)
  • 80:  at least 1 method has a significant bug (or is mostly unimplemented).
  • 70:  at least 2 methods each have a significant bug (or are mostly unimplemented).
  • 60:  at least 3 methods each have a significant bug (or are mostly unimplemented).
  • 50:  at least 4 methods each have a significant bug (or are mostly unimplemented).
  • 40:  at least 5 methods each have a significant bug (or are mostly unimplemented).
  • 30:  at least 6 methods each have a significant bug (or are mostly unimplemented).
  • 20:  at least 7 methods each have a significant bug (or are mostly unimplemented).
  • 10:  at least 8 methods each have a significant bug (or are mostly unimplemented).
     
• How to submit:
  • You will self-report your grade.
  • In the subject line of your email, indicate your grade.
  • Improperly reported grades will result in up to a 25-point reduction.
  • In the body of your email, explain briefly why you received that grade (no explanation necessary for "Pass" -- for the others, though, state which methods are buggy or missing).
  • As an attachment to the email, include all your .java files (and only your .java files!).  These must be included to receive a >0 score.
     
• What to submit:
  • Do all the problems from recitation 5 (the CA-directed and the student-directed parts).  That is:

  1. mostFrequentLetter
  2. isHappyNumber
  3. nthHappyNumber
  4. isHappyPrime
  5. nthHappyPrime
  6. isRotation
  7. isEmirpsPrime
  8. nthEmirpsPrime

  • Also, do this additional problem from class:
     
    9. baselProblem
       Write a Java program that verifies Euler's remarkable solution to the Basel Problem.  That is, write a program that verifies the following is true to very high accuracy if enough terms are used:
          1/1² + 1/2² + 1/3² + ... = π²/6
       You may wish to use the value Math.PI in your program.
        
  • Also include appropriate robotic test methods for all the methods.

Carpe diem!