CS241: Spring 2015 -- Lecture 21, debugging, fib, and review

1. Administrivia
   1. Exam Friday!
   2. Jury duty for me 3/12
   3. Finish/demo lab today! (so you can have time to study/review)
2. Exam practice: Write a method that is passed a String (composed only of digits), and returns an ArrayList<Integer> with all the digits, least signficant first.
3. Finishing up fib(1000) -- a homemade BigInt class
   1. arbitrarly big ints
   2. representation: list of digits; smallest first
   3. operations:
      1. new
      2. add(BigInt) -- what might go wrong
         1. this is shorter
         2. that is shorter
         3. same length?
      3. toString
   4. Testing before use!!
4. Review