|
Date
|
Announcements
|
| May 5, 2003 |
According to the Registrar's
schedule of exams, our final exam is in Towne 311, Tuesday, May 6,
1:30-3:30. |
| May 5, 2003 |
If you are having trouble with traversing Binary
Trees, I've added a slide (#12) on the "flag" technique that
David Duffy told us about. |
| May 1, 2003 |
I've posted a Study
Guide for the final exam. |
| May 1, 2003 |
Fixed a broken link to the Animation
pages. |
| April 23, 2003 |
If you have been having trouble in the last assignment
with the board not being displayed, I have a new version of Board.java
(and ricochet.zip) that
may work better for you. |
| April 23, 2003 |
I've posted the animation
pages, and added the missing
page about how to do double buffering. (For a more thorough (but somewhat
out of date) explanation, see http://www.csc.vill.edu/~dmatusze/games/animation/index.html.)
This material will not be on the final exam. |
| April 22, 2003 |
Due to the upcoming CIT596 final exam, the due date
for the final assignment is extended to Sunday, April 27, before
midnight. |
| April 22, 2003 |
I've posted (on Blackboard)
some preliminary grades. These are based only on assignments 1 through
5 and the two midterms. |
| April 10, 2003 |
The due date for the seventh
assignment (Dijkstra's algorithm) has been changed to Tuesday, April
15. |
| April 10, 2003 |
A week or two ago I wrote up and posted some examples
of Tree Traversals and Searches,
but it looks like I forgot to link to it. The link is now there. |
| April 3, 2003 |
The Seventh
Assignment is ready. Due April 10. |
| March 28, 2003 |
 MCIT
Pizza Social
Wednesday, April 9, 5pm
Raisler Lounge |
| March 25, 2003 |
Here's a study
guide for the second midterm. |
| March 24, 2003 |
For the second midterm, please read through chapter
5 of The Pragmatic Programmer. |
| March 20, 2003 |
The Sixth Assignment
is ready. Due date is April 1. |
| March 20, 2003 |
The due date for assignment 5, BinaryTree/BinaryTreeEditor,
is now Tuesday, March 25. |
| March 20, 2003 |
My apologies--I had not, in fact, posted the date
for the final exam. It is (according to http://www.upenn.edu/registrar/timetable/tfinals.html)
Tuesday, May 6, 1:30-3:30. |
| March 18, 2003 |
I've posted my version of LispInterpreter.zip.
I think it's reasonably well written (bug reports would be appreciated),
and it might be worthwhile to compare my version with yours. |
| March 12, 2003 |
The answers to
the first midterm have been posted. |
| March 6, 2003 |
Here's a second version of the BinaryTreeEditor
suggestions. |
| March 6, 2003 |
David Duffy found this really cool binary
search tree applet on the Web. |
| February 27, 2003 |
In case you didn't notice, there is a new
assignment posted. You have quite a lot of time on it because I expect
the second part to be quite difficult. |
| February 18, 2003 |
Here is the new version of LispUtil.zip.
The version of toString(Sexpr) in it assumes that your atom(Sexpr)
and isNull(Sexpr) methods each return a Sexpr,
and that I can do an == comparison with your Sexpr.NIL. |
| February 18, 2003 |
We do have class today. I will probably be in for
office hours as well. |
| February 16, 2003 |
If you need additional help with the assignment, here
is an interpreter walkthrough
page that may be of assistance. This page contains more detailed suggestions
for how to write your interpreter; it does not include any new requirements. |
| February 15, 2003 |
Errata for fourth assignment:
- I forgot to add the link for LineReader.java.
But it's the same as last semester.
- I said that
defun should return void. I
also said it should return a Sexpr representing an atom
whose value is a message saying that the function has been defined.
The first statement (return void) is an error, the second
one (return a Sexpr) is correct.
- Windows does not recognize control-D as meaning end of file. In fact,
Windows does not seem to recognize anything as meaning end of
file. I suggest you add an
exit function to your other
Lisp functions to compensate for this problem.
|
| February 14, 2003 |
BlueJ is supposed to be working on the machines in Moore 207 now. If
it is not, here are two alternatives:
- Use BlueJ in one of the Windows labs. It's under "Course-specific
software/CIS."
- Just use the command line and any editor. Here is a page on Doing
Without BlueJ.
|
| February 13, 2003 |
The first midterm will be on February 20. It will
cover materials from the lectures up to and including the February 18 lecture,
plus the Preface and Chapters 1 and 2 of "The Pragmatic Programmer." |
| February 13, 2003 |
Correction: Some of the methods I called in LispUtil
were in the wrong class (I had car, cdr, atom,
isNull in the Sexpr class instead of in the
Lisp class). That and some other minor problems have now
been corrected.
I've also updated the help
page to discuss using .class files.
|
| February 12, 2003 |
If you are still having trouble with assignment 3,
here is some help. |
| February 6, 2003 |
Revised due date for assignment 3: Monday, February
10, before midnight. |
| February 5, 2003 |
I've verified that my slides on parsing
Lisp are correct, and they are now posted. |
| February 3, 2003 |
For people that are still struggling with assignment
2 (sorting in Lisp) I've put up a page
of hints. Very explicit hints, in fact. Pseudocode. |
| February 2, 2003 |
Important correction
on assignment 3. You cannot name a function null, because
that is a reserved word. Please use the name isNull instead.
|
| January 30, 2003 |
Clarifications on Lisp sorting assignment:
- As always, a "permutation" is an arrangement of the same
elements. If one list is a permutation of another, they necessarily
have the same number of elements. If a given element occurs N times
in one permutation, it occurs N times in every other possible permutation.
- If lists A and B are identical, then B is a permutation of
A--this is the "trivial" permutation.
permutedp is supposed to work for lists of atoms,
not just lists of integers.
|
|
January 30, 2003
|
Thursdays 2-4 is my time to be in the Linux lab (Moore 207) helping students
with their programs. This coming Thursday, February 6, I plan to give
a short presentation on using Linux. (It's not hard--honest!)
|
|
January 22, 2003
|
Blackboard has been set up
for this course.
|
|
January 16, 2003
|
I finally have the links correct (and I'm sure you'll tell me
if I'm wrong). Also, please read the following pages: Programming
Requirements and About this course.
|
|
January 16, 2003
|
XLisp can be downloaded from http://burks.brighton.ac.uk/burks/software/langs/index.htm.
The file you need is the last one on this page, xlisp21h.zip.
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