I've been doing development for many years -- usually for other people. Since the Palm has a free development environment, I can write the things I want to. This page lists the Palm programs I've written. Feel free to download whatever catches your fancy.Continue reading "Judebert's Palm Pilot Programming" »
Wednesday, January 16. 2013
Today I only studied a little bit. I had too much other stuff to do. But I did manage to find a nice brain teaser from GeeksForGeeks.org.
Imagine a champagne pyramid, but in only two dimensions. Like this:
Level 1: 1 Level 2: 1 2 Level 3: 1 2 3
Of course, we could have as many levels of this "pyramid" as we liked.
All the glasses are the same. When you overfill Level 1 glass 1, the overflow goes half to the left (Level 2 glass 1) and half to the right (Level 2 glass 2). Every time a glass is overfilled, half the overflow goes to the left and half to the right.
Find a method to tell me how much champagne is in any glass, when I tell you how much I poured into the top glass.
For instance, if I say I poured 4 glassfuls, and I want to know about Level 3 glass 3, you'd tell me it had 0.25 glassfuls.Continue reading "Interview Prep Day 2: Studying and Champagne " »
Thursday, November 13. 2008
Serendipity 1.4 just went beta! That means my new upload validation code comes into play.
I developed the code a while ago, when people on the forums were having trouble with corrupted uploads. Some clients were uploading everything in ASCII mode, some were skipping files... it was a nightmare.
The new validation is working, but as more people start testing it, we expect to find the edge cases. Like the installation problem reported on the forum.
Turned out the FTP server was stripping all the linefeeds out of a weird file. I made a PHP application to check your FTP client and server for hiccups like the one that hit rj. You should be able to just unzip it and upload the files to your server; when you visit sumcheck.php, it'll explain what you should be seeing. You can let me know on the forums (or in the comments) if you find anything interesting.
Wednesday, May 7. 2008
I've improved my old multiplication worksheet! The new, improved, online timed math test has all these features:
- Online or printable worksheets!
- Customizable problem sets (Only want to work on the 7 and 8 facts? Yeah, we can do that!)
- All basic math operations, including:
- Subtraction with possible negative results
- Subtraction with only positive results
- Custom worksheet sizes
- Next problem with Tab or Enter (supporting keyboard and 10-key pad)
I'm also working on a Hall of Fame, but I'm worried about crackers. Maybe I could make a Personal Best page, instead...
If you can think of any other features you want, just let me know!
Update 11:30 PM: Now works properly in Internet Explorer!
Wednesday, October 17. 2007
I made this last year, but I needed it again today. It's a printable, customized multiplication worksheet for timed tests. It's set out in rows and columns, which you can customize, therefore changing the number of problems. It also allows you to select a range of number for the top and bottom. If you prefer, you can specify the exact numbers you want to choose from.
By default, it produces one hundred questions with both multiplicands between 0 and 9. Thanks to the way it picks, that means each possible problem will appear exactly once.
However, you can also use it to practice difficult numbers. If you have trouble with the fours and sixes, you can specify the top as "4,6", and it will produce 100 problems that include a four or a six.
Use it and have fun!