Programming Puzzles? What's your favorite puzzle?

[Ian Kelly]

On Thu, Aug 12, 2010 at 5:41 AM, Matty Sarro <msarro at gmail.com> wrote:
> Hey All!
> Hope your thursday is treating you well. I'm looking for suggestions on
> books of programming/engineering puzzles that range from beginners to
> advanced and even expert level problems. I know they exist; we had them back
> in college for practicing before the ACM programming competitions. However I
> can't seem to really find any books out there that look like they're what
> I'm seeking. Basically I haven't programmed a lot since I was in college,
> and that was about 9 years ago. I'm expected to do a bit more programming at
> my current job and I figure the best way to get back into things is to have
> some practical things to solve, and maybe have a bit of fun in the process.
>
> Anyone have any suggestions?

http://www.spoj.pl/
http://www.codechef.com/

Many of the problems at those sites are difficult in Python due to the
time constraints, but they're well worth checking out.

Cheers,
Ian