page = blog :: brent -> [string]
url = https://byorgey.wordpress.com
For Tuesday, I invite you to solve The Power of Substitution . Don’t let the high difficulty rating scare you; in my estimation it should be quite accessible if you know a bit of math and have been following along with some of my previous posts (YMMV). However, it’s not quite as obvious what the nicest way to write it in Haskell is.
For Friday, I invite you to solve Subway Tree System , a nifty problem which is more difficult but has some similar features!
Now that this weird and crazy semester is finally over, I’d like to get back to doing some blogging (among other things). I’m going to return to my series on competitive programming in Haskell (previous posts here: basic setup ; code style and moral absolutes ; Scanner ; ByteString ; primes and factoring ; modular arithmetic 1 ; modular arithmetic 2 ), but following a more hands-on approach: each Tuesday and Friday, I will post a link to a problem (or two), and invite you to try solving it. The following Tuesday or Friday, I will explain my solution (as well as link to another problem for the next post). Sometimes I may develop a topic over several posts; sometimes I may just post random problems that I like.
I invite you to try solving it, and to post your questions, comments, and solutions here! (Fair warning: don’t look at the comments before you’ve solved it if you don’t want spoilers!) On Tuesday I will post my solution with commentary, and another problem for you to try.