This repo contains my solutions to the Advent of Code 2025 set of problems with the Kotlin programming language. Each solution is accompanied by blog post.
I did not use AI of any kind while developing these solutions, or the blog posts associated with them. I don't have issues with AI per se (in fact, I find it quite handy), but I treat Advent of Code as a learning exercise. To quote Eric Wastl, creator of Advent of Code, regarding AI: "If you send a friend to the gym on your behalf, would you expect to get stronger?"
I've been doing this for a few years; here are my past efforts, also in Kotlin:
- 2017 - GitHub and Blog Posts
- 2018 - GitHub and Blog Posts
- 2019 - GitHub and Blog Posts
- 2020 - GitHub and Blog Posts
- 2021 - GitHub and Blog Posts
- 2022 - GitHub and Blog Posts
- 2023 - GitHub and Blog Posts
- 2024 - GitHub and Blog Posts
| Day | Title | Blog Link | Solution Code | Puzzle Text |
|---|---|---|---|---|
| 1 | Secret Entrance | Blog/Commentary | Code | AoC |
| 2 | Gift Shop | Blog/Commentary | Code | AoC |
| 3 | Lobby | Blog/Commentary | Code | AoC |
| 4 | Printing Department | Blog/Commentary | Code | AoC |
| 5 | Cafeteria | Blog/Commentary | Code | AoC |
Copyright © 2025 by Todd Ginsberg.