My solutions for Advent of Code challenges 2025 in Kotlin (JVM).
Copyright © 2025 by Christian Jaeggi.
Before I start I want to give a big shout-out to Todd Ginsberg whose solutions are very concise as well as idiomatic to read. His repos are always very inspirational! I learned a lot from him.
Also, some solutions are inspired by ClouddJR.
Just use the main class and execute either the appropriate solve functions in the according Day classes or any day
function i.a.
Enjoy!
| Day | Title | Links |
|---|---|---|
| 1 | Secret Entrance | [Code] [AoC] |
| 2 | Gift Shop | [Code] [AoC] |
| 3 | Lobby | [Code] [AoC] |
| 4 | Printing Department | [Code] [AoC] |
| 5 | Cafeteria | [Code] [AoC] |
| 6 | Trash Compactor | [Code] [AoC] |
| 7 | Laboratories | [Code] [AoC] |
| 8 | Playground | [Code] [AoC] |
| 9 | Movie Theater | [Code] [AoC] |
| 10 | Factory | [Code] [AoC] |
| 11 | Reactor | [Code] [AoC] |
| 12 | Christmas Tree Farm | [Code] [AoC] |