Kotlin Multiplatform utility library with battle-tested, zero-dependency implementations of algorithms and data structures for competitive programming and Advent of Code 🎄🧑‍💻

My Advent of Code entries

[MIRROR OF https://forge.koenoostveen.nl/koen/advent-of-code] My personal Advent of Code solutions

My solutions to AoC puzzles in Kotlin.

My advent of code solutions

Because the old one got cursed by Satan or something

\,,,/

Advent of Code

My solutions to advent of code challenges (the ones I have saved)

My solutions for the annual Advent of Code. Past years are accessible via different branches.

https://adventofcode.com/

Advent of Code 2025 Visuals

Advent of Code!

My https://adventofcode.com/ solutions

My competitive programming Kotlin solutions: Advent of Code, Codeforces, etc

Fredrik's solutions to Advent Of Code

My solutions in Kotlin to the Advent of Code puzzles

Advent of Code in Kotlin - all events