My personal solutions to Advent of Code puzzles, written in C#.
This repository is a personal archive, published so the code can be read. It is not a library to depend on and not a project seeking collaborators. Issues and pull requests are not accepted — the repository exists as a record of how I approached each puzzle, and the code changes whenever I feel like changing it.
If you are here to look at a particular day's solution, the fastest route is src/AoC.Solutions/YearXXXX/DayNN.cs.
Everything else in the repository exists to support those files.
Structurally, it is a solution library plus a runner:
| Project | Purpose |
|---|---|
AoC.Core |
An engine that discovers, loads inputs for, and runs puzzle solutions. |
AoC.Solutions |
The puzzle solutions themselves, one class per day. |
AoC.App |
A WPF launcher that discovers all solutions by reflection, runs them, and reports results and timings. |
Advent of Code accumulates fast — 25 puzzles per year, two parts each. A console app forces you to either recompile with a different entry point or parse command-line arguments for every run. The launcher removes that friction: it lists every discovered solution, runs the selected one on demand, colour-codes elapsed time so slow solutions stand out, and links directly to the puzzle page on adventofcode.com.
The design goal was that a new puzzle costs exactly one attributed class and one input file — no registration lists, no
switch statements, no UI changes.
.NET 10
Puzzle inputs are not part of this repository. Advent of Code inputs are generated per user, and Eric Wastl
asks that they not be redistributed — so Inputs/ is excluded via .gitignore.
This means the launcher has nothing to run against on a fresh clone. That is intentional. The solutions are here to be read; reproducing my answers is not the point, and my input would not match yours anyway.
This project is licensed under the MIT License.