2025-advent-of-code

Repository for the Advent of Code 2025 challenges

Each day, advent of code presents a challenge for those of brave heart to complete. This repo contains my answers to the 2025 version of advent of code, not all challenges have been completed. I complete AoC to get familiar with a technology, its build tools and testing tools, it's kind of a mini-production type workflow I follow.

In this year I chose to use the following tools:

• Ruby v3.4.7. Language for this years AOC solutions.
• Rake v13.3.1.
• Minitest v5.26.1. Unit test framework
• Rubocop v1.81.7. Linter
• pre-commit v0.40.0
• debase v0.2.9. Used for debugging

All development is completed using VS Code with the Ruby LSP plugin installed.

Setup

Firstly install dependencies

╰─❯ bundler install

Then install the pre-commit hooks.

╰─❯ pre-commit install

The environment is now setup and ready to go.

Testing

To run all the tests:

╰─❯ rake test

To run a single test file:

╰─❯ rake test TEST=test/day_00/test_task_02.rb

Committing

The pre-commit hook should kick-in, when it does it will lint and prettify the code.

╰─❯ git add --all
╰─❯ git commit -a

Progress

	Challenge	Task 1	Task 2
Day 01	Secret Entrance	🌟	🌟
Day 02	Gift Shop	🌟	🌟
Day 03	Lobby	🌟	🌟
Day 04	Printing Department	🌟	🌟
Day 05	Cafeteria	🌟	🌟
Day 06	Trash Compactor	🌟	🌟
Day 07	Laboratories	🌟
Day 08	Playground	🌟	🌟
Day 09	Movie Theater	🌟
Day 10
Day 11
Day 12