Advent of Code Solutions

My personal solutions to Advent of Code challenges, implemented in Elixir.

This repo is built using my open-source elixir_aoc skeleton, which provides a generator for scaffolding each day's solution.

Generator Usage

The skeleton includes a Mix task to generate scaffolding for each day:

mix aoc.gen DAY [--year YEAR]

Running mix aoc.gen 1 will:

• Generate a new module based on the problem title at lib/aoc/year_YYYY/day_DD/problem_title.ex
• Parse the HTML description of the problem into @moduledoc markdown
• Download your unique problem input into priv (requires session token)
• Generate a test file with the problem examples and input loading

Setup

To use the generator, set your Advent of Code session token as an environment variable:

export AOC_SESSION=your_session_token

You can find your session token in your browser's cookies after logging into Advent of Code.

Solutions by Year

• 2017: Day 01
• 2018: Days 01-11
• 2019: Days 01-02
• 2020: Days 01-10
• 2021: Days 01-09, 13, 14, 17
• 2022: Days 01-16
• 2023: Days 01-04
• 2024: Days 01-06
• 2025: ?