🎄🎄🎄 Advent of Code 2025 🎄🎄🎄

Solutions to Advent of Code 2025 implemented in Rust.

Online solutions runner: https://aoc.cadi.ac/

Installing

Follow Rust installation instructions.

Running the solutions

The project is split into separate binaries within one cargo project.

You can run individual solutions with

$ cargo run -- --day 1 --year 2025

or using custom inputs with

$ cargo run -- --day 1 --year 2025 --file inputs/2025/day01.txt

All solutions of the current year can be run using defaults inputs from inputs/ directory with

$ cargo run

Single day's tests can be run with

$ cargo test --workspace -- y2025::day01::tests

or all tests with

$ cargo test --workspace

within the project's root directory.

Benchmarking

You can run all benchmarks within aoc-solver directory with

$ cargo bench

Individual day benchmarks can be run using

cargo bench -- day-1 --exact

Running the web project

This repository now also ships with a small web tool, https://aoc.cadi.ac/ to run the solutions online.

To get started with local web development environment start by adding wasm32-unknown-unknown toolchain:

$ rustup target add wasm32-unknown-unknown

Then install trunk

$ cargo install --locked trunk

and within the aoc-web directory start the local development server with

$ trunk serve

This should start the server at localhost:8080.

Solutions

❄️ Day 01 ❄️ Day 02 ❄️ Day 03 ❄️ Day 04 ❄️ Day 05