🎄 Advent of Code 2025

	Problem	Solution	Execution time	Lines of code	Finished
Day 1	Problem 1	day01.rs	21.391 µs + 2.7970 ms	60	✓
Day 2	Problem 2	day02.rs	176.77 ms + 206.82 ms	42	✓
Day 3	Problem 3	day03.rs	106.74 µs + 160.37 µs	45	✓
Day 4	Problem 4	day04.rs	319.14 µs + 9.5692 ms	38	✓
Day 5	Problem 5	day05.rs	57.490 µs + 47.808 µs	60	✓
Day 6	Problem 6	day06.rs	107.38 µs + 115.66 µs	87	✓
Day 7	Problem 7	day07.rs	110.86 µs + 80.175 µs	45	✓
Day 8	Problem 8	day08.rs	32.984 ms + 59.031 ms	80	✓
Day 9	Problem 9	day09.rs	218.52 µs + 307.47 ms	160	✓
Day 10	Problem 10	day10.rs	235.69 ms + 266.41 ms	86	✓
Day 11	Problem 11	day11.rs	188.19 µs + 185.73 µs	49	✓
Day 12	Problem 12	day12.rs	194.77 µs + 382.47 ps	67	✓

The benchmarks are measured (non-scientifically) with cargo-criterion on a AMD Ryzen 5 3600 Desktop. More in the benchmarks section. The lines of code are measured using ghloc, excluding comments and empty lines.

Install Rust

If you don't have Rust installed (how dare you) just run this:

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

If you are not using a Unix-like OS, check the instructions here

Usage

Clone

git clone https://github.com/MrRobb/advent-of-code-2025.git
cd advent-of-code-2025

Build

cargo build --release

Run

Run all

cargo run --release

Run a specific day

cargo run --release --bin day01

Benchmarks

Install Criterion

To run the benchmarks you need to install cargo-criterion first:

cargo install cargo-criterion

Run benchmarks

Once you have Criterion installed, you can run the benchmarks with:

cargo criterion