Advent of Code 2023 in Rust

My Advent of Code 2023 solutions in the Rust programming language. This repository holds a separate Rust project for each day and part.

I attempt to develop a standalone, elegant, compact and fast solution for each problem (two each day).

Two years ago I did the same, solving everything in under a second:

• https://timvisee.com/blog/solving-aoc-2020-in-under-a-second/
• https://github.com/timvisee/advent-of-code-2021
• https://github.com/timvisee/advent-of-code-2020

Timings

Here is how long each solution runs with my input. All solutions are measured (non scientifically) in bench.rs on an AMD Ryzen 9 5900X (24) @ 3.7GHz machine running Linux.

	part A	part B
day 1	0.016 ms	0.028 ms
day 2	0.011 ms	0.016 ms
day 3	0.019 ms	0.018 ms
day 4	0.017 ms	0.017 ms
day 5	0.015 ms	0.034 ms
day 6	0.001 ms	0.001 ms
day 7	0.065 ms	0.066 ms
day 8	0.028 ms	0.122 ms
day 9	0.042 ms	0.042 ms
day 10	0.048 ms	0.095 ms
day 11	0.012 ms	0.008 ms

	one-by-one (1 CPU core)	parallel
everything	0.77 ms	0.32 ms

Run solutions

Each Rust project needs a input.txt file to run, holding the puzzle input. Simply create this file with your input and run the project to see the solution appear.

# Switch to day 1a, add input, and run it
cd day01a
nano input.txt
cargo +nightly run --release

# or run everything in parallel
cd ../runner
cargo +nightly run --release --bin runner-par

# or benchmark every day
cd ../runner
cargo +nightly run --release --bin bench

Some solutions require Rust Nightly, that's why +nightly is included.

Sadly I cannot include my puzzle input anymore to make each solution easily runnable as per Advent of Code FAQ:

If you're posting a code repository somewhere, please don't include parts of Advent of Code like the puzzle text or your inputs.

Other years

• 2024
• 2023 (current)
• 2022
• 2021
• 2020
• 2019
• 2018
• 2017

License

This project is released under the GNU GPL-3.0 license. Check out the LICENSE file for more information.