Advent of Code 2022 in Rust

My Advent of Code 2022 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).

Previous year I did the same, solving everything in under a second:

Timings

Here is how long each solution runs. 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	`0.027 ms`	`0.031 ms`
day 2	`0.006 ms`	`0.006 ms`
day 3	`0.015 ms`	`0.016 ms`
day 4	`0.040 ms`	`0.039 ms`
day 5	`0.020 ms`	`0.019 ms`
day 6	`0.001 ms`	`720 ns`
day 7	`0.008 ms`	`0.011 ms`
day 8	`0.045 ms`	`0.177 ms`
day 9	`0.120 ms`	`0.290 ms`
day 10	`0.001 ms`	`0.003 ms`
day 11	`0.019 ms`	`5.72 ms`
day 12	`0.294 ms`	`51.22 ms`
day 13	`0.238 ms`	`0.277 ms`
day 14	`0.226 ms`	`6.14 ms`
day 15	`0.003 ms`	`16.19 ms`

	one-by-one (1 CPU core)	parallel
everything	`81.32 ms`	`51.86 ms`

Run solutions

Each Rust project contains a input.txt file, holding the puzzle input. Simply run the project to see the solution appear.

# Switch to day 1a, and run it
cd day01a
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.