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https://github.com/timvisee/advent-of-code-2021
🎄 My Advent of Code solutions in Rust. http://adventofcode.com/2021
https://github.com/timvisee/advent-of-code-2021
advent-of-code advent-of-code-2021 aoc aoc2021 rust
Last synced: 7 days ago
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🎄 My Advent of Code solutions in Rust. http://adventofcode.com/2021
- Host: GitHub
- URL: https://github.com/timvisee/advent-of-code-2021
- Owner: timvisee
- License: gpl-3.0
- Created: 2021-11-30T12:42:16.000Z (about 3 years ago)
- Default Branch: master
- Last Pushed: 2024-12-01T10:22:09.000Z (23 days ago)
- Last Synced: 2024-12-09T15:40:20.333Z (15 days ago)
- Topics: advent-of-code, advent-of-code-2021, aoc, aoc2021, rust
- Language: Rust
- Homepage:
- Size: 238 KB
- Stars: 239
- Watchers: 15
- Forks: 18
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- Funding: .github/FUNDING.yml
- License: LICENSE
Awesome Lists containing this project
README
# Advent of Code 2021 in Rust
My [Advent of Code 2021][aoc-2021] 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:
- https://timvisee.com/blog/solving-aoc-2020-in-under-a-second/
- https://github.com/timvisee/advent-of-code-2020
## Timings
Here is how long each solution runs. All solutions are measured (non
scientifically) in [`bench.rs`](./runner/src/bin/bench.rs) on an
`AMD Ryzen 9 5900X (24) @ 3.7GHz` machine running Linux.
| | part A | part B |
|:-----------------------------------------------|:------------------------------------|:------------------------------------|
| [day 1](https://adventofcode.com/2021/day/1) | [` 0.025ms`](./day01a/src/main.rs) | [` 0.024ms`](./day01b/src/main.rs) |
| [day 2](https://adventofcode.com/2021/day/2) | [` 0.024ms`](./day02a/src/main.rs) | [` 0.025ms`](./day02b/src/main.rs) |
| [day 3](https://adventofcode.com/2021/day/3) | [` 0.021ms`](./day03a/src/main.rs) | [` 0.023ms`](./day03b/src/main.rs) |
| [day 4](https://adventofcode.com/2021/day/4) | [` 0.075ms`](./day04a/src/main.rs) | [` 0.106ms`](./day04b/src/main.rs) |
| [day 5](https://adventofcode.com/2021/day/5) | [` 0.110ms`](./day05a/src/main.rs) | [` 0.220ms`](./day05b/src/main.rs) |
| [day 6](https://adventofcode.com/2021/day/6) | [` 0.0027ms`](./day06a/src/main.rs) | [` 0.0028ms`](./day06b/src/main.rs) |
| [day 7](https://adventofcode.com/2021/day/7) | [` 0.013ms`](./day07a/src/main.rs) | [` 0.013ms`](./day07b/src/main.rs) |
| [day 8](https://adventofcode.com/2021/day/8) | [` 0.008ms`](./day08a/src/main.rs) | [` 0.026ms`](./day08b/src/main.rs) |
| [day 9](https://adventofcode.com/2021/day/9) | [` 0.012ms`](./day09a/src/main.rs) | [` 0.036ms`](./day09b/src/main.rs) |
| [day 10](https://adventofcode.com/2021/day/10) | [` 0.011ms`](./day10a/src/main.rs) | [` 0.015ms`](./day10b/src/main.rs) |
| [day 11](https://adventofcode.com/2021/day/11) | [` 0.019ms`](./day11a/src/main.rs) | [` 0.039ms`](./day11b/src/main.rs) |
| [day 12](https://adventofcode.com/2021/day/12) | [` 0.015ms`](./day12a/src/main.rs) | [` 0.272ms`](./day12b/src/main.rs) |
| [day 13](https://adventofcode.com/2021/day/13) | [` 0.038ms`](./day13a/src/main.rs) | [` 0.044ms`](./day13b/src/main.rs) |
| [day 14](https://adventofcode.com/2021/day/14) | [` 0.007ms`](./day14a/src/main.rs) | [` 0.008ms`](./day14b/src/main.rs) |
| [day 15](https://adventofcode.com/2021/day/15) | [` 1.05 ms`](./day15a/src/main.rs) | [` 37.7 ms`](./day15b/src/main.rs) |
| [day 16](https://adventofcode.com/2021/day/16) | [` 0.002ms`](./day16a/src/main.rs) | [` 0.007ms`](./day16b/src/main.rs) |
| [day 17](https://adventofcode.com/2021/day/17) | [` 0.0002ms`](./day17a/src/main.rs) | [` 0.095ms`](./day17b/src/main.rs) |
| [day 18](https://adventofcode.com/2021/day/18) | [` 0.141ms`](./day18a/src/main.rs) | [` 2.61 ms`](./day18b/src/main.rs) |
| [day 19](https://adventofcode.com/2021/day/19) | [` 1.03 ms`](./day19a/src/main.rs) | [` 1.03 ms`](./day19b/src/main.rs) |
| [day 20](https://adventofcode.com/2021/day/20) | [` 0.042ms`](./day20a/src/main.rs) | [` 3.10 ms`](./day20b/src/main.rs) |
| [day 21](https://adventofcode.com/2021/day/21) | [` 0.0008ms`](./day21a/src/main.rs) | [` 0.016ms`](./day21b/src/main.rs) |
| [day 22](https://adventofcode.com/2021/day/22) | [` 0.083ms`](./day22a/src/main.rs) | [` 1.74 ms`](./day22b/src/main.rs) |
| | one-by-one (1 CPU core) | parallel |
|:-------------|:-----------------------------------------|:---------------------------------------------|
| _everything_ | [`50.36 ms`](./runner/src/bin/runner.rs) | [`39.53ms`](./runner/src/bin/runner-par.rs) |
## Run solutions
Each Rust project contains a `input.txt` file, holding the puzzle input. Simply
run the project to see the solution appear.
```bash
# 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.
## Other years
- [2024](https://github.com/timvisee/advent-of-code-2024)
- [2023](https://github.com/timvisee/advent-of-code-2023)
- [2022](https://github.com/timvisee/advent-of-code-2022)
- [2021](https://github.com/timvisee/advent-of-code-2021) _(current)_
- [2020](https://github.com/timvisee/advent-of-code-2020)
- [2019](https://github.com/timvisee/advent-of-code-2019)
- [2018](https://github.com/timvisee/advent-of-code-2018)
- [2017](https://github.com/timvisee/advent-of-code-2017)
## License
This project is released under the GNU GPL-3.0 license.
Check out the [LICENSE](LICENSE) file for more information.
[aoc-2021]: https://adventofcode.com/2021