🎄 Advent of Code 2022

Solutions for Advent of Code in Rust.

All solutions marked with ⭐ run in under 1ms in release mode (on my machine, your experience may vary). Solutions marked ✨ take longer than that.

Day	Part 1	Part 2
Day 1	⭐	⭐
Day 2	⭐	⭐
Day 3	⭐	⭐
Day 4	⭐	⭐
Day 5	⭐	⭐
Day 6	⭐	⭐
Day 7	⭐	⭐
Day 8	⭐	⭐
Day 9	⭐	⭐
Day 10	⭐	⭐
Day 11	⭐	✨ 1.1 ms
Day 12	✨ 24 ms	✨ 22 ms
Day 13	⭐	⭐
Day 14	⭐	✨ 2.9 ms
Day 15	⭐	✨ 20 ms
Day 16
Day 17
Day 18	⭐	✨ 1.9 ms
Day 19
Day 20	✨ 40 ms	✨ 645 ms
Day 21	⭐	✨ 25 ms
Day 22	⭐
Day 23	✨ 4.8 ms	✨ 575 ms
Day 24
Day 25	✨ 12 ms

---

Usage

Scaffold a day

# example: `cargo scaffold 1`
cargo scaffold <day>

# output:
# Created module "src/bin/01.rs"
# Created empty input file "src/inputs/01.txt"
# Created empty example file "src/examples/01.txt"
# ---
# 🎄 Type `cargo solve 01` to run your solution.

Individual solutions live in the ./src/bin/ directory as separate binaries.

Every solution has unit tests referencing its example file. I yse these unit tests to develop and debug my solution against the example input.

Download input for a day

Note
This command requires installing the aoc-cli crate.

# example: `cargo download 1`
cargo download <day>

# output:
# Downloading input with aoc-cli...
# Loaded session cookie from "/home/felix/.adventofcode.session".
# Downloading input for day 1, 2022...
# Saving puzzle input to "/tmp/tmp.MBdcAdL9Iw/input"...
# Done!
# ---
# 🎄 Successfully wrote input to "src/inputs/01.txt"!

To download inputs for previous years, append the --year/-y flag. (example: cargo download 1 --year 2020)

Puzzle inputs are not checked into git. Reasoning.

Run solutions for a day

# example: `cargo solve 01`
cargo solve <day>

# output:
#     Running `target/debug/01`
# 🎄 Part 1 🎄
#
# 6 (elapsed: 37.03µs)
#
# 🎄 Part 2 🎄
#
# 9 (elapsed: 33.18µs)

solve is an alias for cargo run --bin. To run an optimized version for benchmarking, append the --release flag.

Displayed timings show the raw execution time of the solution without overhead (e.g. file reads).

Run all solutions

cargo all

# output:
#     Running `target/release/advent_of_code`
# ----------
# | Day 01 |
# ----------
# 🎄 Part 1 🎄
#
# 0 (elapsed: 170.00µs)
#
# 🎄 Part 2 🎄
#
# 0 (elapsed: 30.00µs)
# <...other days...>
# Total: 0.20ms

all is an alias for cargo run. To run an optimized version for benchmarking, use the --release flag.

Total timing is computed from individual solution timings and excludes as much overhead as possible.

Run all solutions against the example input

cargo test

To run tests for a specific day, append --bin <day>, e.g. cargo test --bin 01. You can further scope it down to a specific part, e.g. cargo test --bin 01 part_one.

Format code

cargo fmt

Lint code

cargo clippy