Advent of Code 2019

My solutions to all Advent of Code 2019 problems. I did them in Rust to get more familiar with the language. This was the first year I participated. The parts with the IntCoder, simulating a custom CPU-architecture, were so cool and opened up many interesting puzzle-possibilities. I learned a ton and got a lot better at Rust!

Huge thanks to everyone who makes AoC possible!

Usage

To run any of the solutions use the command cargo run --release --bin DAY_NUMBER. All solutions finish in under 100ms on my machine and the total running time of all 50 stars is under 500ms!

You can see the output and wall-clock timing for each solution here.

All years

• 2024 in Rust :crab:
• 2023 in Rust :crab:
• 2022 in Rust :crab:
• 2021 in Rust :crab:
• 2020 in Rust :crab:
• 2019 in Rust :crab:
• 2018 in Python :snake:
• 2017 in Haskell λ
• 2016 in OCaml :camel:
• 2015 in Clojure λ

Leaderboard

I did not attempt to get high leaderboard scores since, in my timezone, I would have to get up very early. I still managed to get around top 1-2k on a lot of the later ones and even 774th on one star. Finished most of them the day they came out.