Advent of Code

My solutions to Advent of Code.

See the aoc-stats repo for a static site generator with extended statistics.

2015

I started out with Bash, but added some Perl to the mix when Bash just took too long.

I tried sticking to pure Bash without too much reliance on command line tools (reason: definitely not performance), but whenever pure Bash really was too slow or cumbersome (day 10, second part for example), I gladly took the multiple orders of improved performance.

2016

Everything in awk, with the odd solution in Perl or Bash and utilities such as grep or sort.

For MD5 hashing, I used an extension from here, written in C.

2017

Perl for speed (everything), Go to learn (first 13 days).

Uploads are "polished", but the oldest commit per file is the honest version used to solve the puzzle.

2018

Perl. First commits per day are the honest truth, afterwards I cleaned up.

2019

I thought "probably Go", but ended up with Perl again for day 1. Then gave up, then came back and did everything in Go[^1].

2020

Mostly awk, and a tiny bit sed.

2021

Node.js[^1], with the first three days also in awk.

[^1]: In progress