Advent of Code

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Advent of Code (AoC) is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language. This page catalogues efforts by users to solve these puzzles in APL. Feel free to add more, including your own.

The solutions can be used as references for solving the puzzles, or just a general way to hone your APL skills.

Adám Brudzewsky's video on parsing text files, useful for solving Advent of Code problems.

At the end of AoC 2021, Adám Brudzewsky published an informational video[1] with companion code[2] to parse text files that are similar to many common input formats given by AoC.

There is also a leaderboard for APLers, the code is 656501-67f7cded.

Individuals' solutions

Author 2015 2016 2017 2018 2019 2020 2021 2022
Andrea Piseri code
C. Quilley code
Conor Hoekstra videos
Duncan Regan code code
Isaac Wooden code code code
Jack Franklin code
Jon Mikoš code
Jay Foad code code code code code code
Lavender code
Matthew Maycock code
Max Rothman code
Mihaly Barasz code
Mitchell Johnstone code
Nathan Rogers code code code
Nick Nickolov code
Patrick Ocana Bruno code
pitr code code
Raghu Ranganathan code
Rich Park code code code
Rory Kemp code code code
schatzmeister code
Stefan Kruger notebook notebook notebook notebook notebook notebook code code
Steve Allen code
Woosuk Kwak code


  1. Brudzewsky, Adám. Parsing content from text files using Dyalog APL's ⎕CSV. Adám's APL. YouTube. 2021-12-23.
  2. Brudzewsky, Adám. parsing. abrudz. GitHub. 2021-12-23.
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