Solutions for Advent of Code
Anders Englöf Ytterström
7b2b101b8b
Pt 1 was easy, Pt 2 was pure horror. Earlier drafts of the code tried to be way too smart. At one point, I just came to the conclusion to place a new obstacle (#) on the grid and just rerun the thing to look for loops. 2 things: - the visited positions from pt 1 can be used as a subset for positions to consider for the extra "#". - The track of loops can be optimized to look at bounces on "#"s instead of each individual y,x pos, given that the direction is remembered. pt 2 is familiar, the last time a puzzle required look detection the puzzle used lazer beams and reflectors. Not sure what Event or day it was. |
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| 2015-elixir | ||
| 2015-elixir-2 | ||
| 2015-python | ||
| 2016-python | ||
| 2016-python2 | ||
| 2017-python | ||
| 2018-elixir | ||
| 2018-python | ||
| 2019-elixir | ||
| 2020-elixir | ||
| 2020-python | ||
| 2021-elixir | ||
| 2021-python | ||
| 2022-elixir | ||
| 2023-python | ||
| 2024-python | ||
| leaderboard | ||
| .gitignore | ||
| fetch-calendar | ||
| fetch-input | ||
| README.md | ||
Advent of Code 2015–
Here all solved puzzles for Advent of Code are kept for reference. Most solutions are written in Python, but there are also solutions written in Elixir.
- Initial runs from 2016–2020 are squashed in version control, so the original thoughts/rants about the solution are forgotten for future generations.
- 2021 onwards, each solution will have a separate commit. This also includes revisiting old events.
Where are the puzzle input files?
For many years, this repository had all puzzle inputs under version control. They are not anymore, although the scripts asumed they are downloaded and stored locally in a subdirectory, which is ignored by version control.
The reasons:
- Neither you or me do have permission to reproduce or redistribute them, they are not released under public domain or MIT/BSD/GPL or any other license.
- The author behind advent of code have kindly asked us who attend Advent of Code to not release them, since publiced puzzle inputs cen be used to copy the site and steal the AoC creator's work.
Sources: