Advent Of Code

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An unofficial home for the advent of code community on programming.dev!

Advent of Code is an annual Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like.

AoC 2024

Solution Threads

M	T	W	T	F	S	S
						1
2	3	4	5	6	7	8
9	10	11	12	13	14	15
16	17	18	19	20	21	22
23	24	25

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Follow the programming.dev instance rules
Keep all content related to advent of code in some way
If what youre posting relates to a day, put in brackets the year and then day number in front of the post title (e.g. [2024 Day 10])
When an event is running, keep solutions in the solution megathread to avoid the community getting spammed with posts

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Advent of Code Homepage

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Icon base by Lorc under CC BY 3.0 with modifications to add a gradient

console.log('Hello World')

founded 1 year ago

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How are there submissions that are under 90 seconds? (midwest.social)

submitted 2 weeks ago by [email protected] to c/advent_of_code

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I was looking through the global leader board for day 3 today and noticed that the first 100 results are all under 90 seconds, with the top 4 being under 30 seconds. How is that possible? What are people leveraging in order to accomplish this?

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[–] [email protected] 9 points 2 weeks ago

See for yourself! This is someone solving day 1 of this year:

https://youtu.be/ym1ae-vBy6g?si=jbjfMMsxMveKrbLS

If you're really going for it, you can automate some of the busy work like getting the input file and a template that's ready to read it in and split it into lines, then it's mostly a matter of skimming for what to do and knowing how to zip/map/fold/reduce/etc the data quickly. I was a bit surprised to see him having to add imports to his file, I'd think he'd have those ready to go, and of course quitting out of Vim to run the script isn't necessary either, but I can't judge because I definitely do that too...