Advent Of Code

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An unofficial home for the advent of code community on programming.dev! Other challenges are also welcome!

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.

Everybody Codes is another collection of programming puzzles with seasonal events.

AoC 2025

Solution Threads

M	T	W	T	F	S	S
1	2	3	4	5	6	7
8	9	10	11	12

Visualisations Megathread

Rules/Guidelines

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

Relevant Communities

Relevant Links

Advent of Code Homepage

Credits

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

console.log('Hello World')

founded 2 years ago

MODERATORS

Ategon@programming.dev

Sigmatics@lemmy.ca

CameronDev@programming.dev

hades@programming.dev

Advent of Code 2025 (programming.dev)

submitted 4 weeks ago* (last edited 4 weeks ago) by CameronDev@programming.dev to c/advent_of_code@programming.dev

16 comments fedilink hide all child comments

Hi All,

With a few days remaining until the 2025 kick off, its time to get ready to save Christmas once more!

This year is only 12 days, but that just leaves the rest of the month for refining solutions and visualizations.

I have setup a bot to post the solutions threads, but as traditional AoC code style, it likely wont work most of the month. I'll try keep on top of it. As always, if there is something I can do better, please let me know!

Also, thanks to @hades for running the Everybody.Codes threads, its a thankless task, but its good to diversify the challenges.

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[–] Pyro@programming.dev 8 points 4 weeks ago (2 children)

Will we be using the same programming dot dev private leaderboard as last time?

[–] CameronDev@programming.dev 4 points 4 weeks ago (1 children)

Yup, as far as I know it should still work.

[–] Deebster@infosec.pub 3 points 4 weeks ago (1 children)

It's there and showing 12 days. I'm currently beating you.

[–] CameronDev@programming.dev 1 points 4 weeks ago

I'm the other Cameron, but you are still beating me :(

[–] eco_game@discuss.tchncs.de 3 points 3 weeks ago* (last edited 3 weeks ago)

Is the join code somewhere central / could you share it here?

Edit: My client hides read post, it's literally a pinned post in this community: https://programming.dev/post/6631465