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 2023

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. [2023 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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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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Ategon@programming.dev

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[2023 Day 3][Requesting Help] What am I doing wrong? (lemmygrad.ml)

submitted 9 months ago by CannotSleep420@lemmygrad.ml to c/advent_of_code@programming.dev

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I know I'm not the only one finding day 3 frustrating.

My current code for day 3 is here. I find the locations of all of the special symbols, check around them to get the numbers, and dedup the list of numbers I find. To make things easier to debug, I generated some supplementary text files. One shows the input I used, but with all of the numbers I used replaced with 'x's: the output doesn't suggest any problems with my code that are obvious. The other has each number that went into the sum on its own line. I checked a few of these numbers and they seemed correct, but there are too many to check by hand.

What could I be doing wrong? I've officially run out of ideas.

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[–] CannotSleep420@lemmygrad.ml 1 points 9 months ago (1 children)

I thought my checked_coord_set already made sure numbers next to more than one symbol were only counted once.

[–] snowe@programming.dev 1 points 9 months ago

If you’re already doing that and you’re deduping the list then you’re doing too much.