Day 3: Lobby
Megathread guidelines
- Keep top level comments as only solutions, if you want to say something other than a solution put it in a new post. (replies to comments can be whatever)
- You can send code in code blocks by using three backticks, the code, and then three backticks or use something such as https://topaz.github.io/paste/ if you prefer sending it through a URL
FAQ
- What is this?: Here is a post with a large amount of details: https://programming.dev/post/6637268
- Where do I participate?: https://adventofcode.com/
- Is there a leaderboard for the community?: We have a programming.dev leaderboard with the info on how to join in this post: https://programming.dev/post/6631465
My original solution for part 1 was just removing the last digit, get the highest number, cut off everything up to and including that first number, get the highest number again.
Once I did part 2 I realized I can just throw in a loop, cut off parts of the end so there’s enough numbers left for the subsequent iterations and keep the rest the same.
Now it works for any number of batteries and all you’d need to change is the number after
Total!:DOnline pad: AoC-2025-D3
You can even use your own input by uploading a file (make sure it’s using LF line endings only with a trailing one at the end) and replacing the example input with this:
&rs inf &fo "input-file.txt"Code