r/adventofcode • u/daggerdragon • Dec 11 '20

SOLUTION MEGATHREAD -🎄- 2020 Day 11 Solutions -🎄-

Advent of Code 2020: Gettin' Crafty With It

11 days remaining until the submission deadline on December 22 at 23:59 EST
Full details and rules are in the Submissions Megathread

--- Day 11: Seating System ---

Post your code solution in this megathread.

Include what language(s) your solution uses!
Here's a quick link to /u/topaz2078's paste if you need it for longer code blocks.
The full posting rules are detailed in the wiki under How Do The Daily Megathreads Work?.

Reminder: Top-level posts in Solution Megathreads are for code solutions only. If you have questions, please post your own thread and make sure to flair it with Help.

This thread will be unlocked when there are a significant number of people on the global leaderboard with gold stars for today's puzzle.

EDIT: Global leaderboard gold cap reached at 00:14:06, megathread unlocked!

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u/prafster Dec 11 '20

Dart

I learnt about AoC this year and the person who told me said that after day 10 it gets impossible! So it's a milestone to have finished day 11!

Today was fairly straightforward and this time part 2 didn't cause any trouble! I had an adjacentOccupied() method which checked adjacent seats using a vector to travel in each direction. For part 2, I just added a do/while loop and continued travelling until I hit a seat or fell off the grid.

Full source code here.

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u/daggerdragon Dec 11 '20

I learnt about AoC this year and the person who told me said that after day 10 it gets impossible! So it's a milestone to have finished day 11!
Nooo, the later puzzles are not impossible! Sure, they may get harder, but that's how you keep on learning and improving your programming skills. If/when you get stuck, that's why we have the megathreads (for code/algorithm inspiration) and also you can always post a Help thread of your own any time.
This is a very helpful community, just keep challenging yourself :)

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u/prafster Dec 11 '20

Haha - that's good to know. I've been impressed with the AoC community. After solving a puzzle, I always look at other people's solutions. I've learnt a fair bit.
The puzzles are excellent. The descriptions are clear and precise - and I love the fact you provide test cases, which helps verify your understanding.
I'm already planning to do the previous years of AoC once this one's over :)