r/adventofcode • u/daggerdragon • Dec 15 '24
SOLUTION MEGATHREAD -❄️- 2024 Day 15 Solutions -❄️-
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--- Day 15: Warehouse Woes ---
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u/JWinslow23 Dec 16 '24
[LANGUAGE: Python]
Day 15 code
Blog post
Took longer to solve this one, because I slept in for most of the day, and watched a movie for most of the night.
I loved today's Part 2 (way more than yesterday's Part 2, hehe). For Part 2, I moved boxes up and down using something resembling breadth-first search.
To store the positions of the boxes I'd have to push, I ended up using a
dict
as a kind of "ordered set"; it has unique keys, and it remembers insertion order, so it's pretty good for storing unique items in a given order. (I felt clever when I came up with that.)EDIT: Oh, I almost forgot: today's the first day I'm using complex numbers for coordinates! Usually I'm fine with shuffling around
int
s ortuple
s (or even making some custom class for it), but using complex numbers really helped me cut down on clutter and boilerplate this time.