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 2024

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[2023 Day 6] No optimization needed (programming.dev)

submitted 11 months ago by mac to c/advent_of_code

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[–] [email protected] 3 points 11 months ago (2 children)

Just use dictionaries in Python. Never worry about search performance any more.

[–] [email protected] 11 points 11 months ago* (last edited 11 months ago) (2 children)

I mean, that literally failed just yesterday.

Also I'm not sure where in today's problem you would even use a dictionary

[–] [email protected] 1 points 11 months ago (1 children)

Hey, I haven't been doing Advent this year. What was day 5's problem and why did dicts fail?

[–] [email protected] 3 points 11 months ago (1 children)

There was a series of number ranges that mapped onto other ranges. The simple approach was filling dictionaries, which worked well for the example data. In the actual data, there ranges were much much larger (in the 100,000,000's), which made the dictionaries prohibitively large.

[–] [email protected] 1 points 11 months ago

If each number was 8 bytes wide, it would require, if I didn't mess up my math, 18 GB to fully represent all seeds/numbers as an array.