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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🍷 - 2024 DAY 3 SOLUTIONS -🍷 (programming.dev)

submitted 3 weeks ago* (last edited 3 weeks ago) by [email protected] to c/[email protected]

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Day 3: Mull It Over

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[–] [email protected] 0 points 3 weeks ago

Uiua

Uses (abuses?) experimental features of fold to track the running state of do/don't state. Although it works well and fast, I don't think I would recommend this code to anyone :-) Try it if you must!

# Experimental!
DataP₁       ← $ xmul(2,4)%&mul[3,7]!@^do_not_mul(5,5)+mul(32,64]then(mul(11,8)mul(8,5))
DataP₂       ← $ xmul(2,4)&mul[3,7]!^don't()_mul(5,5)+mul(32,64](mul(11,8)undo()?mul(8,5))
GetMul       ← $ mul\((\d{1,3}),(\d{1,3})\)
GetMulDoDont ← $ mul\(\d{1,3},\d{1,3}\)|do\(\)|don\'t\(\)

&p/+≡(/×≡⋕↘1)regex GetMul DataP₁ # Part 1

# Build an accumulator to track running state of do/don't
Filter ← ≡⋕↘1◌∧(⍣("0" °"n"|"1" °"("|.◌)) :"1"∵◇⊡2

regex GetMulDoDont DataP₂
▽⊸≡(¬≍"do()"°□⊢)▽⊸Filter     # Apply Filter, remove the spare 'do's
&p/+≡(/×≡⋕↘1⊢regexGetMul°□⊢) # Get the digits and multiply, sum.