Advent Of Code

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An unofficial home for the advent of code community on programming.dev! Other challenges are also welcome!

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.

Everybody Codes is another collection of programming puzzles with seasonal events.

EC 2025

AoC 2025

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console.log('Hello World')

founded 3 years ago

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🛜 - 2024 DAY 8 SOLUTIONS -🛜 (programming.dev)

submitted 2 years ago by CameronDev@programming.dev [M] to c/advent_of_code@programming.dev

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Day 8: Resonant Collinearity

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[–] mykl@lemmy.world 2 points 2 years ago* (last edited 2 years ago)

Uiua

Getting closer to an elegant solution, but still a way to go...

How to read this

Try it live!

Grid      ← ⊜∘⊸≠@\n "............\n........0...\n.....0......\n.......0....\n....0.......\n......A.....\n............\n............\n........A...\n.........A..\n............\n............"
Pairs     ← ∧(⊂⧅≠2⊚⌕)⊙¤⊸(◴▽⊸≠@.♭)Grid[] # get pairs of nodes in grid (both ways round).
InGrid    ← ▽≡/××<⧻Grid:≥0..            # (posns) Keeps those in range.
AntiNodes ← ↯∞_2≡(+¤⊙(×¤)⊃⊣/-):¤        # (range, pairs) Find antinodes by taking offset, mul by range, add to last node, check it's in grid.
&p ⧻InGrid◴ AntiNodes ↘1⇡2 Pairs
&p ⧻InGrid◴ AntiNodes ↘0⇡50 Pairs

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