6

🏃 - 2024 DAY 18 SOLUTIONS - 🏃

posted
by
Avatar
CameronDev@programming.devM
in
Avatar
advent_of_code@programming.dev
22 comments
hidereport

Day 18: Ram Run

Megathread guidelines

  • Keep top level comments as only solutions, if you want to say something other than a solution put it in a new post. (replies to comments can be whatever)
  • You can send code in code blocks by using three backticks, the code, and then three backticks or use something such as https://topaz.github.io/paste/ if you prefer sending it through a URL

FAQ

Sort:
HotTopControversialNewOld
You are viewing a single thread.
View all comments
Avatar
mykl@lemmy.world
2 points
*

Uiua

I didn’t think I could do this in Uiua this morning, but I gave it some thought while walking the dog and managed to wrangle the data into shape tonight. I factored out the binary chop as that seems like another useful tool to have up my sleeve.

EDIT: goddammit, Kai literally snuck a new RC release out just after I posted this, with a breaking change to how path works. Updated version below.

Try it here!

Data  ← ≡◇(⊜⋕⊸≠@,)°/$"_\n_" "5,4\n4,2\n4,5\n3,0\n2,1\n6,3\n2,4\n1,5\n0,6\n3,3\n2,6\n5,1\n1,2\n5,5\n2,5\n6,5\n1,4\n0,4\n6,4\n1,1\n6,1\n1,0\n0,5\n1,6\n2,0"
End   ← 6_6
Count ← 12

D₄      ← [1_0 ¯1_0 0_1 0_¯1]
Valid   ← ▽¬⊸∊:▽⊸(≡/××⊃(≤⊢End|≥0))+D₄¤
BestLen ← ⍣(-1⧻⊢path(Valid|≍End)0_0↙:Data|∞)
Chop!   ← ◌⍢(⨬(⊙◌+1|⊙⊙◌:):⟜^0⌊÷2+,,|>)

&p BestLen Count
&p/$"_,_"⊏:Data-1Chop!(=∞BestLen)Count ⧻Data
spoiler
permalink
report
reply

Advent Of Code

!advent_of_code@programming.dev

Create post

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

Solution Threads

M T W T F S S
1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25

Rules/Guidelines

  • Follow the programming.dev instance rules
  • Keep all content related to advent of code in some way
  • If what youre posting relates to a day, put in brackets the year and then day number in front of the post title (e.g. [2024 Day 10])
  • When an event is running, keep solutions in the solution megathread to avoid the community getting spammed with posts

Relevant Communities

Relevant Links

Credits

Icon base by Lorc under CC BY 3.0 with modifications to add a gradient

console.log('Hello World')

Community stats

  • 483

    Monthly active users

  • 108

    Posts

  • 1.1K

    Comments

Community moderators