Day 9: Disk Fragmenter
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)
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FAQ
- What is this?: Here is a post with a large amount of details: https://programming.dev/post/6637268
- Where do I participate?: https://adventofcode.com/
- Is there a leaderboard for the community?: We have a programming.dev leaderboard with the info on how to join in this post: https://programming.dev/post/6631465
Uiua
Just a port of my Dart solution from earlier really, and it shows, as it takes about 30 seconds on the live data.
(edit: I just noticed the little alien in the code
(⋅⋅∘|⋅∘|∘)which is literally flipping the stack (╯°□°)╯︵ ┻━┻!)How to read this
Try it live!
Data ← "2333133121414131402" FS ← ↙⌊÷2⧻.▽≡⋕:♭⍉⊟⊃(⇡|↯:¯1)⧻.Data # Build up a map of the FS. MoveB ← ⍜(⊡|⋅)⊃(⋅⋅∘|⋅∘|∘) ⊡¯1.:⊢⊚⌕¯1. # Find a space, move block into it. MoveBs ← ⍢(⍢(↘¯1|=¯1⊣)↘¯1MoveB|>0⧻⊚⌕¯1) TryMove ← ⨬(◌|∧⍜⊏⇌⍉)/×/>. MoveFile ← ( ⊃(⊚⌕↯:¯1⧻|∘)⊚⌕⊙.⊙. # get posns from, start posn to. ⨬(◌◌|TryMove ⊟+⊙◌°⊏,⊢)>0⧻. # check posn to is good, swap. ) Check ← /+/×⊟⇡⧻.↥0 &p Check MoveBs FS &p Check ∧MoveFile⇌+1⇡/↥.FS