dimitri/advent-of-code
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

2024 day 6

Browse source
This commit is contained in:
Dimitri Lozeve 2024-12-07 00:20:26 +01:00
parent 45653f84c7
commit 829f92b899
3 changed files with 155 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

15
2024/day06/day06.bqn Normal file
View file

@ -0,0 +1,15 @@
in←>•FLines"input"
map←'#'=in
i‿j←⊑¨/¨(∨´˘⋈∨˝)'^'=in
Move←{𝕊map‿i‿j‿v:
p←⌽/i↑j⊏˘map
newi←{0<≠p ? 1+⊑p ; ¯1}
v↩1¨⌾((∾⟜j¨1+newi+↕i-newi)⊸⊑)v
⟨⌽∘⍉map,(≠map)-j+1,newi,⌽∘⍉v⟩
}
•Show +´⥊3⊑Move•_while_(0≤2⊸⊑)⟨map,i,j,(≢map)⥊0⟩
candidates←≢⟜i‿j¨⊸/⥊↕≢map
Stop←{𝕊map‿i‿j‿v: ((i‿j⊑v)∧(¬⟨i-1,j⟩⊑v)∨(¬⟨i+1,j⟩⊑v))∨j<0}
•Show +´{0≤2⊑Move•_while_(¬Stop)⟨1⌾(𝕩⊸⊑)map,i,j,(≢map)⥊0⟩}¨candidates