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2024 day 4 part 2 faster and cleaner

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Dimitri Lozeve 2024-12-04 21:21:06 +01:00
parent e65fcb1e68
commit 1412646bd1
1 changed files with 3 additions and 3 deletions
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6
2024/day04/day04.bqn
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@ -7,6 +7,6 @@ na←+´+´∘⥊¨"XMAS"⊸⍷¨a
nd←+´+´¨"XMAS"⊸⍷¨d
•Show na+nd
idxs←(⥊↕¯2+≢in)+⌜↕3‿3
Diags←0‿0⊸⍉¨ ⌽∘⍉⍟0‿1
•Show +´{∧´(Diags𝕩⊑in)∊"MAS"‿"SAM"}˘idxs
d1←2⊸⥊¨3⥊↕3
d2←⌽⊸(∾¨)↕3
•Show +´⥊∧˝∊⟜"MAS"‿"SAM"˘⊑⟜in¨d1‿d2+⟜<⌜↕¯2+≢in