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feat(sterni/aoc/2022): day08 BQN solution

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Added utility used to be related, but got dropped in a refactor.

Change-Id: I1f88973d6b42f1302b49cd61c53e4cd1e15b8c6f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7553
Autosubmit: sterni <sternenseemann@systemli.org>
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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sterni 2022-12-07 20:13:45 +01:00 • committed by clbot
parent 2afcbbc451
commit 1649799cb7
2 changed files with 16 additions and 0 deletions
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15
users/sterni/exercises/aoc/2022/08/8.bqn Normal file
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i ← >'0'-˜•FLines "input"
Visible ← {
_vis ← {(⌈`∘(¯1⊸»˘⌾⍉)<⊢)⌾𝕏 𝕗}
∨´𝕩 _vis¨ ⟨⊢,⌽,⍉,⌽⍉⟩
}
•Out "day08.1: "∾•Fmt +´⥊Visible i
ViewingDistances ← {
DirView ← {≠1(»⟜(∧`(⊑𝕩)⊸>)/⊢) 1↓𝕩}
_spliceDir ← {! =´≢𝕗 ⋄ 𝕏⁼(⊢↓(⊏⟜(𝕏𝕗))∘⊣)´¨ ⋈⌜˜↕≠𝕗}
×´ DirView¨¨ 𝕩 _spliceDir¨ ⟨⊢, ⌽˘, ⍉, ⌽˘⍉⟩
}
•Out "day08.2: "∾•Fmt ⌈´⥊ViewingDistances i