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bqn poking

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rhiannon morris 2022-12-21 18:02:25 +01:00
parent 26b649080e
commit 39c89ada3d
1 changed files with 4 additions and 4 deletions
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aoc.bqn
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@ -2,12 +2,12 @@
Sub ⇐ {a‿b𝕊𝕩:b↑a↓𝕩}
# e Split xs: split xs on occurrences of e (default 0)
Split ⇐ {(⊏ ∾ 1⊸↓¨∘(1⊸↓)) Sub⟜𝕩¨ (» ⋈¨ ⊢-») /w=𝕩∾(w←𝕨⊣0)}
Split ⇐ {(⊏ ∾ 1⊸↓¨∘(1⊸↓)) Sub⟜𝕩¨ (» ⋈¨ ⊢-») /w⊸≡¨𝕩∾w←𝕨⊣0}
# n Chunk xs: split into chunks of length n (the last one might be smaller)
Chunk ⇐ {(⌊𝕨÷˜↕≠𝕩)⊔𝕩}
Day1 ⇐ (⊑ ⋈ (+´3⊸↑))∘(∨+´¨)∘Split∘(•BQN⎊0¨)∘•FLines
Day1 ⇐ {(⊑ ⋈ (+´3⊸↑)) ∨+´¨ •BQN⚇1 "" Split •FLines 𝕩}
# ⟨ 72602 207410 ⟩
Day2 ⇐ {
@ -68,8 +68,8 @@ Day10 ⇐ {
# (but the string is a big banner)
Day18 ⇐ { # part 1 only :[
grid ← (↕∘> 1+⌈˝)⊸∊ •BQN¨ '‿'⍟(=⟜',')⚇0 •FLines 𝕩
touch ← +´⥊ «‿» {∧⟜(𝕎⎉𝕩) grid}⌜ 1+↕3
grid ← (↕∘> 1+⌈´)⊸∊ •BQN¨ '‿'⍟(=⟜',')⚇0 •FLines 𝕩
touch ← +´⥊ «‿» {(𝕎⎉𝕩)⊸∧grid}⌜ 1+↕3
+´⥊ (6×grid)-touch
}
# 3470