139 lines
4.1 KiB
BQN
139 lines
4.1 KiB
BQN
ReadInt ⇐ (+ ⟜ (10⊸×))´ ∘ (-⟜'0') ∘ ⌽
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IntFile ⇐ ReadInt¨ •FLines
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aoc1 ⇐ {
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A ⇐ +´ ∘ (>⟜(∞⊸»)) ∘ IntFile
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B ⇐ +´ ∘ (>⟜(∞⊸»)) ∘ (+´˘) ∘ (3⊸↕) ∘ IntFile
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}
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################################################################################
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Split ⇐ ((+`׬) - ⊢)∘= ⊔ ⊢ # from bqn crates lmao
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Words ⇐ ((0≠≠)¨⊸/) ∘ (' '⊸Split)
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CSV ⇐ ','⊸Split
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CSVInt ⇐ ReadInt¨ CSV
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aoc2 ⇐ {
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Move1 ← { "forward" 𝕊 x: x‿0; "down" 𝕊 y: 0‿y; "up" 𝕊 y: ⟨0,-y⟩ }
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Move ← Move1⟜ReadInt´ ∘ Words
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MoveFile ← Move¨ ∘ •FLines
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DoMoveB ← {dx‿da 𝕊 x‿y‿a : ⟨x+dx, y+(dx×a), a+da⟩}
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A ⇐ ×´ +´ ∘ MoveFile
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B ⇐ ×´ ∘ (2⊸↑) ∘ (0‿0‿0⊸(DoMoveB´)∘⌽) ∘ MoveFile
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}
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################################################################################
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FromBin ⇐ +´ 2⊸⋆∘↕∘≠ × ⌽
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BitFile ⇐ (-⟜'0') ∘ > ∘ •FLines
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aoc3 ⇐ {
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Most ← ⊑ ∘ ((⍒⊒) ⊸ ⊏)
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Gamma ← Most˘ ∘ ⍉ ∘ BitFile
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A ⇐ ¬⊸(×○FromBin) ∘ Gamma
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B ⇐ {"nah"!0, 𝕩}
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}
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################################################################################
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aoc4 ⇐ {
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BingoFile ← {
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lines ← •FLines 𝕩
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picks ⇐ CSVInt ⊑lines
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boards ⇐ ReadInt¨ > Words¨ 1⊸↓˘ ∘‿6 ⥊ 1↓lines
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states ⇐ boards <⊸(≡◶⊣‿0¨`) picks
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}
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Win ← ∨´ ((∧´ 0⊸≡)˘)∘(⍉∾⊢)
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Score ← +´⥊
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A ⇐ {
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picks‿states ← BingoFile 𝕩
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⊑ 0⊸≠⊸/ +´¨ picks × (Score × Win)˘¨ states
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}
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B ⇐ {
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picks‿states ← BingoFile 𝕩
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pick‿cur‿prev ← ⊑ ((∧´ Win˘)¨ states) / (picks ∾¨ states ⋈¨ »states)
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pick × Score (¬Win˘ prev) / cur
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}
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}
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################################################################################
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aoc5 ⇐ {
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VentFile ← ReadInt¨∘∾∘(CSV¨ 0‿2⊸⊏)∘Words¨ •FLines
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To ← {𝕨≡𝕩? 𝕩; ⌽⍟(𝕨>𝕩) (𝕨⌊𝕩) ↓ ↕(1+𝕨⌈𝕩)}
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DrawLine ← {x1‿y1‿x2‿y2: (x1 To x2) ⋈¨ (y1 To y2)}
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Orth ← {∨´ =´ <˘ 2‿∘ ⥊ 𝕩}
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Danger ← {1⊑ /⁼ ⊒ ∾DrawLine¨ 𝕩}
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A ⇐ Danger (Orth¨⊸/ VentFile), B ⇐ Danger VentFile
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}
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################################################################################
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aoc6 ⇐ {
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FishFile ← 9⊸↑ /⁼ ∘ CSVInt ∘ ⊑ ∘ •FLines
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Step ← (⊑ × (/⁼6‿8)˙) + «
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Fishies ← {+´ Step⍟𝕨 FishFile 𝕩}
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A ⇐ 80⊸Fishies, B ⇐ 256⊸Fishies
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}
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################################################################################
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aoc7 ⇐ {
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CrabFile ← CSVInt ∘ ⊑ ∘ •FLines
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Range ← {l + ↕(⌈´𝕩)¬(l←⌊´𝕩)}
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FuelA ← +´ ∘| -
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FuelB ← +´∘(÷⟜2)∘(⊢×+⟜1)∘| -
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_Go ← {⌊´ ps⊸𝔽¨ Range ps←CrabFile 𝕩}
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A ⇐ FuelA _Go, B ⇐ FuelB _Go
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}
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################################################################################
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aoc8 ⇐ {A⇐B⇐{"maybe later"!0, 𝕩}}
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################################################################################
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aoc9 ⇐ {
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SmokeFile ← > -⟜'0' ∘ •FLines
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Adj ← {<⎉1 ⍉ > ⟨∞«˘𝕩, ∞»˘𝕩, ∞«˘⌾⍉𝕩, ∞»˘⌾⍉𝕩⟩}
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Lowest ← ∧´¨ <⟜Adj
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Risk ← 1⊸+ × Lowest
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A ⇐ +´⥊ ∘ Risk ∘ SmokeFile
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B ⇐ {"nah"!0, 𝕩}
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}
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################################################################################
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At ⇐ {1⊑ ⊑ (⊑ ≡ 𝕩˙)¨⊸/ 𝕨} # use ⎊ for default
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aoc10 ⇐ {
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BadScore1 ← ⟨')'‿3,']'‿57,'}'‿1197,'>'‿25137⟩⊸At
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BadScore ← {'!'‿c: BadScore1 c; 0}
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pairs ← Words "() [] {} <>"
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Step ← {
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'!' ≡ ⊑⎊@ 𝕩? 𝕩;
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𝕨 = pairs At⟜⊑⎊@ 𝕩? 1↓𝕩;
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⊑ 𝕨 ∊ ⊑¨pairs? 𝕨∾𝕩;
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'!'‿𝕨
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}
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Find ← ""⊸(Step´) ⌽
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GoodScore1 ← ⟨'('‿1,'['‿2,'{'‿3,'<'‿4⟩⊸At
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GoodScore ← {'!' ≢ ⊑𝕩? 0 ((GoodScore1 ⊣) + (5⊸× ⊢))´ ⌽ 𝕩; 0}
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Middle ← ((⌊÷⟜2)∘≠ ⊑ ⊢) ∧ ∘ (0⊸≠¨⊸/)
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A ⇐ +´ BadScore∘Find¨ ∘ •FLines
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B ⇐ Middle GoodScore∘Find¨ ∘ •FLines
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}
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