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authorsterni <sternenseemann@systemli.org>2021-12-26T19·47+0100
committerclbot <clbot@tvl.fyi>2021-12-26T19·51+0000
commitd052bc59531a1139e357f598f6aaabdbb346634c (patch)
tree253457a5d06fdc2f1f5f232d69688365215d60c6 /users
parent675f97e5357ebad9a231834319dd6f098a1c1ddd (diff)
feat(sterni/aoc/2021): day 4 solution r/3445
Change-Id: Ib8b4206b40acad32e10ebd9103e54074ba3452fc
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4681
Reviewed-by: sterni <sternenseemann@systemli.org>
Autosubmit: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Diffstat (limited to 'users')
-rwxr-xr-xusers/sterni/exercises/aoc/2021/solutions.bqn20
1 files changed, 20 insertions, 0 deletions
diff --git a/users/sterni/exercises/aoc/2021/solutions.bqn b/users/sterni/exercises/aoc/2021/solutions.bqn
index 5a957fc132d6..45c19998bcf7 100755
--- a/users/sterni/exercises/aoc/2021/solutions.bqn
+++ b/users/sterni/exercises/aoc/2021/solutions.bqn
@@ -125,6 +125,26 @@ CO2ScrubberRating ← DebinList 0 >_lifeSupportRating ⊢
 •Out "Day 3.2: "∾•Fmt (OxygenGeneratorRating×CO2ScrubberRating) day3Input
 
 #
+# 2021-12-04
+#
+
+day4Numbers ← ReadDec¨ ',' SplitOn ⊑ReadInput 4
+day4Boards ← ReadDec¨>˘(' '⊸SplitOn¨)> (<⟨⟩) SplitOn 2↓ReadInput 4
+
+BoardWins ← {C ← ∨´∘(∧´˘) ⋄ (C∨C∘⍉)𝕩}
+
+_CallNumber ← {(𝕗∊⥊𝕩) (∨⍟(¬∘BoardWins∘⊢))˘ 𝕨}
+
+BoardWinScores ← {
+  𝕩 (0⊸</×) (⊢-») (+´)∘(BoardWins˘/(+´⥊)˘∘(𝕨⊸×⟜¬))¨ (<0⥊˜≢𝕨) (𝕨 _CallNumber)`𝕩
+}
+
+day4WinScores ← day4Boards BoardWinScores day4Numbers
+
+•Out "Day 4.1: "∾•Fmt ⊑day4WinScores
+•Out "Day 4.2: "∾•Fmt ⊑⌽day4WinScores
+
+#
 # 2021-12-06
 #