From 42a4f1487899b9a23db462d048d22b138957b40c Mon Sep 17 00:00:00 2001 From: sterni Date: Sat, 10 Dec 2022 19:28:37 +0100 Subject: feat(sterni/aoc/2022): day09 BQN solution Change-Id: Idad006eaacbd89827feb5bbd9d6e04605743fca2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7555 Autosubmit: sterni Reviewed-by: sterni Tested-by: BuildkiteCI --- users/sterni/exercises/aoc/2022/09/9.bqn | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 users/sterni/exercises/aoc/2022/09/9.bqn (limited to 'users') diff --git a/users/sterni/exercises/aoc/2022/09/9.bqn b/users/sterni/exercises/aoc/2022/09/9.bqn new file mode 100644 index 000000000000..fff38b591311 --- /dev/null +++ b/users/sterni/exercises/aoc/2022/09/9.bqn @@ -0,0 +1,17 @@ +⟨SplitOn,ReadDec⟩ ← •Import "../../lib.bqn" +i ← ReadDec⌾(1⊸⊑)¨ (<' ')⊸SplitOn¨ •FLines "input" + +UnitDelta ← (⊢÷(|+0⊸=)) +ExpandStep ← { + 𝕊 "L"‿l: 𝕊 (-l)‿0; + 𝕊 "R"‿r: 𝕊 r‿0; + 𝕊 "U"‿u: 𝕊 0‿u; + 𝕊 "D"‿d: 𝕊 0‿(-d); + 𝕊 delta: ((⌈´|)⥊<∘UnitDelta) delta +} + +Step ← {knots 𝕊 delta: {h 𝕊 t: (UnitDelta h-t) +⍟(1<⌈´|h-t) t}` (delta⊸+)⌾⊑ knots} +Visited ← {+´0=⊒(¯1⊸⊑)¨(<𝕨⥊<0‿0) Step` ∾ExpandStep¨ 𝕩} + +•Out "day09.1: "∾•Fmt 2 Visited i +•Out "day09.2: "∾•Fmt 10 Visited i -- cgit 1.4.1