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| author | sterni <sternenseemann@systemli.org> | 2022-12-10T18·28+0100 |
|---|---|---|
| committer | clbot <clbot@tvl.fyi> | 2022-12-10T18·36+0000 |
| commit | 42a4f1487899b9a23db462d048d22b138957b40c (patch) | |
| tree | 3fbacdf26fc659b2908ecb6c412a89ee787b107b /users/sterni/exercises/aoc/2022/09/9.bqn | |
| parent | 7ce6c7363c027a32eebd0da952838de4b28df7a6 (diff) | |
feat(sterni/aoc/2022): day09 BQN solution r/5402
Change-Id: Idad006eaacbd89827feb5bbd9d6e04605743fca2 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7555 Autosubmit: sterni <sternenseemann@systemli.org> Reviewed-by: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI
Diffstat (limited to 'users/sterni/exercises/aoc/2022/09/9.bqn')
| -rw-r--r-- | users/sterni/exercises/aoc/2022/09/9.bqn | 17 |
1 files changed, 17 insertions, 0 deletions
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 |