From: Ben Harris <bjh21@bjh21.me.uk>
Date: Thu, 30 May 2024 13:32:51 +0000 (+0100)
Subject: 20a example OK
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~bjharris/git?a=commitdiff_plain;h=aa0075023e1147344faa386f72db3cdaed0ed9b0;p=aoc-2022.git

20a example OK

Fails on the real input though.
---

diff --git a/20/20a.bqn b/20/20a.bqn
index be328ad..4414236 100644
--- a/20/20a.bqn
+++ b/20/20a.bqn
@@ -5,17 +5,17 @@ Main←{ 𝕊 orig:
   cur←orig
   #JumpFwd←{(1⊸⌽)⌾(((1+|𝕨)⊸↑)∘((⊑𝕩⊐𝕨)⊸⌽)) 𝕩}
   #Jump←{𝕨≥0 ? 𝕨 JumpFwd 𝕩; ⌽ 𝕨 JumpFwd ⌽𝕩}
+  Wrap←{1+(𝕨-1)|𝕩-1}
   Jump←{
     from ← ⊑𝕩⊐𝕨
-    to ← (¯1+≠𝕩)|𝕨+from
+    to ← (≠𝕩) Wrap 𝕨+from
     len ← to-from
-    •Show from‿to‿len
-    •Show ((1+|len)⊸↑∘((to⌊from)⊸↓)) 𝕩
     ((×len)⊸⌽) ⌾ ((1+|len)⊸↑∘((to⌊from)⊸↓)) 𝕩
   }
   {
     •Show cur ↩ 𝕩 Jump cur
   }¨orig
+  +´((≠cur)|(cur⊐0)+⟨1000,2000,3000⟩)⊏cur
 }
 
 •Show Main Prep •file.Lines ⊑•args