From 1bdde04838c5787108e3ab2aa87a4c232184f480 Mon Sep 17 00:00:00 2001
From: Ben Harris <bjh21@bjh21.me.uk>
Date: Thu, 9 May 2024 09:25:58 +0100
Subject: [PATCH] 09a: successfully tracing path using fold

---
 09/09a.bqn | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 09/09a.bqn

diff --git a/09/09a.bqn b/09/09a.bqn
new file mode 100644
index 0000000..1c46524
--- /dev/null
+++ b/09/09a.bqn
@@ -0,0 +1,15 @@
+
+Prep←{
+  directions←⍉['U'‿⟨0,1⟩,'D'‿⟨0,¯1⟩,'L'‿⟨¯1,0⟩,'R'‿⟨1,0⟩]
+  dirs←((⊏directions)⊐⊏⍉𝕩)⊏(1⊏directions)
+  dists←•ParseFloat˘2↓˘𝕩
+  dists/dirs
+}
+
+Step←{m𝕊⟨h,t⟩:h+↩m,t+↩(×h-t)×(∨´1<|h-t),•Show⟨h,t⟩}
+
+Main←{
+  ⟨⟨0,0⟩,⟨0,0⟩⟩Step´⌽𝕩
+}
+
+•Show Main Prep>•file.Lines ⊑•args
-- 
2.30.2