From e12436c99bb04897d6344b6351d0336e4c627573 Mon Sep 17 00:00:00 2001
From: Leah Neukirchen <leah@vuxu.org>
Date: Thu, 28 Nov 2019 17:38:10 +0100
Subject: add rest

---
 day08.rb | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 day08.rb

(limited to 'day08.rb')

diff --git a/day08.rb b/day08.rb
new file mode 100644
index 0000000..a51543b
--- /dev/null
+++ b/day08.rb
@@ -0,0 +1,43 @@
+d=File.read("day08").split.map(&:to_i)
+
+def t(d)
+  return 0  if d.empty?
+
+  len = d.shift
+  md = d.shift
+
+  mds = 0
+  (0...len).map {
+    mds += t(d)
+  }
+  mds += d.shift(md).sum
+end
+
+def s(d)
+  return 0  if d.empty?
+
+  len = d.shift
+  md = d.shift
+
+  mds = (0...len).map {
+    s(d)
+  }
+  
+  m = d.shift(md)
+
+  if len == 0
+    m.sum
+  else
+    m.map { |i|
+      if i <=0 || i > mds.size
+        0
+      else
+        mds[i-1]
+      end
+    }.sum
+  end
+end
+
+p t(d.clone)  # 35852
+p s(d.clone)  # 33422
+
-- 
cgit 1.4.1