From 5beb8a1276589d973041d7460d43e5a4ea48ef17 Mon Sep 17 00:00:00 2001
From: Alpha Chen <alpha@kejadlen.dev>
Date: Sat, 7 Dec 2019 21:21:07 -0800
Subject: [PATCH] [2019][ruby][8.x]

---
 2019/ruby/day_08.rb | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 2019/ruby/day_08.rb

diff --git a/2019/ruby/day_08.rb b/2019/ruby/day_08.rb
new file mode 100644
index 0000000..2e59ee6
--- /dev/null
+++ b/2019/ruby/day_08.rb
@@ -0,0 +1,17 @@
+image = ARGF.read.scan(/\d/).map(&:to_i)
+
+w = 25
+h = 6
+
+# l = image.each_slice(w*h).min_by {|l| l.count(0) }
+# p l.count(1) * l.count(2)
+
+layers = image.each_slice(w*h)
+puts layers
+  .inject {|n,l| n.zip(l) }
+  .map(&:flatten)
+  .map {|layers| layers.drop_while {|p| p == 2 }.first }
+  .map {|p| p.zero? ? "█" : " " }
+  .each_slice(w)
+  .map(&:join)
+  .join("\n")