From 697558abc7277dc476e5e63f843e26f4b7f4eb4e Mon Sep 17 00:00:00 2001
From: Nat Lasseter <Nat Lasseter nathan@bytemark.co.uk>
Date: Thu, 14 Dec 2017 18:33:27 +0000
Subject: Day13 Part2 complete

---
 day13/part2     | 42 ++++++++++++++++++++++++++++++++++++++++++
 day13/part2.dnw | 53 -----------------------------------------------------
 day13/test      |  4 ----
 3 files changed, 42 insertions(+), 57 deletions(-)
 create mode 100755 day13/part2
 delete mode 100755 day13/part2.dnw
 delete mode 100644 day13/test

(limited to 'day13')

diff --git a/day13/part2 b/day13/part2
new file mode 100755
index 0000000..71a8ccd
--- /dev/null
+++ b/day13/part2
@@ -0,0 +1,42 @@
+#!/usr/bin/env ruby
+
+class Firewall
+  class Layer
+    def initialize(range)
+      @period = (range - 1) * 2
+    end
+
+    def will_capture_at?(time)
+      return time % @period == 0
+    end
+  end
+
+  def initialize
+    @layers = []
+  end
+
+  def add_layer!(depth, range)
+    @layers[depth] = Layer.new(range)
+  end
+
+  def will_capture_at?(time)
+    (0...@layers.length).each do |i|
+      next if @layers[i].nil?
+      return true if @layers[i].will_capture_at?(time + i)
+    end
+    return false
+  end
+end
+
+
+input = $stdin.readlines.map(&:chomp).map{|l|l.split(': ').map(&:to_i)}
+
+firewall = Firewall.new
+input.each do |line|
+  firewall.add_layer!(line[0], line[1])
+end
+
+delay = 0
+delay += 1 while firewall.will_capture_at?(delay)
+
+puts delay
diff --git a/day13/part2.dnw b/day13/part2.dnw
deleted file mode 100755
index af6af5b..0000000
--- a/day13/part2.dnw
+++ /dev/null
@@ -1,53 +0,0 @@
-#!/usr/bin/env ruby
-
-class Firewall
-  class Layer
-    def initialize(range)
-      @period = (range - 1) * 2
-    end
-
-    def will_capture_at?(time)
-      return time % @period == 0
-    end
-  end
-
-  def initialize
-    @layers = []
-  end
-
-  def add_layer!(depth, range)
-    @layers[depth] = Layer.new(range)
-  end
-
-  def will_capture_at?(time)
-    (0...@layers.length).each do |i|
-      next if @layers[i].nil?
-      return true if @layers[i].will_capture_at?(time + i)
-    end
-    return false
-  end
-end
-
-
-input = $stdin.readlines.map(&:chomp).map{|l|l.split(': ').map(&:to_i)}
-lcm = input.map(&:last).inject(1, :lcm)
-delay = 0
-
-loop do
-  if delay > lcm then
-    puts "Went past lcm"
-    exit
-  end
-
-  firewall = Firewall.new
-
-  input.each do |line|
-    firewall.add_layer!(line[0], line[1])
-  end
-
-  break unless firewall.will_capture_at?(delay)
-
-  delay += 1
-end
-
-puts delay
diff --git a/day13/test b/day13/test
deleted file mode 100644
index 0239024..0000000
--- a/day13/test
+++ /dev/null
@@ -1,4 +0,0 @@
-0: 3
-1: 2
-4: 4
-6: 4
-- 
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