From 423d2bcb74df7290d2d7e8d3d4aaea278cd1e98b Mon Sep 17 00:00:00 2001
From: Nat Lasseter <user@4574.co.uk>
Date: Mon, 2 Dec 2019 12:58:09 +0000
Subject: Day 02, though it's not going to sclae whell when we add more
 instructions!

---
 day02/part2 | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100755 day02/part2

(limited to 'day02/part2')

diff --git a/day02/part2 b/day02/part2
new file mode 100755
index 0000000..aadb860
--- /dev/null
+++ b/day02/part2
@@ -0,0 +1,43 @@
+#!/usr/bin/env ruby
+
+Input = $stdin.readlines[0].strip.split(",").map(&:to_i)
+
+noun = 0
+verb = 0
+
+loop do
+  $input = Input.dup
+  $input[1] = noun
+  $input[2] = verb
+
+  $pc = 0
+
+  def handle_code
+    case $input[$pc]
+    when 1
+      $input[$input[$pc+3]] = $input[$input[$pc+1]] + $input[$input[$pc+2]]
+      return true
+    when 2
+      $input[$input[$pc+3]] = $input[$input[$pc+1]] * $input[$input[$pc+2]]
+      return true
+    when 99
+      return false
+    end
+  end
+
+  loop do
+    continue = handle_code
+    break unless continue
+    $pc += 4
+  end
+
+  break if $input[0] == 19690720
+
+  verb += 1
+  if verb == 100
+    verb = 0
+    noun += 1
+  end
+end
+
+puts (100 * noun) + verb
-- 
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