From e4657f1f087c91d4b7ca008fb8e5ad799cb610b7 Mon Sep 17 00:00:00 2001
From: Jeff Yates <jeff@z800.lab.doublehack.me>
Date: Thu, 10 Dec 2020 12:08:38 -0500
Subject: [PATCH] solved part 2

---
 day10/solution2.rb | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100755 day10/solution2.rb

diff --git a/day10/solution2.rb b/day10/solution2.rb
new file mode 100755
index 0000000..e2f6294
--- /dev/null
+++ b/day10/solution2.rb
@@ -0,0 +1,36 @@
+#!/bin/env ruby
+require 'pry'
+numbers = File.read('./input').split("\n").map(&:to_i).sort
+numbers.prepend(0)
+numbers.push(numbers[-1] + 3)
+#binding.pry
+solution = numbers.map.with_index do |num, i|
+    next if i == 0
+    num - numbers[i-1]
+end
+solution.compact!
+count = [0]
+count_i = 0
+solution.each.with_index do |num, i|
+    next if i == 0
+    if num == 3
+        count_i += 1
+        count.push(0)
+        next
+    end
+    count[count_i] += 1 if solution[i-1] == 1
+end
+
+count.delete(0)
+count.map! do |num|
+    case num
+    when 1
+        2
+    when 2
+        4
+    when 3
+        7        
+    end
+end
+
+p count.reduce(:*)
\ No newline at end of file