From 43ab0a3a7a1e095f5f33f224ce73c413f49e156c Mon Sep 17 00:00:00 2001
From: Nat Lasseter <user@4574.co.uk>
Date: Sun, 2 Dec 2018 12:41:05 +0000
Subject: Initial commit

---
 day02/part1 | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100755 day02/part1

(limited to 'day02/part1')

diff --git a/day02/part1 b/day02/part1
new file mode 100755
index 0000000..dca8ec2
--- /dev/null
+++ b/day02/part1
@@ -0,0 +1,26 @@
+#!/usr/bin/env ruby
+
+class Integer
+	def two?
+		self == 2
+	end
+	def three?
+		self == 3
+	end
+end
+
+input = $stdin.readlines.map(&:chomp)
+
+twos = 0
+threes = 0
+
+input.each do |i|
+	hash = Hash.new(0)
+	i.chars.each do |c|
+		hash[c] += 1
+	end
+	twos += 1 if hash.values.map(&:two?).any?
+	threes += 1 if hash.values.map(&:three?).any?
+end
+
+puts twos * threes
-- 
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