Solved Day 2

day02/solution.rb

@@ -0,0 +1,22 @@
+#!/bin/env ruby
+require 'pry'
+
+def paper_needed(dimensions)
+  h, l, w = dimensions
+  (2 * l * w) + (2 * w * h) + (2 * h * l) + dimensions.min(2).reduce(:*)
+end
+
+def ribbon_needed(dimensions)
+  dimensions.min(2).sum * 2 + dimensions.reduce(:*)
+end
+
+presents = File.readlines('./input').map { |line| line.strip.split('x').map(&:to_i) }
+
+# Part 1, How many total square feet of wrapping paper should they order?
+paper_total = presents.map { |present| paper_needed(present) }.sum
+
+puts 'Part 1 Solution: ' + paper_total.to_s
+
+ribbon_total = presents.map { |present| ribbon_needed(present) }.sum
+
+puts 'Part 2 Solution: ' + ribbon_total.to_s