Solved Day 4

day04/solution.rb

@@ -0,0 +1,26 @@
+#!/bin/env ruby
+# frozen_string_literal: true
+
+require 'pry'
+
+assignments = File.readlines('./input').map(&:strip).map do |assignment|
+  assignment.split(',').map { |pair| pair.split('-').map(&:to_i) }
+end
+
+solution = assignments.map do |first, second|
+  first = (first[0]..first[1])
+  second = (second[0]..second[1])
+  (first.cover?(second) || second.cover?(first))
+end
+
+puts "Part 1 solution #{solution.count(true)}"
+# #Part 2
+
+solution2 = assignments.map do |first, second|
+  first = (first[0]..first[1])
+  second = (second[0]..second[1])
+  (first.cover?(second.first) || second.cover?(first.first))
+end
+
+puts "Part 2 Solution #{solution2.count(true)}"
+# binding.pry