day03/input.sample.txt

@@ -1,12 +0,0 @@
-00100
-11110
-10110
-10111
-10101
-01111
-00111
-11100
-10000
-11001
-00010
-01010

day03/solution.rb

@@ -1,43 +0,0 @@
-#!/bin/env ruby
-
-# Part 1
-report = File.readlines('./input').map(&:strip)
-masks = []
-report[0].length.times { masks.push(2**_1) }
-report.map! { _1.to_i(2) }
-gamma = 0
-
-masks.each do |mask|
-  gamma += mask if report.map { mask & _1 }.reject(&:zero?).count > report.count / 2
-end
-
-epsilon = gamma ^ masks.sum
-puts "Gamma is #{gamma}"
-puts "Epsilon is #{epsilon}"
-puts "Power is #{gamma * epsilon}"
-
-# Part 2
-def get_rating(report, masks, invert)
-  report_copy = report.clone
-  masks.each do |mask|
-    common = invert ? 1 : 0
-    if report_copy.map { mask & _1 }.reject(&:zero?).count >= report_copy.count / 2.to_f
-      common = invert ? 0 : 1
-    end
-    report_copy.reject! do |number|
-      if common.zero?
-        (mask & number).zero? ? false : true
-      else
-        (mask & number).zero? ? true : false
-      end
-    end
-    return report_copy[0] if report_copy.count == 1
-  end
-end
-
-masks.reverse!
-o2 = get_rating(report, masks, false)
-co2 = get_rating(report, masks, true)
-puts "Oxygen rating is #{o2}"
-puts "CO2 rating is #{co2}"
-puts "Life Support rating is #{o2 * co2}"