implemented question 2.

src/advent/day2.rb

@@ -0,0 +1,99 @@
+# frozen_string_literal: true
+
+class Draw
+  def initialize(blue, red, green)
+    @blue = blue
+    @red = red
+    @green = green
+  end
+
+  def can_be_played_with(blue, red, green)
+    # puts "blue #{@blue} <= #{ blue } | red #{@red} <= #{ red } |  green #{@green} <= #{ green }"
+    @blue <= blue and @red <= red and @green <= green
+  end
+
+  def self.deserialize(ser)
+    parts = ser.strip.split(",")
+    vals = {}
+    parts.each do |part|
+      match = /^\s*(\d+)\s+(\w+)\s*$/.match(part)
+      vals[match[2]] = match[1].to_i
+    end
+    self.new(vals["blue"] || 0, vals["red"] || 0, vals["green"] || 0)
+  end
+
+  attr_accessor :red
+  attr_accessor :green
+  attr_accessor :blue
+
+end
+
+class Game
+  def initialize(id, draws)
+    @id = id
+    @draws = draws
+  end
+
+  def can_be_played_with(blue, red, green)
+    @draws.all? do |draw|
+      draw.can_be_played_with blue, red, green
+    end
+  end
+
+  def self.deserialize(line)
+    id = /\s*Game\s+(\d+):/.match(line)[1].to_i
+    draws_as_text = line[line.index(":") + 1..]
+    draws = draws_as_text.split(";").map(&Draw.method(:deserialize))
+    self.new id, draws
+  end
+
+  def fewer_number_of_cubes
+    [:blue, :red, :green].map do |color|
+      @draws.map {|draw| draw.send color }
+            .max || 0
+    end
+  end
+
+  def power_of_the_fewer_number_of_cubes
+    fewer_number_of_cubes.reduce 1, :*
+  end
+
+  attr_accessor :id
+end
+
+easy_inputs = "
+Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
+Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
+Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
+Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
+Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green
+"
+
+# one_game = "Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green"
+# game = Game.deserialize one_game
+# puts game.power_of_the_fewer_number_of_cubes
+# return
+
+input_file_name = File.join(File.dirname(__FILE__), "day_2_input.txt")
+
+input_content = File.open(input_file_name).read
+
+answer_1 = input_content.split("\n")
+           .filter {|line| ! line.empty?}
+           .map(& Game.method(:deserialize))
+           .filter {|game| game.can_be_played_with(14, 12, 13)}
+           .map {|game| game.id}
+           .sum
+puts "answer_1: #{answer_1}"
+
+answer_2 = input_content.split("\n")
+                        .filter {|line| ! line.empty?}
+                        .map(& Game.method(:deserialize))
+                        .map {|game| game.power_of_the_fewer_number_of_cubes}
+                        .sum
+puts "answer_2: #{answer_2}"
+# puts "9".to_i()
+# dict = {}
+# dict["one"] = 34
+# dict["two"] = 90
+# puts dict["dd"] || 90

src/advent/day_2_input.txt

@@ -0,0 +1,100 @@
+Game 1: 1 green, 1 blue, 1 red; 1 green, 8 red, 7 blue; 6 blue, 10 red; 4 red, 9 blue, 2 green; 1 green, 3 blue; 4 red, 1 green, 10 blue
+Game 2: 9 red, 7 green, 3 blue; 15 green, 2 blue, 5 red; 10 red, 3 blue, 13 green
+Game 3: 3 red, 1 blue, 4 green; 6 red, 3 green, 2 blue; 6 red, 16 blue, 1 green
+Game 4: 2 blue, 2 green, 19 red; 3 blue, 11 red, 16 green; 18 blue, 13 green, 20 red; 18 red, 12 blue, 16 green; 8 green, 16 blue, 16 red
+Game 5: 8 green, 1 red, 12 blue; 10 green, 6 red, 13 blue; 1 red, 3 blue, 6 green; 14 blue, 2 red, 7 green
+Game 6: 1 red; 1 blue; 2 green, 1 blue; 1 red, 3 blue; 1 red, 2 blue, 2 green; 1 green, 7 blue, 1 red
+Game 7: 2 red, 1 blue, 5 green; 5 green, 1 red; 3 red, 7 blue; 8 blue, 1 red, 4 green
+Game 8: 6 green, 4 blue; 10 green, 7 blue; 5 blue; 1 red, 7 blue; 11 green, 1 red
+Game 9: 2 green, 2 blue; 8 red, 5 blue, 6 green; 11 green, 6 blue, 8 red; 4 blue, 3 green, 8 red; 2 green, 10 red, 5 blue
+Game 10: 2 blue, 8 green, 2 red; 10 blue, 3 green; 12 blue, 1 green, 2 red; 9 green, 2 red; 3 green, 2 red, 5 blue
+Game 11: 12 red, 1 green, 1 blue; 7 green, 1 red; 2 blue, 1 red, 3 green; 15 green, 8 red
+Game 12: 4 red, 10 green, 4 blue; 3 red, 10 blue, 18 green; 5 red, 2 blue, 18 green; 8 blue, 16 green, 2 red
+Game 13: 3 green, 1 blue, 8 red; 8 blue, 2 green, 6 red; 6 blue, 3 green, 11 red; 2 red, 13 blue; 1 blue, 5 red, 2 green; 6 red
+Game 14: 3 blue, 15 green, 10 red; 7 green, 6 red, 6 blue; 8 red, 13 green, 4 blue; 4 green, 1 blue, 9 red; 9 red, 7 blue
+Game 15: 8 green, 9 blue, 4 red; 8 blue, 4 green, 4 red; 8 green, 7 blue, 10 red
+Game 16: 12 red, 8 blue, 2 green; 4 green, 10 red, 4 blue; 9 green, 4 blue, 5 red; 7 red, 1 blue
+Game 17: 1 blue, 4 red, 6 green; 1 blue; 6 red, 8 blue, 10 green; 2 blue, 2 red, 3 green; 8 green, 14 red, 6 blue
+Game 18: 5 blue, 1 green, 5 red; 1 green, 11 blue; 3 green, 18 red, 8 blue
+Game 19: 2 blue, 2 red, 16 green; 5 blue, 2 red, 17 green; 10 green, 6 blue; 2 blue, 11 green; 15 green, 3 blue, 5 red; 18 green, 8 red
+Game 20: 7 red, 6 green, 3 blue; 7 red, 16 green; 1 blue, 6 green; 1 green, 7 red
+Game 21: 10 red, 10 blue; 16 green, 4 blue, 7 red; 2 red, 9 blue, 11 green
+Game 22: 12 green, 7 red, 2 blue; 6 blue, 3 red, 10 green; 11 red, 12 green, 3 blue; 8 red, 3 green, 3 blue; 3 red, 4 green, 7 blue
+Game 23: 7 red, 9 blue; 5 red, 1 green, 4 blue; 8 green, 9 blue, 10 red; 8 green, 9 red, 11 blue
+Game 24: 4 blue, 2 red, 15 green; 1 green, 4 blue; 7 green, 2 blue
+Game 25: 12 red, 12 green; 11 red, 5 blue, 15 green; 15 green, 5 red, 3 blue; 15 green, 6 blue, 10 red; 3 blue, 1 green, 5 red
+Game 26: 7 red, 18 green, 6 blue; 3 red, 2 green, 7 blue; 1 red, 1 green, 1 blue; 16 green, 5 red, 2 blue; 5 blue, 4 red; 12 red, 2 blue
+Game 27: 1 blue, 5 red, 5 green; 11 blue, 7 red, 5 green; 8 blue, 7 green, 4 red; 3 green, 3 blue; 14 green, 1 blue
+Game 28: 12 green, 1 red, 1 blue; 17 green, 1 red, 1 blue; 1 red, 1 blue, 15 green
+Game 29: 15 green, 10 blue; 6 green, 5 blue, 2 red; 19 green, 5 blue
+Game 30: 10 red, 13 green, 2 blue; 5 blue, 14 green, 1 red; 9 green, 14 red, 3 blue; 14 blue, 14 green, 17 red; 15 blue, 9 green, 16 red
+Game 31: 6 green, 1 blue, 8 red; 12 red, 8 green; 5 red, 8 green; 9 green, 11 red
+Game 32: 6 red, 7 green; 12 green, 1 blue, 2 red; 2 red, 3 green; 4 red, 13 green; 7 red, 9 green
+Game 33: 3 red, 7 blue, 10 green; 4 blue, 3 red, 15 green; 6 red, 7 blue, 18 green; 5 red, 10 green, 10 blue; 2 blue, 6 red, 10 green; 7 blue, 3 green, 6 red
+Game 34: 1 red, 6 blue, 3 green; 2 green, 13 blue, 2 red; 2 red, 7 green, 5 blue; 4 red, 2 blue, 5 green; 3 red, 4 blue, 3 green
+Game 35: 3 red, 4 blue; 3 green, 6 red, 2 blue; 8 green, 4 blue, 3 red; 11 red, 4 blue, 3 green; 5 green, 1 blue, 6 red; 8 red, 7 green
+Game 36: 2 blue, 8 red, 2 green; 11 green, 14 red; 14 red, 1 green; 7 green, 2 blue, 11 red
+Game 37: 2 green, 10 red; 1 green, 5 red; 5 red, 11 green; 1 blue, 11 green, 2 red
+Game 38: 11 red, 1 green, 11 blue; 9 red, 1 green; 5 red, 2 blue, 1 green; 2 red, 6 blue
+Game 39: 3 red; 2 green, 18 red, 2 blue; 2 green; 6 red, 2 green; 12 red; 3 green, 11 red
+Game 40: 3 blue, 4 red; 2 red; 7 red, 1 green, 2 blue; 1 green, 1 blue; 5 green; 2 green, 2 red, 1 blue
+Game 41: 5 green, 3 blue, 10 red; 6 green, 3 blue, 12 red; 2 blue, 5 green, 7 red; 2 blue, 3 green, 2 red
+Game 42: 11 green, 1 red; 6 green, 4 red; 4 red, 4 blue, 7 green; 11 green, 5 red, 5 blue
+Game 43: 1 blue; 6 green, 16 blue; 7 green, 1 red; 2 red, 15 green, 7 blue; 2 red, 16 green, 3 blue; 3 red, 14 blue
+Game 44: 3 green, 1 red, 5 blue; 9 blue, 1 red; 14 blue; 7 blue, 1 green, 2 red
+Game 45: 1 blue, 1 red; 1 blue, 1 red; 3 green, 1 red; 1 green, 1 blue
+Game 46: 1 green, 8 red, 2 blue; 13 blue, 7 red, 2 green; 3 red, 4 blue; 2 green, 18 blue, 5 red; 4 red, 5 green, 9 blue; 3 red, 7 blue, 1 green
+Game 47: 8 blue, 1 red, 8 green; 2 red, 6 green, 1 blue; 2 green, 6 blue, 5 red; 6 blue, 6 red, 6 green; 6 green, 9 blue, 7 red
+Game 48: 5 blue, 14 green, 8 red; 7 blue, 10 green, 7 red; 9 green, 9 blue, 6 red; 9 green, 5 blue, 17 red
+Game 49: 10 green, 6 blue, 2 red; 3 blue, 5 green, 4 red; 8 red, 8 blue, 11 green; 5 red, 6 green, 5 blue
+Game 50: 3 red, 2 green; 1 red, 8 blue; 2 red, 2 green, 3 blue
+Game 51: 4 green, 8 red; 8 red, 5 blue, 13 green; 3 red, 11 blue, 14 green; 5 blue, 11 green, 3 red; 5 red, 9 blue, 11 green; 6 green, 4 red, 12 blue
+Game 52: 2 green, 1 red, 1 blue; 3 blue, 2 green, 2 red; 1 green, 3 blue, 4 red; 2 blue; 8 red, 2 blue
+Game 53: 18 blue, 4 green, 9 red; 6 blue, 9 green; 14 blue, 9 green, 9 red
+Game 54: 2 red, 7 blue, 3 green; 6 green, 3 red, 2 blue; 1 blue, 3 green, 3 red; 2 green, 4 red, 9 blue
+Game 55: 3 green, 6 blue; 6 green, 8 blue, 6 red; 5 green, 3 red; 4 blue, 8 green, 1 red; 1 red, 2 blue
+Game 56: 4 green; 2 blue, 4 green, 1 red; 3 blue, 6 green
+Game 57: 15 red, 3 green; 15 red, 1 blue, 2 green; 15 red, 1 green
+Game 58: 1 red, 5 blue; 5 green; 6 green, 8 blue, 2 red; 1 red, 6 blue, 6 green
+Game 59: 3 green, 8 blue, 5 red; 1 green, 12 blue, 4 red; 2 green, 18 blue; 2 red, 4 green; 16 blue, 3 red, 1 green
+Game 60: 7 green, 6 blue, 2 red; 6 blue, 2 red, 4 green; 11 green, 5 blue; 4 green, 4 blue, 3 red; 2 red, 7 green, 8 blue; 6 green, 4 red, 1 blue
+Game 61: 6 green, 6 red; 1 green, 3 blue; 6 green, 1 red, 7 blue; 5 red, 19 green, 7 blue
+Game 62: 3 red, 4 green; 2 red, 4 blue; 1 red, 13 blue, 5 green
+Game 63: 2 red, 13 green, 4 blue; 10 green, 5 red, 10 blue; 13 blue, 6 red, 3 green
+Game 64: 5 blue, 2 green; 1 blue, 1 red, 6 green; 3 blue, 11 green; 2 blue, 8 green, 1 red
+Game 65: 4 red, 5 green, 2 blue; 2 blue, 4 red, 1 green; 3 red, 5 green, 4 blue; 6 red, 3 blue; 3 blue, 2 green, 5 red; 2 green, 3 red
+Game 66: 14 red, 17 green, 1 blue; 2 red, 12 green, 2 blue; 1 blue, 4 green, 14 red
+Game 67: 7 green, 4 red, 10 blue; 11 blue, 4 green; 7 green, 2 red, 3 blue; 11 blue, 3 red, 9 green
+Game 68: 5 blue, 4 red; 10 blue, 8 green, 5 red; 1 green, 1 red, 10 blue
+Game 69: 1 red, 15 blue, 2 green; 16 blue, 15 green; 1 red, 15 green, 14 blue; 2 red, 5 green, 11 blue; 5 green, 1 red, 13 blue; 2 blue, 16 green
+Game 70: 1 red, 2 blue, 9 green; 2 green, 1 red; 7 green, 4 blue
+Game 71: 5 blue, 1 green; 2 green, 5 blue; 2 blue, 1 red, 1 green; 1 red, 5 blue; 1 red
+Game 72: 5 green, 5 blue; 8 green, 3 red; 7 blue, 8 green
+Game 73: 1 green, 4 red, 3 blue; 5 green, 5 blue, 3 red; 8 blue, 7 green, 1 red; 3 blue, 3 red, 9 green; 13 green, 2 red, 10 blue
+Game 74: 2 red, 4 green, 5 blue; 3 blue, 6 green, 4 red; 2 blue, 6 green, 5 red
+Game 75: 10 red, 20 green, 14 blue; 9 blue, 15 green, 17 red; 8 green, 18 blue, 6 red
+Game 76: 7 green, 1 red, 9 blue; 1 green, 3 red; 3 red, 3 green; 4 blue, 20 red, 9 green; 12 red, 7 blue
+Game 77: 1 blue, 9 green, 7 red; 5 green, 7 red; 4 red, 1 green, 1 blue; 6 green, 3 red, 3 blue; 3 blue, 5 green, 18 red
+Game 78: 11 red, 4 green, 4 blue; 12 red, 3 green, 4 blue; 11 red, 4 green, 13 blue; 8 red, 5 blue, 6 green
+Game 79: 1 blue, 16 red; 9 red, 2 green, 2 blue; 2 blue, 12 red; 3 green, 12 red
+Game 80: 2 blue, 3 green, 5 red; 5 red, 8 blue, 3 green; 10 blue, 8 red, 8 green; 5 blue, 4 red
+Game 81: 1 green, 3 red; 6 blue; 6 red, 1 green, 8 blue; 1 green, 8 blue
+Game 82: 4 blue, 2 red; 7 blue, 10 green, 3 red; 7 green, 1 red
+Game 83: 12 blue, 9 green; 10 green, 7 blue; 7 green, 1 red, 12 blue; 5 green, 12 blue
+Game 84: 1 green, 2 blue, 1 red; 2 green, 9 red; 14 red, 1 blue, 2 green; 2 green, 9 red; 4 blue, 2 green, 9 red
+Game 85: 1 blue, 8 red, 8 green; 1 green, 4 red, 4 blue; 8 red, 7 green, 18 blue; 5 green, 3 red, 15 blue; 11 blue, 1 red, 4 green; 4 green, 3 red, 1 blue
+Game 86: 14 green, 11 red, 14 blue; 9 green, 14 blue; 12 red, 4 green, 13 blue; 14 green, 9 blue, 2 red; 5 red, 17 green, 1 blue
+Game 87: 3 red, 3 green, 7 blue; 3 green, 2 red, 20 blue; 12 green, 9 blue; 3 blue, 3 red, 8 green; 12 green, 9 blue, 2 red
+Game 88: 4 green, 1 red, 4 blue; 1 green, 3 red, 1 blue; 2 green, 3 blue, 3 red; 5 green, 1 blue
+Game 89: 8 blue, 1 red; 4 red, 6 blue, 1 green; 12 blue, 3 red; 1 red, 4 blue; 3 red, 5 blue, 1 green; 7 red, 7 blue
+Game 90: 3 red, 2 green; 4 blue, 13 red; 1 blue, 7 red
+Game 91: 8 blue, 2 red, 9 green; 5 blue, 17 green; 2 green, 7 blue, 1 red; 8 blue, 11 green, 3 red; 2 red, 5 blue, 1 green
+Game 92: 8 red, 11 blue; 7 green, 9 blue, 2 red; 6 red, 3 green, 3 blue; 4 green, 8 blue, 2 red; 9 blue, 12 green, 8 red; 6 red, 14 blue
+Game 93: 4 blue, 1 red, 3 green; 7 green, 1 red, 3 blue; 6 green, 1 red, 3 blue; 3 blue, 10 green, 1 red; 3 blue, 7 green
+Game 94: 11 red, 13 green, 3 blue; 4 green, 15 red, 5 blue; 1 red, 7 green
+Game 95: 4 green, 10 blue, 6 red; 4 green, 9 blue; 8 blue, 9 red, 5 green; 7 green, 12 blue; 12 blue, 8 green, 3 red; 2 green, 5 red
+Game 96: 2 red, 2 green, 1 blue; 1 red, 4 green; 1 green
+Game 97: 4 red, 5 green; 5 blue, 3 red; 8 blue, 2 green, 1 red
+Game 98: 1 blue; 2 green, 1 red; 5 red, 2 green; 4 red, 1 green; 2 red, 2 green, 2 blue
+Game 99: 6 blue, 5 red, 2 green; 9 red, 1 blue; 2 green, 2 red, 5 blue; 10 blue, 2 green; 11 blue, 1 green, 4 red
+Game 100: 1 blue, 13 green, 14 red; 11 green, 11 blue, 7 red; 2 red, 1 blue, 2 green; 10 blue, 15 red