solve day 10 in Ruby

Author: Andriamanitra

day10/input.txt

@@ -0,0 +1,145 @@
+addx 1
+addx 4
+addx 1
+noop
+addx 4
+noop
+noop
+noop
+noop
+addx 4
+addx 1
+addx 5
+noop
+noop
+addx 5
+addx -1
+addx 3
+addx 3
+addx 1
+noop
+noop
+addx 4
+addx 1
+noop
+addx -38
+addx 10
+noop
+noop
+noop
+noop
+noop
+addx 2
+addx 3
+addx -2
+addx 2
+addx 5
+addx 2
+addx -13
+addx 14
+addx 2
+noop
+noop
+addx -9
+addx 19
+addx -2
+addx 2
+addx -9
+addx -24
+addx 1
+addx 6
+noop
+noop
+addx -2
+addx 5
+noop
+noop
+addx -12
+addx 15
+noop
+addx 3
+addx 3
+addx 1
+addx 5
+noop
+noop
+noop
+noop
+addx -24
+addx 29
+addx 5
+noop
+noop
+addx -37
+noop
+addx 26
+noop
+noop
+addx -18
+addx 28
+addx -24
+addx 17
+addx -16
+addx 4
+noop
+addx 5
+addx -2
+addx 5
+addx 2
+addx -18
+addx 24
+noop
+addx -2
+addx 10
+addx -6
+addx -12
+addx -23
+noop
+addx 41
+addx -34
+addx 30
+addx -25
+noop
+addx 16
+addx -15
+addx 2
+addx -12
+addx 19
+addx 3
+noop
+addx 2
+addx -27
+addx 36
+addx -6
+noop
+noop
+addx 7
+addx -33
+addx -4
+noop
+addx 24
+noop
+addx -17
+addx 1
+noop
+addx 4
+addx 1
+addx 14
+addx -12
+addx -14
+addx 21
+noop
+noop
+noop
+addx 5
+addx -17
+addx 1
+addx 20
+addx 2
+noop
+addx 2
+noop
+noop
+noop
+noop
+noop

day10/solution.rb

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+require_relative '../lib/base.rb'
+
+class Day10 < AdventOfCode
+  def self.take_input(s)
+    s.lines.map(&:split)
+  end
+
+  part(1) do |input|
+    x = 1
+    cycle = 0
+    total = 0
+    stops = [20, 60, 100, 140, 180, 220]
+    input.each do |a|
+      if a[0] == "addx"
+        cycle += 2
+        if cycle >= stops[0]
+          total += stops.shift * x
+          break if stops.empty?
+        end
+        x += a[1].to_i
+      else
+        cycle += 1
+      end
+
+      if cycle >= stops[0]
+        total += stops.shift * x
+        break if stops.empty?
+      end
+    end
+    total
+  end
+
+  part(2) do |input|
+    x = 1
+    width = 40
+    height = 6
+    screen = Array.new(height){' ' * width}
+    cycle = 0
+    i = 0
+    waiting = false
+    height.times do |r|
+      width.times do |w|
+        screen[r][w] = (x-1..x+1) === w ? '█' : '.'
+        cycle += 1
+        
+        if input[i][0] == "addx"
+          if waiting
+            waiting = false
+            x += input[i][1].to_i
+            i += 1
+          else
+            waiting = true
+          end
+        else
+          i += 1
+        end
+      end
+    end
+    screen.join("\n")
+  end
+end
+
+Day10.run