Revised day 1

src/day1/day1.rb

@@ -16,17 +16,33 @@ end
 
 puts "Amount of measurements larger than before: #{larger_than_before}"
 
-larger_than_previous_window = 0
+# A struct to represent a three item sliding window
-previous_window = nil
+Window = Struct.new(:a, :b, :c) do
-window = []
+  include Comparable
-inputs.each_with_index do |input, index|
+  def <=>(other)
-  unless index+2 >= inputs.size # Handle the last window not overreaching
+    self.a + self.b + self.c <=> other.a + other.b + other.c
-    window = [inputs[index], inputs[index+1], inputs[index+2]]
-    if previous_window && window.reduce(:+) > previous_window.reduce(:+) 
-      larger_than_previous_window += 1
-    end
-    previous_window = window
   end
 end
 
+# Take a list of inputs and translate them into three section windows
+def windowfy(inputs)
+  windowfied_inputs = []
+  inputs.each_with_index do |_, index|
+    unless index + 2 >= inputs.size
+      window = Window.new(inputs[index], inputs[index+1], inputs[index+2])
+      windowfied_inputs << window
+    end
+  end
+  return windowfied_inputs
+end
+
+windowfied_inputs = windowfy(inputs)
+
+larger_than_previous_window = 0
+previous_window = nil
+windowfied_inputs.each do |window|
+  larger_than_previous_window += 1 if previous_window && window > previous_window 
+  previous_window = window
+end
+
 puts "Amount of measurements larger than preivous window: #{larger_than_previous_window}"