Day 8 - Part 2

Day8/Day8.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
-using System.Linq;
 
 namespace Advent
 {
@@ -15,9 +14,6 @@ namespace Advent
 
             var index = 0;
 
-            var minimumZeroCount = int.MaxValue;
-            var minimumZeroLayer = 0;
-
             var layers = new List<char[]>();
 
             while (index < data.Length)
@@ -29,6 +25,10 @@ namespace Advent
                 index += (25 * 6);
             }
 
+            /*
+            var minimumZeroCount = int.MaxValue;
+            var minimumZeroLayer = 0;
+
             var layerIndex = 0;
 
             foreach (var layer in layers)
@@ -45,6 +45,34 @@ namespace Advent
             }
 
             Console.WriteLine(layers[minimumZeroLayer].Count(c => c == '1') * layers[minimumZeroLayer].Count(c => c == '2'));
+            */
+
+            var finalImage = new char[25 * 6];
+            var startLayer = data.Length / (25 * 6) - 1;
+
+            finalImage = layers[startLayer];
+
+            for (var layerIndex = startLayer - 1; layerIndex >= 0; layerIndex--)
+            {
+                var layer = layers[layerIndex];
+
+                for (var i = 0; i < layer.Length; i++)
+                {
+                    if (layer[i] != '2')
+                        finalImage[i] = layer[i];
+                }
+            }
+
+            var outputIndex = 1;
+            foreach (var c in finalImage)
+            {
+                Console.Write(c == '0' ? ' ' : '*');
+
+                if (outputIndex % 25 == 0)
+                    Console.WriteLine();
+
+                outputIndex++;
+            }
         }
     }
 }