Add solution for 2016 Day 6

src/2016/Day06.cpp

@@ -2,30 +2,65 @@
 
 namespace y2016::day06
 {
-  REGISTER_DAY(2016, Day06, std::vector<int>, int);
+  REGISTER_DAY(2016, Day06, Array2D<char>, std::string);
 
-  REGISTER_TEST_EXAMPLE(2016, Day06, ExampleInput, 1, 0);
-  REGISTER_TEST(2016, Day06, Input, 1, 0);
-  REGISTER_TEST_EXAMPLE(2016, Day06, ExampleInput, 2, 0);
-  REGISTER_TEST(2016, Day06, Input, 2, 0);
+  REGISTER_TEST_EXAMPLE(2016, Day06, ExampleInput, 1, "easter");
+  REGISTER_TEST(2016, Day06, Input, 1, "xhnqpqql");
+  REGISTER_TEST_EXAMPLE(2016, Day06, ExampleInput, 2, "advent");
+  REGISTER_TEST(2016, Day06, Input, 2, "brhailro");
 
   READ_INPUT(input)
   {
-    std::vector<int> vec;
-    std::string str;
-    while (getline(input, str))
-    {
-    }
-    return vec;
+    return Input::ReadArray2D(input);
   }
 
   OUTPUT1(input)
   {
-    return 0;
+    std::string result;
+    for (int x = 0; x < input.width; x++)
+    {
+      std::map<char, int> map;
+      for (int y = 0; y < input.height; y++)
+      {
+        map[input.Get(x, y)]++;
+      }
+      int max = 0;
+      char maxChar;
+      for (const auto& [c, count] : map)
+      {
+        if (count > max)
+        {
+          maxChar = c;
+          max = count;
+        }
+      }
+      result.push_back(maxChar);
+    }
+    return result;
   }
 
   OUTPUT2(input)
   {
-    return 0;
+    std::string result;
+    for (int x = 0; x < input.width; x++)
+    {
+      std::map<char, int> map;
+      for (int y = 0; y < input.height; y++)
+      {
+        map[input.Get(x, y)]++;
+      }
+      int min = std::numeric_limits<int>::max();
+      char minChar;
+      for (const auto& [c, count] : map)
+      {
+        if (count < min)
+        {
+          minChar = c;
+          min = count;
+        }
+      }
+      result.push_back(minChar);
+    }
+    return result;
   }
 }