From 596c74d0d0af8bbd0a5e0e4f33c944df14ef7b9e Mon Sep 17 00:00:00 2001
From: TiagoRG <tiago.rgarcia@ua.pt>
Date: Wed, 7 Jun 2023 23:58:57 +0100
Subject: [PATCH] [2022] Day6 added

---
 AdventOfCode/Program.cs       |  1 +
 AdventOfCode/README.md        |  2 ++
 AdventOfCode/Year2022/Day6.cs | 27 +++++++++++++++++++++++++++
 README.md                     |  2 ++
 4 files changed, 32 insertions(+)
 create mode 100644 AdventOfCode/Year2022/Day6.cs

diff --git a/AdventOfCode/Program.cs b/AdventOfCode/Program.cs
index 411452e..5117423 100644
--- a/AdventOfCode/Program.cs
+++ b/AdventOfCode/Program.cs
@@ -10,6 +10,7 @@ class Program
         new Day2();
         new Day3();
         new Day4();
+        new Day6();
         new Day7();
     }
 }
\ No newline at end of file
diff --git a/AdventOfCode/README.md b/AdventOfCode/README.md
index 1cf062a..a61e2c4 100644
--- a/AdventOfCode/README.md
+++ b/AdventOfCode/README.md
@@ -6,4 +6,6 @@
 * [Day 1](https://github.com/TiagoRG/AdventOfCode/tree/main/AdventOfCode/Year2022/Day1.cs)
 * [Day 2](https://github.com/TiagoRG/AdventOfCode/tree/main/AdventOfCode/Year2022/Day2.cs)
 * [Day 3](https://github.com/TiagoRG/AdventOfCode/tree/main/AdventOfCode/Year2022/Day3.cs)
+* [Day 4](https://github.com/TiagoRG/AdventOfCode/tree/main/AdventOfCode/Year2022/Day4.cs)
+* [Day 6](https://github.com/TiagoRG/AdventOfCode/tree/main/AdventOfCode/Year2022/Day6.cs)
 * [Day 7](https://github.com/TiagoRG/AdventOfCode/tree/main/AdventOfCode/Year2022/Day7.cs)
\ No newline at end of file
diff --git a/AdventOfCode/Year2022/Day6.cs b/AdventOfCode/Year2022/Day6.cs
new file mode 100644
index 0000000..99b02dd
--- /dev/null
+++ b/AdventOfCode/Year2022/Day6.cs
@@ -0,0 +1,27 @@
+namespace AdventOfCode.Year2022;
+
+public class Day6
+{
+    private static readonly string _input = File.ReadAllText("inputs/day6.txt");
+    
+    public Day6()
+    {
+        Console.WriteLine("Day6 Solution");
+        Console.WriteLine($"Part1 Result: {GetValidMarkerIndex(4)}");
+        Console.WriteLine($"Part2 Result: {GetValidMarkerIndex(14)}");
+        Console.WriteLine("\n=============================\n");
+    }
+
+    private static int? GetValidMarkerIndex(int size)
+    {
+        for (int i = 0; i < _input.Length-size; i++)
+            if (ValidateMarker(_input.Substring(i, size)))
+                return i + size;
+        return null;
+    }
+
+    private static bool ValidateMarker(string marker)
+    {
+        return !marker.Where((c1, i) => marker.Where((c2, j) => c1 == c2 && i != j).Any()).Any();
+    }
+}
\ No newline at end of file
diff --git a/README.md b/README.md
index 8846701..108bcab 100644
--- a/README.md
+++ b/README.md
@@ -8,4 +8,6 @@
 * [Day 1](https://github.com/TiagoRG/AdventOfCode/tree/main/AdventOfCode/Year2022/Day1.cs)
 * [Day 2](https://github.com/TiagoRG/AdventOfCode/tree/main/AdventOfCode/Year2022/Day2.cs)
 * [Day 3](https://github.com/TiagoRG/AdventOfCode/tree/main/AdventOfCode/Year2022/Day3.cs)
+* [Day 4](https://github.com/TiagoRG/AdventOfCode/tree/main/AdventOfCode/Year2022/Day4.cs)
+* [Day 6](https://github.com/TiagoRG/AdventOfCode/tree/main/AdventOfCode/Year2022/Day6.cs)
 * [Day 7](https://github.com/TiagoRG/AdventOfCode/tree/main/AdventOfCode/Year2022/Day7.cs)
\ No newline at end of file