Adding Day 1 Solution

csharp/Day1Solution.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AOC2015
+{
+    class Day1Solution : Solution
+    {
+        public override int Day => 1;
+        public override string Name => "Day 1: Not Quite Lisp";
+
+        public override void Run()
+        {
+            string input = File.ReadAllText("Input\\Day1Input.txt");
+            Console.WriteLine($"Part 1 Answer: {Part1(input)}");
+            Console.WriteLine($"Part 2 Answer: {Part2(input)}");
+        }
+
+        private int Part1(string input)
+        {
+            int floor = 0;
+            for (int i = 0; i < input.Length; i++)
+            {
+                if (input[i] == '(')
+                    floor++;
+                else if (input[i] == ')')
+                    floor--;
+            }
+            return floor;
+        }
+
+        private int Part2(string input)
+        {
+            int floor = 0;
+            for (int i = 0; i < input.Length; i++)
+            {
+                if (input[i] == '(')
+                    floor++;
+                else if (input[i] == ')')
+                    floor--;
+
+                if (floor == -1)
+                    return i+1;
+            }
+            return -1;
+        }
+    }
+}

csharp/Solution.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AOC2015
+{
+    abstract class Solution
+    {
+        public abstract string Name { get; }
+        public abstract int Day { get; }
+        public abstract void Run();
+    }
+}