Add algorithm & shared method examples

AlgorithmsLibrary.csproj

@@ -49,6 +49,7 @@
     <Compile Include="Components\AlgorithmsCore\BaseClass.cs" />
     <Compile Include="Components\AlgorithmsCore\BaseClassTools.cs" />
     <Compile Include="Components\Algorithms\Eratosthenes.cs" />
+    <Compile Include="Components\Algorithms\Algorithm.example.cs" />
     <Compile Include="Components\Algorithms\Factorial.cs" />
     <Compile Include="Components\Algorithms\Fibonacci.cs" />
     <Compile Include="Components\Algorithms\Hanoi.cs" />

Components/Algorithms/Algorithm.example.cs

@@ -0,0 +1,39 @@
+using System;
+
+// include this
+using AlgorithmsLibrary.AlgorithmsCore;
+
+namespace AlgorithmsLibrary.Algorithms
+{
+
+    // derive from the "Algorithm" class
+    internal class SuperAlgorithm : Algorithm
+    {
+        // private field, you can add as many as you want
+        private string exclamationMark;
+
+        // override description to be displayed in the menu
+        // (optional)
+        public override string Description { get { return "I have the description!"; } }
+
+        // private method, you can add as many as you want
+        private string GetMessage(string text)
+        {
+            return "Im the algorithm! " +
+                text +
+                exclamationMark +
+                " 1 + 1 = " +
+                // method defined in the AlgorithmsCore/BaseClassTools.cs
+                OnePlusOne();
+        }
+
+        // ovverride Display method to handle algorithm output
+        // (optional, but required for functionality)
+        public override void Display()
+        {
+            exclamationMark = "!";
+
+            Console.Write(GetMessage("Hooray"));
+        }
+    }
+}

Components/AlgorithmsCore/BaseClassTools.cs

@@ -31,5 +31,12 @@ protected bool IntParseTestWithOutput(string num)
                 return false;
             }
         }
+
+        // example of the method to use across algorithms
+        // you can use any return type or method name
+        protected int OnePlusOne()
+        {
+            return 1 + 1;
+        }
     }
 }