Strategy pattern example

Author: anupavanm

DesignPatterns.sln

@@ -41,6 +41,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ObserverPattern", "Observer
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "VisitorPattern", "VisitorPattern\VisitorPattern.csproj", "{C33B3A5D-E92B-455B-A9CD-4DFB6DF985A6}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StrategyPattern", "StrategyPattern\StrategyPattern.csproj", "{FCF7B59D-63F0-4BE3-AE39-3EA7D562A67E}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -123,6 +125,10 @@ Global
 		{C33B3A5D-E92B-455B-A9CD-4DFB6DF985A6}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{C33B3A5D-E92B-455B-A9CD-4DFB6DF985A6}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{C33B3A5D-E92B-455B-A9CD-4DFB6DF985A6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{FCF7B59D-63F0-4BE3-AE39-3EA7D562A67E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{FCF7B59D-63F0-4BE3-AE39-3EA7D562A67E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FCF7B59D-63F0-4BE3-AE39-3EA7D562A67E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{FCF7B59D-63F0-4BE3-AE39-3EA7D562A67E}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

StrategyPattern/Program.cs

@@ -0,0 +1,59 @@
+using System;
+using System.Collections.Generic;
+
+namespace StrategyPattern
+{
+  interface ISortStrategy
+  {
+    List<int> Sort(List<int> dataset);
+  }
+
+  class BubbleSortStrategy : ISortStrategy
+  {
+    public List<int> Sort(List<int> dataset)
+    {
+      Console.WriteLine("Sorting using Bubble Sort !");
+      return dataset;
+    }
+  }
+
+  class QuickSortStrategy : ISortStrategy
+  {
+    public List<int> Sort(List<int> dataset)
+    {
+      Console.WriteLine("Sorting using Quick Sort !");
+      return dataset;
+    }
+  }
+
+  class Sorter
+  {
+    private readonly ISortStrategy mSorter;
+
+    public Sorter(ISortStrategy sorter)
+    {
+      mSorter = sorter;
+    }
+
+    public List<int> Sort(List<int> unSortedList)
+    {
+      return mSorter.Sort(unSortedList);
+    }
+  }
+
+  class Program
+  {
+    static void Main(string[] args)
+    {
+      var unSortedList = new List<int> { 1, 10, 2, 16, 19 };
+
+      var sorter = new Sorter(new QuickSortStrategy());
+      sorter.Sort(unSortedList); // // Output : Sorting using Bubble Sort !
+
+      sorter = new Sorter(new QuickSortStrategy());
+      sorter.Sort(unSortedList); // // Output : Sorting using Quick Sort !
+
+      Console.ReadLine();
+    }
+  }
+}

StrategyPattern/StrategyPattern.csproj

@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>