/*

  * 由SharpDevelop创建。

  * 用户： David Huang

  * 日期: 2015/7/27

  * 时间: 10:22

  */

 using System;

 namespace Delegate_Book

 {

     class Program

     {

         delegate string GetAString();

         struct Currency

         {

             public uint Dollars;

             public ushort Cents;

             public Currency(uint Dollars,ushort Cents)

             {

                 this.Dollars=Dollars;

                 this.Cents=Cents;

             }

             public override string ToString()

             {

                 return string.Format("${0}.{1,2:00}",Dollars,Cents);

             } 

             public static string GetCurrencyUnit()

             {

                 return "Dollar";

             }

         }

         public static void Main(string[] args)

         {

             const int x = ;

             //GetAString getAString =new GetAString(x.ToString);

             GetAString getAString=x.ToString;

             Console.WriteLine(getAString());     

             Currency currency=new Currency(,);

             getAString=currency.ToString;

             Console.WriteLine(getAString());

             Console.WriteLine(new GetAString(new Currency(,).ToString)());

             getAString=Currency.GetCurrencyUnit;

             Console.WriteLine(getAString());

             Console.Write("Press any key to continue . . . ");

             Console.ReadKey(true);

         }

     }

 }

 /*

  * 由SharpDevelop创建。

  * 用户： David Huang

  * 日期: 2015/7/28

  * 时间: 14:31

  */

 using System;

 namespace MathOperations

 {

     static class MathOperations

     {

         public static double MutiplyByTwo(double value)

         {

             return *value;

         }

         public static double Square(double value)

         {

             return value*value;

         }

     }

     delegate double DoubleOp(double x);

     class Program

     {

         public static void Main(string[] args)

         {

             DoubleOp[] doubleOps={

                 MathOperations.MutiplyByTwo,

                 MathOperations.Square

             };

             foreach (var op in doubleOps) {

                 DoTheMath(op,2.5);

                 DoTheMath(op,3.5);

             }

             Func<double,double>[] doubleFuncs={

                 MathOperations.MutiplyByTwo,

                 MathOperations.Square

             };

             foreach (var func in doubleFuncs) {

                 DoTheFunc(func,2.5);

                 DoTheFunc(func,3.5);

             }

             Console.Write("Press any key to continue . . . ");

             Console.ReadKey(true);

         }

         static void DoTheMath(DoubleOp operation,double value)

         {

             double result=operation(value);

             Console.WriteLine(string.Format("vlaue is {0},result is {1}",value,result));

         }

         static void DoTheFunc(Func<double,double> func,double value)

         {

             var result = func(value);

             Console.WriteLine(string.Format("value is {0},result is {1}",value,result));

         }

     }

 }

 /*

  * 由SharpDevelop创建。

  * 用户： David Huang

  * 日期: 2015/7/29

  * 时间: 15:34

  */

 using System;

 using System.Linq;

 using System.Collections.Generic;

 namespace BubbleSorter

 {

     class Program

     {

         public static void Main(string[] args)

         {

             //int

             List<int> array=new List<int> {,,,,};

             Sort(array);

             Console.WriteLine(array.ConvertAll(i=>i.ToString()).Aggregate((current,next)=>string.Format("{0},{1}",current,next)).TrimEnd(','));

             //泛型

             List<int> list=new List<int> {,,,,};

             Sort(list,IsBiggerThan);

             Console.WriteLine(array.ConvertAll(i=>i.ToString()).Aggregate((current,next)=>string.Format("{0},{1}",current,next)).TrimEnd(','));

             //泛型

             List<Person> personList=new List<Person>{

                 new Person{Name="Tom",Age=},

                 new Person{Name="Jack",Age=},

                 new Person{Name="Penny",Age=},

                 new Person{Name="Lucy",Age=}

             };

             Sort(personList,IsOlderThan);

             foreach (Person person in personList) {

                 Console.WriteLine(person);

             }

             Console.Write("Press any key to continue . . . ");

             Console.ReadKey(true);

         }

         static bool IsOlderThan(Person p1,Person p2)

         {

             return p1.Age>p2.Age;

         }

         static bool IsBiggerThan(int a,int b)

         {

             return a>b;

         }

         static void Sort(IList<int> sortArray)

         {

             bool swapped=true;

             do

             {

                 swapped=false;

                 for (int i = ; i < sortArray.Count-; i++) {

                     if (sortArray[i]>sortArray[i+]) {

                         int tmp=sortArray[i];

                         sortArray[i]=sortArray[i+];

                         sortArray[i+]=tmp;

                         swapped=true;

                     }

                 }

             }while (swapped);

         }

         static void Sort<T>(IList<T> list,Func<T,T,bool> comparison)

         {

             bool swapped=true;

             do{

                 swapped=false;

                 for (int i = ; i < list.Count-; i++) {

                     if (comparison(list[i],list[i+])) {

                         T temp=list[i];

                         list[i]=list[i+];

                         list[i+]=temp;

                         swapped=true;

                     }

                 }

             }while(swapped);

         }

     }

     class Person

     {

         public string Name{get;set;}

         public int Age{get;set;}

         public override string ToString()

         {

             return string.Format("Name:{0},Age:{1}",Name,Age);

         }

     }

 }

 /*

  * 由SharpDevelop创建。

  * 用户： David Huang

  * 日期: 2015/7/30

  * 时间: 14:37

  */

 using System;

 namespace 多播

 {

     public static class MathOperations

     {

         public static void MutiplyByTwo(double value)

         {

             Console.WriteLine(string.Format("method: MutiplyByTwo, value: {0}, result: {1}",value,*value));

         }

         public static void Square(double value)

         {

             Console.WriteLine(string.Format("method: Square, value: {0}, result: {1}",value,value*value));

         }

     }

     class Program

     {

         public static void Main(string[] args)

         {

             Action<double> mathOperations=MathOperations.MutiplyByTwo;

             mathOperations+=MathOperations.Square;

             DoTheMath(mathOperations,2.5);

             DoTheMath(mathOperations,3.5);

             Console.Write("Press any key to continue . . . ");

             Console.ReadKey(true);

         }

         static void DoTheMath(Action<double> action,double value)

         {

             action(value);

         }

     }

 }

 /*

  * 由SharpDevelop创建。

  * 用户： David Huang

  * 日期: 2015/7/30

  * 时间: 16:19

  */

 using System;

 namespace 匿名

 {

     class Program

     {

         public static void Main(string[] args)

         {

             Func<int,int> anonDel=delegate(int i)

             {

                 return i*;

             };

             Console.WriteLine(anonDel());

             // TODO: Implement Functionality Here

             Console.Write("Press any key to continue . . . ");

             Console.ReadKey(true);

         }

     }

 }