#403, 2.5.33 Finished

Author: ikesnowy

2 Sorting/2.5/2.5.33/2.5.33.csproj

@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{71E47859-80B4-4C75-B1FC-2C022B7E13E9}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>_2._5._33</RootNamespace>
+    <AssemblyName>2.5.33</AssemblyName>
+    <TargetFrameworkVersion>v4.7</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <Deterministic>true</Deterministic>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Program.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="TransactionGenerator.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\SortApplication\SortApplication.csproj">
+      <Project>{121d6b05-a47f-4c1c-bad8-ee4e5a245c8e}</Project>
+      <Name>SortApplication</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>

2 Sorting/2.5/2.5.33/App.config

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7" />
+    </startup>
+</configuration>

2 Sorting/2.5/2.5.33/Program.cs

@@ -0,0 +1,64 @@
+using System;
+using System.Diagnostics;
+using SortApplication;
+
+namespace _2._5._33
+{
+    /*
+     * 2.5.33
+     * 
+     * 随机交易。
+     * 开发一个接受参数 N 的生成器，
+     * 根据你能想到的任意假设条件生成 N 个随机的 Transaction 对象
+     * （请见练习 2.1.21 和 2.1.22）。
+     * 对于 N=10^3、10^4、10^5 和 10^6，
+     * 比较用希尔排序、归并排序、快速排序和堆排序将 N 个交易排序的性能。
+     * 
+     */
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Stopwatch stopwatch = new Stopwatch();
+            ShellSort shellSort = new ShellSort();
+            MergeSort mergeSort = new MergeSort();
+            QuickSort quickSort = new QuickSort();
+
+            int n = 1000;
+            int nMultipleBy10 = 4;
+            for (int i = 0; i < nMultipleBy10; i++)
+            {
+                Console.WriteLine("n=" + n);
+                Transaction[] trans = TransactionGenerator.Generate(n);
+
+                Transaction[] testCase = new Transaction[n];
+
+                trans.CopyTo(testCase, 0);
+                stopwatch.Restart();
+                shellSort.Sort(testCase);
+                stopwatch.Stop();
+                Console.WriteLine("Shell Sort: " + stopwatch.ElapsedMilliseconds + " ms");
+
+                trans.CopyTo(testCase, 0);
+                stopwatch.Restart();
+                mergeSort.Sort(testCase);
+                stopwatch.Stop();
+                Console.WriteLine("Merge Sort: " + stopwatch.ElapsedMilliseconds + " ms");
+
+                trans.CopyTo(testCase, 0);
+                stopwatch.Restart();
+                quickSort.Sort(testCase);
+                stopwatch.Stop();
+                Console.WriteLine("Quick Sort: " + stopwatch.ElapsedMilliseconds + " ms");
+
+                trans.CopyTo(testCase, 0);
+                stopwatch.Restart();
+                Heap.Sort(testCase);
+                stopwatch.Stop();
+                Console.WriteLine("Shell Sort: " + stopwatch.ElapsedMilliseconds + " ms");
+
+                n *= 10;
+            }
+        }
+    }
+}

2 Sorting/2.5/2.5.33/Properties/AssemblyInfo.cs

@@ -0,0 +1,35 @@
+using System.Reflection;
+using System.Runtime.InteropServices;
+
+// 有关程序集的一般信息由以下
+// 控制。更改这些特性值可修改
+// 与程序集关联的信息。
+[assembly: AssemblyTitle("2.5.33")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("2.5.33")]
+[assembly: AssemblyCopyright("Copyright ©  2019")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// 将 ComVisible 设置为 false 会使此程序集中的类型
+//对 COM 组件不可见。如果需要从 COM 访问此程序集中的类型
+//请将此类型的 ComVisible 特性设置为 true。
+[assembly: ComVisible(false)]
+
+// 如果此项目向 COM 公开，则下列 GUID 用于类型库的 ID
+[assembly: Guid("71e47859-80b4-4c75-b1fc-2c022b7e13e9")]
+
+// 程序集的版本信息由下列四个值组成: 
+//
+//      主版本
+//      次版本
+//      生成号
+//      修订号
+//
+// 可以指定所有值，也可以使用以下所示的 "*" 预置版本号和修订号
+// 方法是按如下所示使用“*”: :
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

2 Sorting/2.5/2.5.33/TransactionGenerator.cs

@@ -0,0 +1,69 @@
+using System;
+using System.Text;
+using SortApplication;
+
+namespace _2._5._33
+{
+    /// <summary>
+    /// 随机交易生成器。
+    /// </summary>
+    class TransactionGenerator
+    {
+        private static Random random = new Random();
+
+        /// <summary>
+        /// 生成 n 条随机交易记录。
+        /// </summary>
+        /// <param name="n">交易记录的数量。</param>
+        /// <returns></returns>
+        public static Transaction[] Generate(int n)
+        {
+            Transaction[] trans = new Transaction[n];
+            for (int i = 0; i < n; i++)
+            {
+                trans[i] = new Transaction
+                    (GenerateName(), 
+                    GenerateDate(), 
+                    random.NextDouble() * 1000);
+            }
+            return trans;
+        }
+
+        /// <summary>
+        /// 获取随机姓名。
+        /// </summary>
+        /// <returns></returns>
+        private static string GenerateName()
+        {
+            int nameLength = random.Next(4, 7);
+            StringBuilder sb = new StringBuilder();
+
+            sb.Append(random.Next('A', 'Z' + 1));
+            for (int i = 1; i < nameLength; i++)
+                sb.Append(random.Next('a', 'z' + 1));
+
+            return sb.ToString();
+        }
+
+        /// <summary>
+        /// 获取随机日期。
+        /// </summary>
+        /// <returns></returns>
+        private static Date GenerateDate()
+        {
+            int year = random.Next(2017, 2019);
+            int month = random.Next(1, 13);
+            int day;
+            if (month == 2)
+                day = random.Next(1, 29);
+            else if ((month < 8 && month % 2 == 1) ||
+                (month > 7 && month % 2 == 0))
+                day = random.Next(1, 32);
+            else
+                day = random.Next(1, 31);
+
+            Date date = new Date(month, day, year);
+            return date;
+        }
+    }
+}

2 Sorting/2.5/SortApplication/Date.cs

@@ -0,0 +1,102 @@
+using System;
+
+namespace SortApplication
+{
+    public class Date : IComparable<Date>
+    {
+        public int Month { get; }   // 月
+        public int Day { get; }     // 日
+        public int Year { get; }    // 年
+
+        /// <summary>
+        /// 构造函数。
+        /// </summary>
+        /// <param name="date">形如 "05/31/2017" 的字符串。</param>
+        public Date(string date)
+        {
+            string[] a = date.Split('/');
+            if (a.Length != 3)
+                throw new ArgumentException("Illgal Date");
+            this.Month = int.Parse(a[0]);
+            this.Day = int.Parse(a[1]);
+            this.Year = int.Parse(a[2]);
+        }
+
+        /// <summary>
+        /// 构造函数。
+        /// </summary>
+        /// <param name="m">交易月份。</param>
+        /// <param name="d">交易日。</param>
+        /// <param name="y">交易年份。</param>
+        public Date(int m, int d, int y)
+        {
+            this.Month = m;
+            this.Day = d;
+            this.Year = y;
+        }
+
+        /// <summary>
+        /// 返回形如 05/22/2017 的字符串。
+        /// </summary>
+        /// <returns></returns>
+        public override string ToString()
+        {
+            return this.Month + "/" + this.Day + "/" + this.Year;
+        }
+
+        /// <summary>
+        /// 比较两个日期是否相同。
+        /// </summary>
+        /// <param name="obj">需要比较的另一个对象。</param>
+        /// <returns></returns>
+        public override bool Equals(object obj)
+        {
+            if (obj == this)
+                return true;
+            if (obj == null)
+                return false;
+            if (obj.GetType() != this.GetType())
+                return false;
+            Date that = (Date)obj;
+            return (this.Year == that.Year) && (this.Month == that.Month) && (this.Day == that.Day);
+        }
+
+        /// <summary>
+        /// 获取日期的哈希值。
+        /// </summary>
+        /// <returns></returns>
+        public override int GetHashCode()
+        {
+            int hash = 17;
+            hash = 31 * hash + this.Month;
+            hash = 31 * hash + this.Year;
+            hash = 31 * hash + this.Day;
+            return hash;
+        }
+
+        /// <summary>
+        /// 比较两个日期的先后。
+        /// </summary>
+        /// <param name="other">另一个日期。</param>
+        /// <returns></returns>
+        public int CompareTo(Date other)
+        {
+            if (this.Year > other.Year)
+                return 1;
+            else if (this.Year < other.Year)
+                return -1;
+
+            if (this.Month > other.Month)
+                return 1;
+            else if (this.Month < other.Month)
+                return -1;
+
+            if (this.Day > other.Day)
+                return 1;
+            else if (this.Day < other.Day)
+                return -1;
+
+            return 0;
+        }
+    }
+}

2 Sorting/2.5/SortApplication/InsertionSort.cs

@@ -1,5 +1,4 @@
 using System.Collections.Generic;
-using System.Diagnostics;
 
 namespace SortApplication
 {
@@ -26,9 +25,9 @@ public override void Sort<T>(T[] a)
                 {
                     Exch(a, j, j - 1);
                 }
-                Debug.Assert(IsSorted(a, 0, i));
+                // Debug.Assert(IsSorted(a, 0, i));
             }
-            Debug.Assert(IsSorted(a));
+            // Debug.Assert(IsSorted(a));
         }
 
         /// <summary>
@@ -46,9 +45,9 @@ public void Sort<T>(T[] a, IComparer<T> c)
                 {
                     Exch(a, j, j - 1);
                 }
-                Debug.Assert(IsSorted(a, 0, i, c));
+                // Debug.Assert(IsSorted(a, 0, i, c));
             }
-            Debug.Assert(IsSorted(a, c));
+            // Debug.Assert(IsSorted(a, c));
         }
     }
 }

2 Sorting/2.5/SortApplication/QuickSort.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Diagnostics;
 
 namespace SortApplication
 {
@@ -22,7 +21,7 @@ public override void Sort<T>(T[] a)
         {
             Shuffle(a);
             Sort(a, 0, a.Length - 1);
-            Debug.Assert(IsSorted(a));
+            // Debug.Assert(IsSorted(a));
         }
 
         /// <summary>