C#统计词频出现的次数并排序

C#的读写问题中数据流的操作中的一个必备的案例，也是一个必备的了解

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Collections;

namespace ConsoleApplication1
{
    class Entry
    {
        private string strWord;

        public string Word
        {
            get { return strWord; }
        }

        private int iFrequence;

        public int Frequence
        {
            get { return iFrequence; }
        }

        public Entry（string word）
        {
            this.strWord = word;
            this.iFrequence = 1;
        }
        public Entry（string a int b）
        {
            this.strWord = a;
            this.iFrequence = b;
        }

        public void IncFreq（）
        {
            this.iFrequence++;
        }
    }

    class FileStat
    {

        public static void Run（string fileHTML string fileStore）
        {
            int k = 0;
            if （!File.Exists（fileHTML））
            {
                new FileNotFoundException（“无法打开文件 [“ + fileHTML + “]！“）;
            }

            StreamReader reader = new StreamReader（fileHTML）;
            ArrayList list = new ArrayList（）;
            ArrayList list1 = new ArrayList（）;
            string line;
            line = reader.ReadLine（）;
            while （line != null）
            {
                //Skip empty line
                if （!line.Equals（““））
                {
                    string[] splits = line.Split（new char[] { ‘ ‘ ‘\t‘ ‘‘ ‘.‘ ‘?‘ ‘!‘ ‘<‘ ‘>‘ ‘\\‘ ‘/‘ ‘:‘ }）;
                    foreach （string str in splits）
                    {
                        if （!str.Equals（““））
                        {
                            bool found = false;
                            foreach （Entry entry in list）
                            {
                                if （entry.Word.Equals（str StringComparison.OrdinalIgnoreCase））
                                {
                                    entry.IncFreq（）;
                                    found = true;
                                    break;
                                }
                            }
                            if （found == false）
                            {
                                list.Add（new Entry（str））;
                                k++;
                            }

                        }
                    }
                }
                line = reader.ReadLine（）;
            }
            reader.Close（）;

           
            string[] keyarray = new string[list.Count];
            int[] valuearray = new int[list.Count];
            int i = 0;
            foreach （Entry  skey in list）
            {
                keyarray[i] = Convert.ToString（skey.Word）;   //赋值
                valuearray[i] = Convert.ToInt32（skey.Frequence）;//赋值
                i++;
            }
            for （int a = 0; a < list.Count; a++）  //排序
            {
       

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件         34  2008-09-14 15:29  ConsoleApplication1\ConsoleApplication1\bin\Debug\a

     文件      20480  2008-09-15 21:57  ConsoleApplication1\ConsoleApplication1\bin\Debug\ConsoleApplication1.exe

     文件      17920  2008-09-15 21:57  ConsoleApplication1\ConsoleApplication1\bin\Debug\ConsoleApplication1.pdb

     文件       5632  2005-11-11 22:25  ConsoleApplication1\ConsoleApplication1\bin\Debug\ConsoleApplication1.vshost.exe

     文件       2026  2008-09-14 19:16  ConsoleApplication1\ConsoleApplication1\ConsoleApplication1.csproj

     文件        182  2008-09-15 22:14  ConsoleApplication1\ConsoleApplication1\obj\ConsoleApplication1.csproj.FileList.txt

     文件      20480  2008-09-15 21:57  ConsoleApplication1\ConsoleApplication1\obj\Debug\ConsoleApplication1.exe

     文件      17920  2008-09-15 21:57  ConsoleApplication1\ConsoleApplication1\obj\Debug\ConsoleApplication1.pdb

     文件       4709  2008-09-15 22:18  ConsoleApplication1\ConsoleApplication1\Program.cs

     文件       1209  2008-09-14 15:20  ConsoleApplication1\ConsoleApplication1\Properties\AssemblyInfo.cs

     文件        946  2008-09-14 15:20  ConsoleApplication1\ConsoleApplication1.sln

    ..A..H.     10240  2008-09-15 22:18  ConsoleApplication1\ConsoleApplication1.suo

     目录          0  2008-09-14 15:20  ConsoleApplication1\ConsoleApplication1\obj\Debug\TempPE

     目录          0  2008-09-14 15:28  ConsoleApplication1\ConsoleApplication1\bin\Debug

     目录          0  2008-09-15 21:57  ConsoleApplication1\ConsoleApplication1\obj\Debug

     目录          0  2008-09-14 19:14  ConsoleApplication1\ConsoleApplication1\bin

     目录          0  2008-09-14 15:20  ConsoleApplication1\ConsoleApplication1\obj

     目录          0  2008-09-14 15:20  ConsoleApplication1\ConsoleApplication1\Properties

     目录          0  2008-09-15 22:18  ConsoleApplication1\ConsoleApplication1

     目录          0  2008-09-14 15:20  ConsoleApplication1

----------- ---------  ---------- -----  ----

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