词频统计-功能一

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

namespace wf
{
    class Program
    {
        
        static void Main(string[] args)
        {
            
            string theFileName;
            Console.Write(">type ");
            theFileName=Console.ReadLine();
            string thePath = @"D:\vs2010\test.txt";
            //string thePath = null;
            //Console.Write(">type ");
            //thePath = Console.ReadLine();
            //StreamReader content = File.OpenText(thePath);

            //读取文件内容并输出
            StreamReader reader = new StreamReader(thePath);
            string sline=reader.ReadLine();
            Console.WriteLine(sline.ToString());
            sline = sline.ToLower();//全部变为小写字母
            //定义一个字符数组
            char[] c = { ‘ ‘, ‘,‘, ‘.‘, ‘?‘, ‘!‘, ‘:‘, ‘;‘, ‘\‘‘, ‘\"‘ };
            //分隔字符串后产生的字符串数组
             string[] S = sline.Split(c);
             //Console.WriteLine();
             //Console.WriteLine(">wf -s test.txt");
            // Console.WriteLine("total " + S.Length);
            //建立哈希表
             Hashtable ha = new Hashtable();
             for (int i = 0; i < S.Length; i++)
             {
                  //判断文本是否进入
                  if (ha.ContainsKey(S[i]))
                   {
                       ha[S[i]] = (int)ha[S[i]] + 1;
                   }
                    else
                    {
                        ha.Add(S[i], 1);
                    }
                }
               //int sum = 0;
                string[] arrKey = new string[ha.Count];//存哈希表的键
                int[] arrValue = new int[ha.Count];//存哈希表的值
                ha.Keys.CopyTo(arrKey, 0);
                ha.Values.CopyTo(arrValue, 0);
                Console.WriteLine();
                Console.WriteLine(">wf -s test.txt");
                Console.WriteLine("total " + ha.Count);
                Console.WriteLine();
               
                Array.Sort(arrValue,arrKey);//按哈希表的值进行排序
               
                //遍历哈希表
                //foreach (DictionaryEntry de in ha)
                //{
                //输出
                // Console.WriteLine(de.Key + ":" + de.Value);
                 //Console.Write(ha.Count);

                // }
                for (int i = arrKey.Length - 1; i >= 0; i--)
                {
                    if ((string)arrKey[i] != "")
                    {
                        Console.Write(arrKey[i].ToString() + ":");
                        Console.WriteLine(arrValue[i].ToString());
                    }
                }

        }
    }
}