日期:2014-05-17 浏览次数:21109 次
        private void NewMethod()
        {
            List<string> list = new List<string>();//List
            string s = string.Empty;
            if (textBox1.Text.Trim() != "")
            {
                char[] c = textBox1.Text.Trim().ToCharArray();
                for (int i = 0; i < c.Length; i++)
                {
                    int count = 0;
                    for (int j = 0; j < c.Length; j++)//相同的累加
                    {
                        if (c[i] == c[j])
                            count++;
                    }
                    s = c[i] + "=" + count;
                    if (list.IndexOf(s) == -1)//如果存在就不用加
                    {
                        list.Add(s);
                        this.textBox2.Text += s + "\r\n";
                    }
                }
            }
        }
------解决方案--------------------
不用list,用list是多余的。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Countstring
{
   class Program
   {
       static void Main(string[] args)
       {
           Console.WriteLine("请输入您要查询的字符串:\n");
           string s = Console.ReadLine();
    
           Console.WriteLine("该字符串中出现的字符的次数分别如下:\n");
           int count=0;
           for (int i = 0; i < s.Length;i++ )
           {
               //比较该字符在前面是否出现过?是,就跳过,因为前面统计了;否,开始统计
               int frontifsame = 0;
               for (int j = i - 1; j >= 0; j--)
               {
                   if (s[j] == s[i])
                   {
                       frontifsame++;
                       break;//比较该字符在前面是否出现过?是,就跳过,因为前面统计了;
                   }
               }
               if (frontifsame == 0)//比较该字符在前面是否出现过?否,开始统计
               {
                   count = 1;
                   for (int j = i + 1; j < s.Length; j++)
                   {
                       if (s[j] == s[i])
                       {
                           count++;
                       }
                   }
                   Console.WriteLine("{0}  在您输入的字符串中出现的次数为:  {1}.\n", s[i], count);
               }
           }
        
       }
   }
}
------解决方案--------------------
键盘输入如“ABefgt”的字母串,使用C#编程实现计算每个字母出现次数的程序。
都不很好 用sortlist
static void Main(string[] args)
        {
            string data = "asd646uio4asda .sdjhglajsdoajam] 4uio64aaaksd;ka;s";
            SortedList<char, int> charCount = new SortedList<char, int>();
            foreach (char i in data) 
            {
                if (!charCount.ContainsKey(i))
                {
                    charCount.Add(i, 1);
                }
                else 
                {
                    charCount[i]=charCount[i]+1;
                }
            }
            foreach (KeyValuePair<char, int> i in charCount)
            {
                Console.WriteLine(" "+i.Key+": "+i.Value);
            }
        }
------解决方案--------------------
粗略做了个,lz看看
  class Program
   {
       public static int numWord(string word, string[] wordList)//查询字母在字符数组中出现的次数查询
       {
           int cout = 0;
           for (int i = 0; i < wordList.Length; i++)
           {
               if (word.Equals(wordList[i], St