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来源：互联网发布：游戏测试面试题算法编辑：程序博客网时间：2024/06/05 04:54

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace StringSort
{
class Program
{
static void Main(string[] args)
{
StringSortAndNum(“ajhsdZzfjhAZKJSDK”);
Console.ReadKey();
}

    static void StringSortAndNum(String str)    {        String s1 = "";        for (int i = 65; i <91; i++)        {            foreach (char item in str)            {                if ((int)item == i)                {                    s1 += item;                }            }            foreach (char item in str)            {                if ((int)item == i+('a'-'A'))                {                    s1 += item;                }            }        }        Dictionary<char, int> strAndNum = new Dictionary<char, int>();        foreach (char item in s1)        {            if (strAndNum.ContainsKey(item))            {                strAndNum[item]++;            }            else            {                strAndNum.Add(item,1);            }        }        Console.Write("排序后：");        Console.WriteLine(s1);        foreach (var item in strAndNum)        {            Console.WriteLine("{0}出现次数:{1}",item.Key,item.Value);        }    }}

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