[推荐]C# 如何消除字符串数组的重复项的函数

//演示1

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

namespace 排除重复行
{
    class Program
    {
        static void Main(string[] args)
        {
            String[] a ={ "1", "1", "2", "1", "1", "3", "1", "1", };
            Console.WriteLine("原数组长度:    {0}", a.Length);
            Console.WriteLine("排除后数组长度:{0}",RemoveDup(a).Length);
            Console.ReadKey();
        }
        public static String[] RemoveDup(String[] myData)
        {
            if (myData.Length > 0)
            {
                Array.Sort(myData);

                int size = 1; //at least 1 
                for (int i = 1; i < myData.Length; i++)
                    if (myData[i] != myData[i - 1])
                        size++;

                String[] myTempData = new String[size];

                int j = 0;

                myTempData[j++] = myData[0];

                for (int i = 1; i < myData.Length; i++)
                    if (myData[i] != myData[i - 1])
                        myTempData[j++] = myData[i];

                return myTempData;
            }

            return myData;
        }
    }
}

//演示2

using System;
using System.Linq;//有了Linq很多事变的简单了

namespace 排除重复行
{
    class Program
    {
        static void Main(string[] args)
        {
            String[] a ={ "1", "1", "2", "1", "1", "3", "1", "1", };
            Console.WriteLine("原数组长度:    {0}", a.Length);
            Console.WriteLine("排除后数组长度:{0}",a.Distinct<string>().ToArray().Length);
            Console.ReadKey();
         }
     } 
}