c# list 删除重复元素

输入的数组格式:

strinput=”001,002,003,001,001,003,005”;

要求输出的格式:

stroutput=”001,002,003,005”;

引用命名空间：

using System.Collections.Generic;

string strinput="001,002,003,001,001,003,005";

string strouput="";

Array stringArray = strinput.Split(‘,’);

List<string> listString = new List<string>();

//遍历删除重复项

foreach (string eachString in stringArray)

{

if (!listString.Contains(eachString))

listString.Add(eachString);

}

//遍历输出

foreach (string string1 in listString) //测试值

{

strouput=strouput+string1+’,';

}

strouput=strouput.Substring(0,strouput.Length-1);

//strouput为所输出的字符串