关于如何去除数组中重复项

 

下面是三种实现的方式！

//c#代码

private void RemoveRepeat()

         {

              int x=0;

              int label;

              int[] b = new int[15];

              int[] a =new int[15]{1,0,3,3,0,5,5,6,4,8,9,2,9,5,1};

              for (int i=0;i<a.Length;i++)

              {

                   label=0;//标记是否有相同项

                   for(int j=0;j<x;j++)

                   {

                       if(b[j]==a[i])

                            label=1;

                      

                   }

                   if(label==0)

                   {

                       b[x]=a[i];

                       x++;

                   }

              }

              for(int k=0;k<x;k++)

              {

                   Response.Write(b[k]);//输出数组b[]

                   if(k!=x-1)

                       Response.Write(",");

              }

         }

//第一种字符型javascript代码

function RemoveRepeat()

         {

              var tmp = new Array()

              var a =new Array("AAAA","B","A","A","B","F","D","C","A","B","A","A","B","C","t")

              tmp=a

              for (var i=0;i<a.length;i++)

              {

                   for(j=i+1;j<a.length;j++)

                   {

                       if(a[i]==a[j]) tmp[i]=null

                   }

              }

              var m = 0,ok = new Array()

              for(k=0;k<tmp.length;k++)

              {

                   if(tmp[k])

                       ok[m++] = tmp[k]

              }

              alert(ok)

         }

//第二种数字型javascript代码

function ddd()

{

     oldArray = [1,2,1,3,3,4,5,5,6,7,2,2,9,8,9]

     var str = oldArray.join(" ");

     var reg = /([^ ]+)(.*) /1/g; //利用正则表达式

     while(str.match(reg))str=str.replace(reg,"$1$2")

     alert(str.split(" "));

}