数组去重

package my_src;

public class array_div_reapt
{
public static void array_div(String []a)
{
int k=0;

for(int i=0;i<a.length-1;i++)
{
for(int j=i+1;j<a.length;j++)
{
if(a[i]==a[j])
{
a[j]=null;
}
}
}
for(int m=0,p=0;m<a.length;m++)
{
if(a[m]!=null)
{
p++;
}
k=p;
}
String [] temp=new String[k];

for(int m=0,p=0;m<a.length;m++)
{
if(a[m]!=null)
{
temp[p]=a[m];
p++;
}

}

/******输出*********/
for (String element:a)
{
System.out.print(element+"--***--");
}

System.out.println();
for (String element:temp)
{
System.out.print(element+"--***--");
}

}

public static void main(String[] args)
{
String[] test={"1","2","y","p","3","4","5","1","2","y","1","2","6","r"};
array_div(test);
}

}