Java删除重复元素

import java.util.Arrays;

public class Tester {

   public static int[] removeDuplicateElements(int arr[]){

      int n = arr.length;

      int[] temp = new int[n];

      int j = 0;

      for (int i=0; i<n-1; i++){

         if (arr[i] != arr[i+1]){

            temp[j++] = arr[i];

         }

      }

      temp[j++] = arr[n-1];    



      return temp;



    }



    public static void main (String[] args) {

       int arr[] = {10,70,30,90,20,20,30,40,70,50};

       //sort the array

       Arrays.sort(arr);

       int[] result = removeDuplicateElements(arr);

       //printing array elements

       for (int i=0; i<result.length; i++)  {

          if(result[i] != 0){

             System.out.print(result[i]+" ");

          }        

       }

   }

}