import java.util.Arrays;

class RemoveDuplicateFromArray

{

public static int removeDuplicateFromArray(int[] arr,int length){

if(length == 0 || length == 1){

return length;

}

int j = 0;

int temp[] = new int[length];

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

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

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

}

}

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

for(int i = 0 ; i < j ; i++){

arr[i] = temp[i];

}

return j;

}

public static void main(String[] args)

{

int[] arr = {1,2,3,4,5,6,5,6};

Arrays.sort(arr);

int len = arr.length;

int length = removeDuplicateFromArray(arr,len);

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

System.out.print(arr[i]);

}

}

}