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]); } } }