content: class removeduplicates
  {
      // Function to remove duplicate elements
      // This function returns new size of modified
      // array.
      static int removeDuplicates(int arr[], int n)
      {
          // Return, if array is empty
          // or contains a single element
          if (n==0 || n==1)
              return n;
        
          int[] temp = new int[n];
           
          // Start traversing elements
          int j = 0;
          for (int i=0; i<n-1; i++)
              // If current element is not equal
              // to next element then store that
              // current element
              if (arr[i] != arr[i+1])
                  temp[j++] = arr[i];
           
          // Store the last element as whether
          // it is unique or repeated, it hasn't
          // stored previously
          temp[j++] = arr[n-1];  
           
          // Modify original array
          for (int i=0; i<j; i++)
              arr[i] = temp[i];
        
          return j;
      }
       
      public static void main (String[] args)
      {
          int arr[] = {1, 2, 2, 3, 4, 4, 4, 5, 5};
          int n = arr.length;
           
          n = removeDuplicates(arr, n);
    
          // Print updated array
          for (int i=0; i<n; i++)
             System.out.print(arr[i]+" ");
      }
  }