private int countWords(String str) { 
  		int answer = 0; 
  		// Your code starts here 
  		ArrayList<String> count = new ArrayList<String>(); 
  		StringTokenizer tokenizer = new StringTokenizer(str); 
  		while(tokenizer.hasMoreTokens()){ 
  			String token = tokenizer.nextToken(); 
  			count.add(token); 
  			for(int i = 0; i< count.size();i++){ 
  				answer++; 
  			} 
  		} 
  		 
  		// Your code ends here 
  		return answer; 
  	}