public class Words
{
   /**
      Returns the nth short word (length <= 3) in an array.
      @param words an array of strings
      @param n an integer > 0
      @return the nth short word in words, or the empty string if there is
      no such word
   */
   public String nthShortWord(String[] words, int n)
   {
      int count = 1;
      for(String a : words)
      {
         if(a.length() <= 3)
         {
            if(count == n){return a;}
            else{count++;}
         }
      }
      return "";
   }
}