import java.util.ArrayList;

public class Words
{
   /**
      Returns all short words (length <= 3) in an array of words
      @param words an array of strings
      @return an array list containing the short words in words
   */
   public ArrayList<String> shortWords(String[] words)
   {
      ArrayList list = new ArrayList();
      for(String a : words)
      {
         if(a.length() <= 3){list.add(a);}
      }
      return list;
   }
}