code: public static final boolean contains(char[] characters, char[] array)
  	{
  		for (int i = array.length; --i >= 0;)
  		{
  			for (int j = characters.length; --j >= 0;)
  			{
  				if (array[i] == characters[j])
  				{
  					return true;
  				}
  			}
  		}
  		return false;
  	}
docs: Answers true if the array contains an occurrence of one of the characters, false otherwise. <br>
  <br>
  For example:
  <ol>
  <li>
  
  <pre>
  characters = { 'c', 'd' }
  array = { 'a', ' b'  }
  result =&gt; false
  </pre>
  
  </li>
  <li>
  
  <pre>
  characters = { 'c', 'd' }
  array = { 'a', ' b', 'c'  }
  result =&gt; true
  </pre>
  
  </li>
  </ol>
  
  @param characters
  the characters to search
  @param array
  the array in which the search is done
  @return true if the array contains an occurrence of one of the characters, false otherwise.
  @throws NullPointerException
  if array is null.