public static boolean otherCharactersFound(String s, char[] c){
    	boolean found = false;
    	for (int i=0; i<s.length(); i++) {
    		found = false;
    		for (int j=0; j<c.length; j++)
    			if (s.charAt(i)== c[j])
    				found = true;
    		if (!found)
    			return true;
    	}
    	return false;
    }