public static void main(String[] args){
        System.out.println("Hello World");
        String s ="aab";
        List<List<String>> result = new ArrayList<List<String>>();
        result = new Palindrome_Partitioning().partition(s);
        for(int i = 0 ; i< result.size();i++)
            System.out.println(Arrays.toString(result.get(i).toArray()));
        System.out.println("12345".substring(5));
    }