public static void main(String [] args)
{
        //Create LinkedSet and add items with duplicates
        LinkedSet<String> str = new LinkedSet<String>();
        str.add("john");
        str.add("adam");
        str.add("jess");
        str.add("rob");
        str.add("john");
        str.add("jess");
        str.add("adam");
        str.add("john");

        System.out.println(str.size());
        str.put();

        //remove john
        str.remove("rob");
        System.out.println(str.size());
        str.put();
        System.out.println(str.contains("john"));

        //remove rob
        str.remove("john");
        System.out.println(str.size());
        str.put();
        System.out.println(str.contains("rob"));

        //remove adam
        str.remove("adam");
        System.out.println(str.size());
        str.put();
        System.out.println(str.contains("adam"));

        //remove jess
        str.remove("jess");
        System.out.println(str.size());
        str.put();
        System.out.println(str.contains("jess"));

        //after removing all items, add something again
        str.add("joe");
        str.put();
        System.out.println(str.contains("joe"));
        System.out.println(str.size());

}