整数集合是由多个不同的整数构成。请根据下列要求，设计一个集合类。

（1）集合中的元素保存在一个一维数组中。

（2）在类中定义构造方法。在为对象赋初值的同时，保证集合中元素的唯一性。

（3）在类中实现“求两个集合的并集”的功能。

（4）在类中实现“求两个集合的交集”的功能。

（5）在main方法中完成相关测试。

-Integer set is composed of a plurality of different integers.Please according to the following requirements, design a collection class.



(1) the elements in the collection are preserved in a one-dimensional array.



(2) in the definition of the class structure method.In order for the object given initial value at the same time, to ensure the uniqueness of the elements in the collection.



(3) implemented in the class "for the union of the two sets of function".



(4) implemented in the class "and the intersection of the two sets of function".



(5) in the main method completes the related test.