如何在java中实现类似于set::swap的功能？

Question

I read the documentation of the C++ set::swap function here and it says that it swaps the content of the sets in constant time . I need similar functionality in Java,

In java, item access in the set is constant time but I couldn't find a similar function that could swap the content of the sets in constant time and also preserves the variable references.

I was trying to implement this algorithm in Java. What could I use from Java which is similar to this swap function in the referred code?

I am also fine with manual implementation.

Thanks,

Answer 1

基本上你只想交换每个设置对象内容的指针，我不认为java允许交换引用，因为一旦你设置它就不能改变。