Please write your solutions as clearly and concisely as possible.
Consider the following specification of an unbounded queue, where ":" stands for the concatenation operation of an element to a sequence, and "e" stands for the empty sequence.
Queue(e) =def= in(x).Queue(x) + empty.Queue(e) Queue(s:v) =def= in(x).Queue(x:s:v) + ^out(v).Queue(s)
The exercise consists in defining an "implementation" for the queue that corresponds (i.e. is weakly bisimilar to) the above specification. The implementation should be done similarly to the implementation of the Stack illustrated in the pages distributed in class (page 134 in the book "Communication and Concurrency" by Robin Milner).
Please add some comments to explain your solution so that the TA and I can understand it more easily.