Building a Queue ADT

A queue data type is a list with some restrictions to the effect that the inserting operation (enqueue) can only be performed from one side (called the back) and the removing operation (dequeue) can only be performed from the other side (called the front). Similar to the Stack data type, we can develop the Queue data type by using the LinkedList data type. For the Enqueue() operation, we can adopt the InsertTail() operation in the LinkedList data type since we are going to insert an element from the back, which is similar to the Tail node in the LinkedList data type. Also, for the Dequeue() operation, we will use the implementation of the RemoveHead() operation in the LinkedList data type. The Queue data type is also known as the First In First Out (FIFO) data type since the element...