Start 13. Stacks and Queues 13. Stacks and QueuesΒΆ The Adapter design pattern is explored in the context of the STL containers stack and queue. 13.1. The Adapter pattern 13.1.1. Traditional adapter implementations 13.1.2. C++ adapter implementations 13.2. The stack class 13.2.1. Postfix Notation 13.3. The queue class 13.3.1. Circular queues 13.4. The deque class