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Chapter 18: Problem 20

The two ADTs in the Standard Template Library that exhibit queue-like behavior are __________ and __________.

Short Answer

Expert verified
Answer: The two ADTs in the C++ Standard Template Library that exhibit queue-like behavior are the queue class and the deque class.

Step by step solution

01

Understanding Queue-like behavior

Queue-like behavior refers to the operations in a data structure that follow the FIFO principle. In C++, STL provides several container classes which show different types of behavior.
02

Identifying the first ADT with queue-like behavior

The first ADT in the STL that exhibits queue-like behavior is "queue". The queue class template allows us to perform basic operations such as push, pop, front, and back. Here's a simple example of using a queue: ```cpp #include #include int main() { std::queue my_queue; // Adding elements to the queue my_queue.push(10); my_queue.push(20); my_queue.push(30); // Accessing the front element std::cout << "Front element: " << my_queue.front() << std::endl; // Removing the front element my_queue.pop(); return 0; } ```
03

Identifying the second ADT with queue-like behavior

The second ADT in the STL that exhibits queue-like behavior is "deque" (Double Ended Queue). A deque is a container class that allows elements to be inserted and removed efficiently at both ends. We can use a deque as a queue by only operating on one end of the deque. Here's an example of using a deque as a queue: ```cpp #include #include int main() { std::deque my_deque; // Adding elements to the deque my_deque.push_back(10); my_deque.push_back(20); my_deque.push_back(30); // Accessing the front element std::cout << "Front element: " << my_deque.front() << std::endl; // Removing the front element my_deque.pop_front(); return 0; } ``` So, the two ADTs in the Standard Template Library that exhibit queue-like behavior are the queue class and the deque class.

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Most popular questions from this chapter

Suppose the following operations are performed on an empty queue: enqueue(5); enqueue(7); dequeue(); enqueue(9); enqueue(12); dequeue(); enqueue(10); Insert numbers in the following diagram to show what will be stored in the static stack after the operations above have executed.

Describe two operations that static stacks must perform.

T F The STL stack container’s pop operation does not retrieve the top element of the stack, it just removes it.

Suppose the following operations are performed on an empty stack: push(0); push(9); push(12); push(1); Insert numbers in the following diagram to show what will be stored in the static stack after the operations above have executed.

Write two different code segments that may be used to wrap an index back around to the beginning of an array when it moves past the end of the array. Use an if/else statement in one segment and modular arithmetic in the other.
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