Queue Data Structure

In a school cafeteria, students line up to get their lunch. What is this line an example of?

• A list of collection with insertion and removal at the same end

• A list of collection with insertion at one end and removal at the other end

• A list of collection with random insertion and removal

• A list of collection with insertion and removal at any position

Scarlett is managing a line of customers at a ticket counter. Which operation is used to add a customer to the line?

• Enqueue

• Dequeue

• Front

• IsEmpty

Kai is managing a line of people waiting to buy tickets at a movie theater. Which operation should Kai use to remove a person from the front of the line?

• Enqueue

• Dequeue

• Front

• IsEmpty

Ethan is managing a line of customers at a bank. What is the time complexity of adding a customer to the end of the line and serving a customer from the front of the line?

• O(n)

• O(log n)

• O(1)

• O(n^2)

David is organizing a line of students for a school event using an array-based Queue. Where is the front of the Queue located?

• At the beginning of the array

• At the end of the array

• In the middle of the array

• At a random position in the array

Aria is organizing a circular seating arrangement for a group of friends. If she is currently at seat i, how does she calculate the next seat in the circle?

• i + 1

• i - 1

• (i + 1) modulo N

• (i - 1) modulo N

Avery is designing a new ticketing system for a theme park. What is the purpose of using a circular array in the Queue implementation for managing the line of visitors?

• To save memory

• To improve performance

• To allow for dynamic resizing

• To utilize unused cells in the array

Emma is organizing a circular queue for a game at a school event. What is the condition to check if the queue is full in a circular array-based implementation?

• rear == front

• rear + 1 == front

• rear - 1 == front

• rear + 1 modulo N == front

Aiden is managing a circular queue of tasks in a computer system. What is the condition to check if the queue is empty in this circular array-based implementation?

• rear == -1

• front == -1

• rear == front

• front + 1 modulo N == rear

Mason is managing a line of customers at a coffee shop. What is the purpose of the front operation in this queue?

• To add an element to the Queue

• To remove an element from the Queue

• To check if the Queue is empty

• To check the element at the front of the Queue