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Java Iterator Interface

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Questions and Answers

What is the purpose of the clear() method in the queue?

To remove all elements from the queue (correct)
To check if the queue is full
To add an element to the end of the queue
To retrieve the first element from the queue

What is the condition to check if the queue is full?

first == last + 1
first == 0 && last == size - 1 || first == last + 1 (correct)
first == 0 && last == -1
first == -1 && last == -1

What is the purpose of the dequeue() method?

To print the queue
To check if the queue is empty
To retrieve and remove the first element from the queue (correct)
To add an element to the end of the queue

In the LinkedList implementation, what is the method used to add an element to the queue?

add (A) Signup and view all the answers

What is the purpose of the firstEl() method?

To retrieve the first element from the queue without removing it (B) Signup and view all the answers

What is the purpose of the isEmpty() method?

To check if the queue is empty (D) Signup and view all the answers

What is the purpose of the isFull() method?

To check if the queue is full (A) Signup and view all the answers

In the Array implementation, what is the condition to check if the queue is empty?

first == -1 (A) Signup and view all the answers

What is the purpose of the enqueue() method?

To add an element to the end of the queue (B) Signup and view all the answers

In the LinkedList implementation, what is the method used to remove the first element from the queue?

removeFirst (C) Signup and view all the answers

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