In a queue, what happens when an element is dequeued?
Practice Questions
Q1
In a queue, what happens when an element is dequeued?
It is removed from the front
It is removed from the back
It is moved to the front
It is added to the back
Questions & Step-by-Step Solutions
In a queue, what happens when an element is dequeued?
Step 1: Understand what a queue is. A queue is a collection of items where the first item added is the first one to be removed. This is called FIFO (First In, First Out).
Step 2: Identify the front of the queue. The front is where the first item is located.
Step 3: When you perform a dequeue operation, you are removing the item at the front of the queue.
Step 4: After the item is removed, the next item in line becomes the new front of the queue.
Step 5: The size of the queue decreases by one after the dequeue operation.
