In a queue, what is the time complexity of enqueue operation?

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Question: In a queue, what is the time complexity of enqueue operation?

Options:

Correct Answer: O(1)

Solution:

The enqueue operation in a queue can be performed in constant time, O(1).

In a queue, what is the time complexity of enqueue operation?

In a queue, what is the time complexity of enqueue operation?

Step 1: Understand what a queue is. A queue is a data structure that follows the First In First Out (FIFO) principle.
Step 2: Know what the enqueue operation is. Enqueue means adding an element to the back of the queue.
Step 3: Realize that adding an element to the back of the queue does not depend on the number of elements already in the queue.
Step 4: Since the time taken to add an element is the same regardless of how many elements are in the queue, we say it takes constant time.
Step 5: Constant time is represented as O(1) in Big O notation.

Time Complexity – Understanding how the time taken for an operation scales with the size of the data structure.
Queue Data Structure – Knowledge of how a queue operates, specifically the enqueue operation.