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

Practice Questions

Q1
In a queue, what is the time complexity of enqueue operation?
  1. O(1)
  2. O(n)
  3. O(log n)
  4. O(n^2)

Questions & Step-by-Step Solutions

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.
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