What is the time complexity of deleting an element from a queue implemented usin

Practice Questions

Q1
What is the time complexity of deleting an element from a queue implemented using a linked list?
  1. O(1)
  2. O(n)
  3. O(log n)
  4. O(n^2)

Questions & Step-by-Step Solutions

What is the time complexity of deleting an element from a queue implemented using a linked list?
  • 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 that a queue can be implemented using a linked list. In a linked list, each element (node) points to the next one.
  • Step 3: Identify where the deletion happens. In a queue, we usually delete the element from the front.
  • Step 4: Recognize that deleting the front element of a linked list involves changing the head pointer to the next node.
  • Step 5: Realize that this operation (changing the head pointer) takes a constant amount of time, regardless of the number of elements in the queue.
  • Step 6: Conclude that the time complexity for deleting an element from the front of a queue implemented with a linked list is O(1).
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