What is the time complexity of a queue's enqueue operation using a linked list?
Practice Questions
Q1
What is the time complexity of a queue's enqueue operation using a linked list?
O(1)
O(n)
O(log n)
O(n log n)
Questions & Step-by-Step Solutions
What is the time complexity of a queue's enqueue operation 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 what enqueue means. Enqueue is the operation of adding an element to the end of the queue.
Step 3: Recognize that a linked list is a way to store elements where each element points to the next one.
Step 4: In a linked list, to add an element at the end, you need to find the last element.
Step 5: If you keep a pointer to the last element of the linked list, you can add a new element directly after it.
Step 6: Adding an element after the last one (the tail) does not depend on the number of elements in the list, so it takes the same amount of time regardless of the list size.
Step 7: Therefore, the time complexity for the enqueue operation in a linked list is O(1), which means it takes constant time.
