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What is the time complexity of pushing an element onto a stack implemented using

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Question: What is the time complexity of pushing an element onto a stack implemented using a linked list?

Options:

  1. O(1)
  2. O(n)
  3. O(log n)
  4. O(n^2)

Correct Answer: O(1)

Solution: 

Pushing an element onto a stack implemented using a linked list takes constant time, O(1), because it involves adding a new node at the head of the list.

What is the time complexity of pushing an element onto a stack implemented using

Practice Questions

Q1
What is the time complexity of pushing an element onto a stack 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 pushing an element onto a stack implemented using a linked list?
  • Step 1: Understand what a stack is. A stack is a data structure that follows the Last In, First Out (LIFO) principle.
  • Step 2: Know that a stack can be implemented using a linked list. In this case, each element in the stack is a node in the linked list.
  • Step 3: When you push an element onto the stack, you need to add a new node to the linked list.
  • Step 4: To add a new node at the head of the linked list, you simply create the new node and adjust the pointers.
  • Step 5: This operation of adding a new node at the head takes a fixed amount of time, regardless of the number of elements in the stack.
  • Step 6: Therefore, the time complexity for pushing an element onto the stack is O(1), which means it takes constant time.
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