What is the time complexity of popping an element from a stack?

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Question: What is the time complexity of popping an element from a stack?

Options:

Correct Answer: O(1)

Solution:

Popping an element from a stack is also done in constant time, O(1), as it involves removing the top element.

What is the time complexity of popping an element from a stack?

What is the time complexity of popping an element from a stack?

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 what 'popping' means. Popping an element means removing the top element from the stack.
Step 3: Realize that to pop an element, you only need to access the top element and remove it.
Step 4: Recognize that accessing and removing the top element does not depend on the number of elements in the stack.
Step 5: Conclude that since the operation takes the same amount of time regardless of the stack size, it is considered constant time.
Step 6: Therefore, the time complexity of popping an element from a stack is O(1).

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