In a stack, what is the time complexity of the 'top' operation?

In a stack, what is the time complexity of the 'top' operation?

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 the 'top' operation does. The 'top' operation retrieves the element that is at the top of the stack without removing it.
Step 3: Consider how the 'top' operation works. It simply looks at the top element and gives it back.
Step 4: Realize that looking at the top element does not require any loops or extra steps. It is a direct access operation.
Step 5: Conclude that since it takes a constant amount of time to access the top element, the time complexity is O(1).

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