What is the time complexity of deleting an element from a stack?
Practice Questions
Q1
What is the time complexity of deleting an element from a stack?
O(1)
O(n)
O(log n)
O(n^2)
Questions & Step-by-Step Solutions
What is the time complexity of deleting 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, meaning the last element added is the first one to be removed.
Step 2: Identify the operation for deleting an element from a stack. This operation is called 'pop'.
Step 3: Recognize that the 'pop' operation removes the top element of the stack.
Step 4: Note that removing the top element does not depend on the number of elements in the stack. It only involves accessing the top element and removing it.
Step 5: Since the time taken to perform the 'pop' operation is constant, we say it takes O(1) time.
