What is the time complexity of inserting an element into a stack?
Practice Questions
Q1
What is the time complexity of inserting an element into a stack?
O(1)
O(n)
O(log n)
O(n log n)
Questions & Step-by-Step Solutions
What is the time complexity of inserting an element into 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: Learn about the push operation. The push operation is how we add (insert) an element to the top of the stack.
Step 3: Recognize that adding an element to the top of the stack does not depend on the number of elements already in the stack.
Step 4: Realize that since the push operation only involves placing the new element at the top, it takes the same amount of time regardless of the stack's size.
Step 5: Conclude that the time it takes to insert an element (push) is constant, which is represented as O(1) in Big O notation.
