Implementing a Min Stack

The video tutorial explains the implementation of a Min Stack class, detailing the initialization, push, pop, and get min operations. It covers how to maintain a stack and a min stack to efficiently track the minimum value. The tutorial also hints at a future discussion on Max Stack.

What is the primary purpose of the Min Stack class?

• To store only the maximum values

• To sort elements in ascending order

• To perform arithmetic operations on stack elements

• To maintain a stack and track the minimum value

When adding a new element to the stack, what condition is checked for the min stack?

• If the new element is greater than the last element

• If the min stack is full

• If the min stack is empty or the new element is less than the current minimum

• If the new element is a duplicate

What happens if the new element is not the minimum value during a push operation?

• It is removed from the stack

• It replaces the current minimum

• It is ignored for the min stack

• It is added to the min stack

During the pop operation, why is it important to compare the last values of both stacks?

• To maintain synchronization between the stack and min stack

• To verify if the last element is the maximum

• To check if the stack is sorted

• To ensure the stack is not empty

What is the result of the pop operation if the last values of both stacks are equal?

• Only the stack is popped

• Only the min stack is popped

• Both stacks are popped

• No action is taken

What does the top operation return?

• The first value of the stack

• The last value of the stack

• The minimum value in the stack

• The maximum value in the stack

How does the getMin operation differ from the top operation?

• It returns the maximum value

• It returns the first value

• It returns the minimum value

• It returns the last value