From 0 to 1 Data Structures & Algorithms in Java - Find The Minimum Element In A Stack In Constant Time

The video tutorial explains how to find the minimum element in a stack in constant time using a dual stack approach. It begins by discussing the limitations of traditional methods, which require iterating through the stack, and introduces a more efficient solution using two stacks: one for the actual elements and another for tracking the minimum elements. The tutorial includes a visual demonstration and a detailed code implementation, ensuring that the minimum element can be accessed in constant time regardless of stack operations.

Explain how the pop operation affects the minimum element tracking.

What is the time complexity of retrieving the minimum element using the proposed method?

How does the implementation of the minimum stack ensure that the minimum is always tracked correctly?