Search⌘ K
AI Features

Solution: Min Stack

Understand how to implement a Min Stack data structure that supports push, pop, and fetching the minimum element in O(1) time. Explore using two stacks to track main elements and minimum values, ensuring efficient retrieval and seamless stack operations.

Statement

Design a custom stack class, Min Stack, allowing us to push, pop, and retrieve the minimum value in constant time. Implement the following methods for Min Stack:

  • Constructor: This initializes the Min Stack object.

  • Pop(): This removes and returns from the stack the value that was most recently pushed onto it.

  • Push(): This pushes the provided value onto the stack.

  • Min Number(): This returns the minimum value in the stack in O(1)O(1) ...