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Data Structures for Coding Interviews in Go

Solution: Min Stack

Explore the design of a stack that supports retrieving the minimum value in constant time using two stacks. Understand how to implement push, pop, and min methods efficiently, analyze time and space complexity, and apply this approach to coding interview problems.

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Statement

Design a stack data structure to retrieve the minimum value in O(1)O(1) time. The following functions must be implemented:

  • min(): Returns the minimum value in the stack in constant time.
  • push(int value): Pushes a value onto the stack.
  • pop(): Removes and returns a value from the top of the stack.

All functions should be implemented with a time complexity of O(1)O(1).

Constraints:

  • −105≤-10^5 \leq
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