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Solution Review: Min Stack

Explore how to create a Min Stack class in Go by managing two stacks for efficient push, pop, and retrieving minimum operations. Understand the logic that maintains the current minimum value at the top of a secondary stack, enabling constant time access.

Solution: A two-stack class

We’ll make a new class consisting of two stacks: mainStack and minimumStack. The class will have the following functions:

  • Push()
  • Pop()
  • Min()

Let’s see what each function will do:

  • Push: Push an element to the top of mainStack. It compares the new value with the value at the top of minimumStack. If the new value ...