Min Stack: O(1) Minimum Retrieval
The Min Stack problem appears deceptively simple: design a stack that supports push, pop, top, and getMin—all in O(1) time. Standard stacks already give us the first three operations in…
The Min Stack problem appears deceptively simple: design a stack that supports push, pop, top, and getMin—all in O(1) time. Standard stacks already give us the first three operations in…