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Leetcode 155. Min Stack
Design a stack supporting push, pop, top, and getMin operations all in O(1) time. The core challenge is to maintain and update the current minimum efficiently so getMin returns the smallest element present even after arbitrary pushes and pops.
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Snowflake
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Early September, 2025
Snowflake
Senior
Mid June, 2025
Snowflake
Mid-level
Design a stack that supports push, pop, top, and retrieving the minimum element in constant time. Constraints: All operations will invariably be called on non-empty stacks.
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