Implement a Stack Using a Queue | Dataford Interview Questions

Implement a stack using a queue.

Use a single queue to process operations represented as lists. push receives a value, while pop, top, and empty produce outputs. Return None for pop or top on an empty stack, and return booleans for empty.

Constraints

0 <= operations.length <= 10^4
Each operation is ["push", value], ["pop"], ["top"], or ["empty"]
Push values are integers
The output contains one result for every pop, top, or empty operation

Function Signature

def implement_stack(operations):

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Problem

Implement a stack using a queue.

Constraints

0 <= operations.length <= 10^4
Each operation is ["push", value], ["pop"], ["top"], or ["empty"]
Push values are integers
The output contains one result for every pop, top, or empty operation

Function Signature

def implement_stack(operations):

Your question is Implement a Stack Using a Queue. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.