Core Data Structures for Coding | Dataford Interview Questions

What data structures should you be ready to use for coding interviews?

For this hands-on exercise, process operations using a stack, queue, set, and key-value map. Return one result for every operation, using null when an operation has no value to return.

The function accepts a list of operation arrays and returns a list of results. Each operation is [structure, action] or [structure, action, value].

Constraints

1 <= operations.length <= 10^4
Each operation has two or three elements
Stack, queue, and set values are integers or strings
Map put operations use a two-element [key, value] pair
A pop, dequeue, or missing map key returns null

Function Signature

def process_operations(operations):

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