RAII and Virtual Destructors | Dataford Interview Questions

They asked why we use virtual destructors, what is RAII etc.

Implement a simulator that returns destruction and resource-release events for polymorphic objects. Destruction must follow reverse construction order, derived-to-base destructor order, and RAII cleanup order. When the base destructor is non-virtual, only the static type's destructor chain executes.

Function: simulate_destruction(classes, objects, virtual_destructor). classes maps each class name to {base, resources}, objects is construction-order data containing id, dynamic_type, and static_type, and the output is a list of event strings.

Constraints

1 <= len(objects) <= 10^4
1 <= len(classes) <= 10^3
Every referenced class exists in classes
Each class has at most one direct base
Class inheritance contains no cycles
Resource names are unique within each class

Function Signature

def simulate_destruction(classes, objects, virtual_destructor):

Your question is RAII and Virtual Destructors. 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.

Problem

They asked why we use virtual destructors, what is RAII etc.

Constraints

1 <= len(objects) <= 10^4
1 <= len(classes) <= 10^3
Every referenced class exists in classes
Each class has at most one direct base
Class inheritance contains no cycles
Resource names are unique within each class

Function Signature

def simulate_destruction(classes, objects, virtual_destructor):

Your question is RAII and Virtual Destructors. 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.