object-oriented design Interview Questions

In this classic object-oriented design problem reported during Zip interviews, you are expected to architect a fully functional automated transaction system. The challenge requires modeling real-world interactions such as accepting various currency denominations, tracking balances, dispensing products, and returning accurate change. It measures your capability to write clean, extensible code adhering to solid design principles while structuring classes effectively. Gain immediate access to the architectural blueprint, design patterns, and complete model implementation with an active subscription.