Low Level Design & OOP
Design and Implement a Doubly Linked List
Asked by:Anduril
object_modelinginterfacesstate_managementtesting
Problem Overview & Object Oriented Requirements
Design a small object-oriented doubly linked list whose insertion, removal, search, and traversal contracts remain correct at every boundary.
Design Principles: Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, Dependency Inversion (SOLID).
Topics & Patterns: object_modeling, interfaces, state_management, testing.
Class Design Breakdown
1. Identify Core Entities
List primary objects, state enums, value objects, and domain controllers.
2. Class Relationships
Define inheritance, composition, aggregation, and interface abstractions.
3. Apply Design Patterns
Incorporate Strategy, Factory, Observer, State, or Decorator design patterns.
4. Concurrency & Extensibility
Handle thread locks, synchronization, and future extensions cleanly.