Examples of design patterns

Consists of four homeworks, made for Design Patterns subject. Every homework shoud have class diagram with explanation of which design pattern has been used, how and where.

Design patterns:

Homework 1 Composite Factory

Homework 2 Memento State Observer

Homework 3 Observer Memento Model - View - Controller Chain of Responsibility

Homework 4 Cache Observer Memento Model - View - Controller Chain of Responsibility Singleton