Kairos

This repository is a small library which contains Java based real-world examples of many popular design patterns mentioned in the Gang of Four Book.

☝️ Note that this project is meant to be used for learning and researching purposes only and it is not meant to be used for production.*

Design Patterns

A data pattern is a

Design Patterns by Topic

B - Beginner, A - Advanced

• Creational
  • A Abstract Factory - set/get/update/clear bits, multiplication/division by two, make negative etc.
  • B Builder Pattern
  • B Factory Method - classic and closed-form versions
  • B Singleton (trial division method)
  • B Object Pool - calculate the Greatest Common Divisor (GCD)
  • B Prototype (LCM)
• Structural
  • B Adapter Pattern - product of multiple sets
  • B Bridge Pattern - random permutation of a finite sequence
  • A Composite Pattern - all subsets of a set (bitwise and backtracking solutions)
  • A Decorator Pattern (with and without repetitions)
  • A Facade Pattern (with and without repetitions)
  • A Flyweight Pattern (LCS)
  • A Proxy Pattern
• Behavioral
  • B Chain of Responsibility - number of positions at which the symbols are different
  • A Command Pattern - minimum edit distance between two sequences
  • A Iterator Pattern (KMP Algorithm) - substring search (pattern matching)
  • A Mediator Pattern - substring search (pattern matching)
  • A Observer Pattern - substring search
  • A State Pattern
  • A Strategy Pattern
  • A Template Method
  • A Visitor Pattern