Learning Design Patterns, Data Structures, and Algorithms

Credits

• Most examples (code) and text are from the amazing Head First Design Patterns book

Online resources

Adapter Pattern

• Adapter Pattern explained in depth
• Facade Pattern - short and sweet

Decorator Pattern

• Oracle: the decorator pattern in depth
• Helpful Russian doll visual

Observer Pattern

• Making http requests in Angular using observables
• Observer pattern examples in Java

Simple Factory (idiom)

• Simple Factory explained with Java

Factory Method

• Factory Method explained with good visuals

Strategy Pattern

• Good article inspired by Head First Design Patterns

Template Method Pattern

• Template Method explained by SourceMaking
  • mentions that "Factory Method is a specialization of Template Method"
• Blog post: "Patterns I Hate #2: Template Method"

Other

• Examples of patterns in Java
• Great examples of how to use Lombok
• Lombok documentation
• Mutable vs Immutable Objects
• Benefits of Immutable Objects - StackOverflow
• Mutability in Java
• * Mutable and Immutable Objects

Big O Notation Sources

• Big O Notations by Derek Banas
• Good explanation on Quick Sort

Arrays and LinkedList Sources

• Time complexity of contains(Object o) in an ArrayList of Objects
• Definition of an array
• Linked Lists Lecture
• LinkedList Picture

Trees

• Three data structures: queue,stack, and deque
• Difference between BFS and DFS
• StackOverflow Question on BFS and DFS