colleen lewis

Java NM - Example 9: Two variables can reference the same object and both of them can modify it

The Join Block: Programming in Scratch 2.0

Java Objects 1: Calling a constructor

Drawing a Bigger and Bigger Shape Used Iteration: Programming in Scratch 2.0

Binary Search Trees (BSTs) - Find, Insert, and Remove Pseudocode

CS60 - Tail recursive Fibonacci

Java Arrays: 2D int arrays

3D Java examples - Overview (https://tinyurl.com/3DJavaResources)

Recurrence Relationship Unrolling T(1)=1 T(N) = 1 + T(N/2)

Negation in Prolog

CS Awesome: 2.1 Introducing Vocabulary (Class, Object/Instance, Attributes/Instance Variables)

CS Awesome 3.7 - Two Equivalent Strings in Java (they are not ==)

toString method for List/ListNode Java class

Java Arrays 3: int array variable that is not set - it stays null

Java Methods 1: Passing a reference to an array

Java Modulo 1: Modulo calculates the remainder

Part 5: Inheriting a Grandparents Method (Java Inheritance)

Java Booleans 2: And statement (result is false)

Part 3: Syntax to Extend a Class (Java Inheritance)

APCSA - Sorting Algorithm Comparison

CS Awesome: 3.7 - == and .equals with Strings in Java

Back-pocket code: Filter an ArrayList (Java)

Java while loops - Flow chart

Java Arrays 5: Resetting an int array reference

Part 4: Method Execution with Inheritance (Java Inheritance)

Part 6: Polymorphism Introduction (Java Inheritance)

Part 7: Method Calls with Polymorphism (Java Inheritance)

Java NM - Example 5: Two variables can reference the same int array and both of them can modify it

Preview - Unit 1 APCSA - Annotated Anchor Code

Generics in Java

Java Arrays 1: Set the values in an int array

Java Arrays 2: Two ways of creating an int array

Java NM: Example 6: An array passed to a method can be modified within that method

Java NM - Example 10: The variable this is created when we call a method on an object

Exceptions in Java List/List Node class

Java HashSet - How does HashSet use hashCode and equals?

Java NM - Example 4: Null reference

Using IF with Variables: Programming in Scratch 2.0

Java Arrays 4: Modify an int array referenced by two variables

Java Strings: Default values for String variables and String arrays

CS Awesome: Vocabulary (Class, Object/Instance, Attributes/Instance Variables, Behavior/Methods)

CS60 - Running JUnit Tests in Eclipse

Java NM - Example 7: Calling a constructor makes an object

Creating empty Lists using List/ListNode classes

APCSA - Unit 2a - Annotated Anchor Code

Using Java Generics in List/ListNode and writing constructors that call other constructors

Preview - Unit 2b APCSA - Annotated Anchor Code

3D Java - Make a double

Playing Scales With and Without Variables: Programming in Scratch 2.0

Java explanations - Overview (

Unit 2-String Alias: In an assignment statement, we always copy the value in the variable-Java APCSA