Are you tackling advanced topics in VB.NET like Object-Oriented Programming (OOP) and hashing algorithms? This post is tailored for IGCSE A-Level Computer Science students in Malaysia who are preparing to ace their exams. We've compiled a comprehensive list of lessons, video tutorials, and exercises that focus on mastering these complex concepts.

Dive into past papers, practical exercises, and detailed explanations to boost your understanding and performance. Whether you're revising for exams or enhancing your coding skills, this post has everything you need to succeed.

List of classes & the asscociated slides & codes  :

1) Class 1 (19 Sept)

     a) Video : Part 1 

     b) Files: G-Drive

     c) Class Code: N/A

     d) Excercises : Pseudo Code

2) Class 2 (22 Sept ):

Class Summary :

• Password Validation Logic

  • Explored methods for checking password criteria (capital letter, lowercase letter, and numbers) using ASCII values.
  • Discussed the benefits of returning integers instead of booleans for smarter coding solutions.
  • Simplified logic using functions for modular design and efficient problem-solving.

• Pseudo-Code Enhancements

  • Converted complex If statements to alternative logic using Case when appropriate.
  • Addressed exam-friendly solutions for pseudo-code questions.

• VB.NET Class Basics

  • Covered the basics of creating classes, constructors, and private attributes.
  • Highlighted the use of properties to simplify Set and Get methods.
  • Clarified the role of ByVal and ByRef in parameter passing.

• OOP Concepts Introduced

  • Touched on advanced concepts like inheritance, polymorphism, and function overloading.
  • Provided a practical example of creating a Car class with attributes and methods.

     a) Video : 

• Part 1 Understanding Password Validation and Classes: VB.NET for Beginners
• Part 2 
• Part 3
• Part 4

     b) Files: G-Drive

     c) Class Code: Main, Employee1_class

     d) Excercises : VB / Pseudo Code

3) Class 3 (26 Sept ):

     a) Video : Part 1, Part 2 

     b) Files: G-Drive

     c) Class Code: Main, Employee1_class

     d) Excercises : VB / Pseudo Code / text File (part Times) 

4) Class 4 (28 Sept ):

     a) Video : Part 1, Part 2,Part 3, Part 4, Part 5 

     b) Files: G-Drive

     c) Class Code: Main, Employee1_class

•      d) Excercises : VB / Pseudo Code 

5) Class 5 (3 Oct ):

  Class Summary :

• Linked Lists Basics:

  • Reviewed linked list structure: start pointer, free list pointer.
  • Discussed adding and deleting elements, including pointer adjustments.
  • Explored ordered linked lists and their implementation.

• Binary Trees:

  • Brief introduction to binary trees and their relationship to linked lists.
  • Overview of traversal techniques and coding considerations.

• Hashing Algorithms:

  • Addressed collision handling techniques:
    • Linear probing.
    • Overflow tables.
    • Linked lists at hash locations.
  • Discussed hashing-based record location in binary files.

• Binary File Operations:

  • Explanation of seek function for record retrieval.
  • Walkthrough of reading and writing binary files using hash-based indexing.

• Pseudo-code and Visual Basic Implementation:

  • Demonstrated pseudo-code structure for linked lists and hashing.
  • Visual Basic coding examples for node initialization, adding, and deleting elements.

• Exam Preparation:

  • Reviewed common exam-style questions:
    • Writing pseudo-code for linked lists and hashing algorithms.
    • Solving recursive and iterative problems.

     a) Video : 

•  Part 1 : Master Linked Lists and Binary Trees: Advanced VB.NET Concepts Explained
•  Part 2

     b) Files: G-Drive

     c) Class Code: Main

     d) Excercises : VB / Pseudo Code 

About Me

Hi, I'm Ahmed, a certified tutor with over 19 years of experience in coding and computer science. I specialize in helping students excel in their IGCSE and A-Level Computer Science exams with personalized tutoring and support. I also offer expert assistance with coding, homework, and assignments across various programming languages, including Python, Java, and VB.NET.
 

If you need help mastering VB.NET or tackling your coding challenges, feel free to reach out to me on WhatsApp: WhatsApp Me for Help.

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