Welcome to 9618 Computer Science!

AS and A Levels resources:

• Learner Guide 9618

• Syllabus 2024-2025

• 9618 Computer Science book 

• Past papers 9618 - exams from JUN 2021

• Past papers 9608 - exams till NOV 2021

• Pseudocode reference 2025

• Pseudocode reference 2026

• Sorting algorithms:

  • Bubble sort: python, pseudocode

  • Insertion sort: python, pseudocode

• Searching algorithms:

  • Binary search: python, pseudocode

  • Linear search: python, pseudocode

• Implementations of various ADT(Abstract data types) according to 9618 A Level Computer Science (Python):

  • Stack ADT: 

    • https://www.youtube.com/watch?v=lwTT4yT8EAk

    • Stack ADT python code

    • Stack ADT in pseudocode

  • Queue ADT: 

    • https://www.youtube.com/watch?v=Ko36hT7MKhs

    • Queue ADT python code

    • Queue ADT in pseudocode

    • Queue ADT in python code implemented using Linked List of Nodes in python

  • Linked List ADT:

    • https://www.youtube.com/watch?v=tLHdz4VTmAs

    • Implementation with Nodes(class) in python

    • Implementation with two 1D arrays in python

    • Implementation with two 1D arrays in python(static linked list)

  • Binary Tree:

    • https://www.youtube.com/watch?v=NtqCPtdTbdc

    • Binary Tree code with Nodes in python

    • Binary Tree code with three 1D arrays

    • Binary Tree in pseudocode