151. OCR A Level (H046-H446) SLR25 – 2.3 Implement bubble sort

About this video

OCR Specification Reference
AS Level 2.3.1c
A Level 2.3.1f

The bubble sort is one of two sorting algorithms students need to know for AS exams. This video explains the bubble sort technique.

Key questions:

- Can you successfully implement a bubble sort using a high-level programming language of your choice?
- Do you understand how a bubble sort works, and can you trace its code to explain how it works?

00:00 Implement a bubble sort
00:06 Intro
00:11 Checklist
00:34 What is a bubble sort algorithm?
00:55 What are the applications of a bubble sort?
01:13 Visualising a bubble sort
01:26 Bubble sort pseudocode
04:46 Bubble sort coded in Python
15:09 Final thoughts
16:31 Key questions
16:46 Essential algorithms for A Level Computer Science text book
17:50 Outro

Last updated: 27.07.26

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