The aim of this book is to provide students and teachers of AS & A level Computer Science with a comprehensive guide to the algorithms and data structures students need to understand for examinations.  Each chapter presents:

• a data structure or algorithm, explaining how it works
• real-world applications of the algorithm
• a step-by-step example
• pseudocode
• actual code in Python
• Fully coded solutions to download in Python 3, Visual Basic and C#.
• a description of the space and time complexity.

We have chosen to provide coded solutions in Python 3 because it is the most popular language taught at GCSE, Visual Basic Console (2015 onwards) because it is a language that most closely resembles the pseudocode and coded examples students will need to work with in examinations, and in C# as it is a highly recognised industry standard language.

This book is also available as a printed copy from amazon:

Full coded solutions and additional support material can be found for FREE here: craigndave.org/algorithms

This book is appropriate for all English and Welsh Computer Science specifications.