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The aim of this book is to provide students and teachers of GCSE, AS & A level Computer Science a comprehensive guide to the algorithms students need to understand for examinations. Each chapter examines a data structure or algorithm explaining how it works, real-world applications, a step-by-step example, pseudocode, actual code in two languages and 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, and in 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. These coded solutions can be downloaded from craigndave.org/product/algorithms This book is appropriate for all English and Welsh Computer Science specifications, check out our up-to-date mapping document for details. Select the appropriate tile below for additional videos and resources relating to each algorithm.
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Make sure to download our double-sided Big O notation cheat sheet to help you get to grips with algorithm complexity. (Select the image below to download).
