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Array - IGCSE Computer Science Definition

Reviewed by: James Woodhouse

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What is an array?

In IGCSE Computer Science, an array is a fixed-size data structure that stores multiple values of the same data type in contiguous memory locations. Arrays can be one-dimensional (1D) or multi-dimensional (2D, 3D, etc.).

Why use arrays?

Arrays allow efficient storage and retrieval of data, making them useful for storing lists, tables, and matrices in programming.

Example in Python:

numbers = [10, 20, 30, 40]

print(numbers[1]) # Output: 20

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James Woodhouse

Reviewer: James Woodhouse

Expertise: Computer Science & English Subject Lead

James graduated from the University of Sunderland with a degree in ICT and Computing education. He has over 14 years of experience both teaching and leading in Computer Science, specialising in teaching GCSE and A-level. James has held various leadership roles, including Head of Computer Science and coordinator positions for Key Stage 3 and Key Stage 4. James has a keen interest in networking security and technologies aimed at preventing security breaches.

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