GlossariesIGCSE GlossariesIGCSE Computer Science Glossary2-Dimensional Array

2-Dimensional Array - IGCSE Computer Science Definition

Reviewed by: James Woodhouse

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What is a 2-dimensional array?

In IGCSE Computer Science, a 2-dimensional (2D) array extends the concept of a 1D array by adding another dimension. It is structured like a table with rows and columns, allowing data to be stored in a grid format.

How are 2D arrays useful?

2D arrays are used in applications such as spreadsheets, image processing, and game boards where data is organised in rows and columns.

Example in Python:

matrix = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

print(matrix[1][2]) # Output: 6

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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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