# Arrays and algorithms notes

> CAPS-aligned study notes for Arrays and algorithms in Grade 11 Information Technology. Browse the sections below for explanations, worked examples and exam preparation.

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## Sections in Arrays and algorithms

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- [One-dimensional arrays and nested loops](https://www.hlayiso.com/grade-11/information-technology/notes/arrays-and-algorithms/one-dimensional-arrays-and-nested-loops) — One-Dimensional Arrays and Nested Loops When programs need to store and process large amounts of data, using separate variables for each item becomes impractical. An array solves this problem by…
- [Searching algorithms (linear and binary search)](https://www.hlayiso.com/grade-11/information-technology/notes/arrays-and-algorithms/searching-algorithms-linear-and-binary-search) — Searching Algorithms: Linear and Binary Search When working with arrays containing large amounts of data, you need efficient ways to find specific values. This section covers two searching…
- [Sorting algorithms (bubble and selection sort)](https://www.hlayiso.com/grade-11/information-technology/notes/arrays-and-algorithms/sorting-algorithms-bubble-and-selection-sort) — Sorting Algorithms: Bubble Sort and Selection Sort Sorting arranges array elements in a specific order — ascending (smallest to largest) or descending (largest to smallest). This section covers two…
- [Parallel arrays](https://www.hlayiso.com/grade-11/information-technology/notes/arrays-and-algorithms/parallel-arrays) — Parallel Arrays Arrays can only store elements of the same data type. But what if you need to store related information of different data types — for example, learner names (strings) and their marks…

## Other Information Technology topics

- [Systems technologies](https://www.hlayiso.com/grade-11/information-technology/notes/systems-technologies)
- [Operating systems and processing](https://www.hlayiso.com/grade-11/information-technology/notes/operating-systems-and-processing)
- [Networks and communication](https://www.hlayiso.com/grade-11/information-technology/notes/networks-and-communication)
- [String manipulation and date/time](https://www.hlayiso.com/grade-11/information-technology/notes/string-manipulation-and-datetime)
- [Electronic communication](https://www.hlayiso.com/grade-11/information-technology/notes/electronic-communication)
- [Text files](https://www.hlayiso.com/grade-11/information-technology/notes/text-files)
- [Software engineering principles](https://www.hlayiso.com/grade-11/information-technology/notes/software-engineering-principles)
- [Data and information management](https://www.hlayiso.com/grade-11/information-technology/notes/data-and-information-management)
- [User-defined methods](https://www.hlayiso.com/grade-11/information-technology/notes/user-defined-methods)
- [Database programming](https://www.hlayiso.com/grade-11/information-technology/notes/database-programming)
- [Internet and WWW](https://www.hlayiso.com/grade-11/information-technology/notes/internet-and-www)
- [Social implications](https://www.hlayiso.com/grade-11/information-technology/notes/social-implications)

## Frequently asked questions

### What is covered in Arrays and algorithms for Grade 11 Information Technology?

The Arrays and algorithms section covers all key concepts from the Grade 11 Information Technology CAPS curriculum, including detailed explanations, worked examples, and exam preparation tips.

### Are the Arrays and algorithms notes free?

Yes. Each section has a free preview, and a free Hlayiso account lets you read the full notes.

### How do these notes help with exam preparation?

Our Arrays and algorithms notes are CAPS-aligned and include worked examples, common mistakes to avoid, and exam tips — everything you need to prepare for your Grade 11 Information Technology exams.

### Are there quizzes for Arrays and algorithms?

Yes. Hlayiso has quizzes for Arrays and algorithms in Grade 11 Information Technology. Test your understanding after reading the notes.

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