Year 10 - Computing
2D arrays and lists
Programming: strings and lists
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit introduces pupils to string-handling techniques, they will explore how a string can be iterated over using a loop and sliced to create substrings. Pupils will be introduced to arrays and lists and explore the differences between the two. They will manipulate with a variety of list methods.
Lesson Summary
You will learn to define and use two-dimensional lists.
Key Notes
- A list is used to hold multiple elements under one name.
- A two-dimensional list allows you to hold a list as one element.
- Data in a 2D list can be held in rows and columns.
Vocabulary To Learn
- list: a dynamic data structure that can contain items of different data types
- two-dimensional: describes a list or array that has both columns and rows of values
- array: a static data structure that contains items of the same data type
Common Mistakes To Avoid
- Arrays and lists behave in the same way.
3 Quick Questions (With Answers)
1. Describe the system or process from this lesson in clear steps.
A list is used to hold multiple elements under one name. A two-dimensional list allows you to hold a list as one element.
2. Define this computing term and give one practical example. 'list'
a dynamic data structure that can contain items of different data types. Add one real device or system example to prove understanding.
3. Correct this common computing misconception.
Mistake: Arrays and lists behave in the same way. Correction: An array has a predefined fixed size. A list can vary in size throughout program execution.
More Lessons In This Unit
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