Navigate
JavaScript Tutorial for Beginners
The Ultimate CSS Tutorial for Beginners
Data Structure Tutorial for Beginners
ReactJS Tutorial for Beginners
Java Tutorial for Beginners
Node.js Tutorial for Beginners
SQL Tutorial for Beginners
Arrays in Data Structures
Content
- Arrays in Data Structures
- What is an Array?
- How Arrays Work
- Example
- Basic Operations
- Updated on 10/09/2024
- 450 Views
What is an Array?
An array is a collection of elements identified by index or key. All elements in an array are of the same type, and the size of the array is fixed when it is created.
How Arrays Work
Arrays store data in contiguous memory locations. Each element can be accessed directly using its index. Useful for scenarios where you need fast access to elements by position.
Example
Imagine you have a row of mailboxes, each labeled with a number. You can quickly find and access the mailbox you want by its number.
Basic Operations
Access: Retrieve an element using its index.
Update: Change the value of an element.
Insert: Add an element to the end.
Delete: Remove an element.
Activity
Create an array in a programming language of your choice. Perform operations like accessing, updating, inserting, and deleting elements.
Quiz
1. How do you access an element in an array?
- a) By its index
- b) By its value
- c) By its size
- d) By its type
2. True or False: Arrays can store elements of different data types.
- a) True
- b) False
3. Which method is used to add an element to the end of an array in JavaScript?
- a) add()
- b) insert()
- c) push()
- d) append()
4. How do you remove an element from an array in JavaScript?
- a) delete()
- b) remove()
- c) splice()
- d) cut()
5. True or False: The size of an array can be changed dynamically after its creation.
- a) True
- b) False
Unlock Expert Career Advice For Free
