Arrays:

Question 1

What is an array?

Answer 1

A data structure for sorting ordered sets of data of the same data type in a single identifier

Question 2

What are some characteristics of an array ?

Answer 2

1. Static data structure
2. Mutable
3. Can only store one data type

Question 3

What does static mean?

Answer 3

It means cannot change size once created

Question 4

What does mutable mean?

Answer 4

It means items can be changed once created

Question 5

What are the types of array?

a)
b)
c)

Answer 5

a) 1 dimensional array (1D array)
b) 2 dimensional array (2D array)
c) 3 dimensional array (3D array)

Question 6

1 dimensional array (1D array)

Answer 6

• A linear array
• An ordered static set of elements

Question 7

2 dimensional array (2D array)

Answer 7

• Can be visualised as a table
• Go down rows and along columns to find position in an array

Question 8

3 dimensional array (3D array)

Answer 8

• Can be visualised as a multi-paged spread sheet or multiple 2D arrays