Arrays and Lists

What is a data structure?

• A list of variables
• A list of variables and strings
• A facility that holds more than one value

What is an array?

• A list of variables
• A list of strings
• A series of memory locations, each with the same name, that hold related data

Why are arrays used?

• Arrays store multiple data values under one name, reducing the complexity of our program
• Arrays store more data than if we were using variables
• Arrays store more data than if we were using strings

In an array, what is an element?

• The smallest number an array can hold
• The biggest number an array can hold
• An element is one value in an array

How many elements would the array 'student_marks(10)' hold?

• Nine elements
• Ten elements
• Eleven elements

In the array 'numbers(6, 10, 7, 12, 9, 2)', what is the value of element numbers(4)?

• Nine
• Twelve
• Two

In the array 'colours("Purple", "Blue", "Red", "Green", "Yellow")', what is the value of the element colours(3)?

• Green
• Red
• Purple

In the array 'names("John", "Ali", "Sarah")', what is the value of element names(2)?

• Ali
• Sarah
• John

What is the difference between an array and a list?

• An array holds numbers, whereas a list holds strings
• An array can only hold data of the same data type, whereas lists can hold values of different data types
• An array holds both numbers and strings, whereas a list only holds numbers

When creating the array 'scores(9)', what does the '9' in brackets represent?

• The number of elements the array can hold
• The largest number of digits an element can hold
• The largest number of characters an element can hold