7.4 Arrays

Question 1

Array (strict data structure)

Answer 1

A data structure that allows you to hold many items of data which is referenced by one identifier

Question 2

Array rules (strict data structure)

Answer 2

• All items of must be of the same datatype

- An array’s size is declared during initialisation

Question 3

Python Array

Answer 3

• There is no such “array” but list (for the rest of the cards pArray)
• A list can store any data type without the size being defined during initialisation

Question 4

Function to get length of pArray

Answer 4

len(name_of_array)

Question 5

Function to add items in an pArray

Answer 5

name_of_array.append(name_of_item)

Question 6

Function to get the value held at that position in a pArray

Answer 6

name_of_array[index]

Question 7

How to delete a value at a pArray with the index

Answer 7

del pArray[index]

Question 8

Linear search procedure for a pArray

Answer 8

for i in pArray:
if item == i:
(do whatever)

Question 9

Advantages of arrays

Answer 9

Easier to utilise and sort out data

Question 10

Dimensional arrays

Answer 10

Arrays can have different dimensions, so there can be 2D and 3D arrays (arrays inside of arrays)