GCSE Computer Science: Programming (Data Structures)

Data structure

Variable

Program

Function

List

Dictionary

String

Array

Tuple

scores = [15, 29, 4, 50]

scores = {15, 29, 4, 50}

Int[] scores = {15, 29, 4, 50};

scores = (15, 29, 4, 50)

Arrays have fixed length: Lists have dynamic length

Arrays only contain one data type; Lists can contain many data types

Arrays are indexed from 1; Lists are indexed from 0

Arrays can not be empty; Lists can be empty

mango

pear

kiwi

['apple','banana','pear']

list.append(x)

list.count(x)

list.sort()

list.format()

list.isNumeric()

colours[2] = 'pink'

colours.append('pink')

colours.insert(2, 'pink')

colours.remove('pink')

scores = [[80,59,34,89], [31,11,47,64], [29,56,13,91]]

scores = ((80,59,34,89), (31,11,47,64), (29,56,13,91))

Int[] scores = scores = {80,59,34,89}, {31,11,47,64}, {29,56,13,91}};

scores = {1: [80,59,34,89], 2: [31,11,47,64], 3: [29,56,13,91]}

scores[1]

scores[1][2]

scores[2][3]

scores[47]

Index out of range

29

34

89