Python Examples

Arrays

# This program demonstrates array processing, including:
# display, total, max, min, parallel arrays, sort,
# fixed arrays, dynamic arrays, and multidimensional arrays.

import random

def display_array(array):
    for index in range(len(array)):
        print('array[' + str(index) + '] = ' + 
            str(array[index]))


def calculate_sum(array):
    total = 0
    for index in range(len(array)):
        total += array[index]
    return total


def calculate_maximum(array):
    maximum = array[0]
    for index in range(1, len(array)):
        if maximum < array[index]:
            maximum = array[index]
    return maximum


def calculate_minimum(array):
    minimum = array[0]
    for index in range(1, len(array)):
        if minimum > array[index]:
            minimum = array[index]
    return minimum


def demonstrate_parallel_arrays(names, ages):
    for index in range(len(names)):
        print(names[index] + ' is ' + 
            str(ages[index]) + ' years old')
    

def demonstrate_fixed_array():
    array = [None] * 5
    for index in range(len(array)):
        array[index] = random.randint(0, 100)
    display_array(array)


def demonstrate_dynamic_array():
    array = []
    for index in range(5):
        array.append(random.randint(0, 100))
    display_array(array)


def demonstrate_multidimensional_array():
    game = [
        ['X', 'O', 'X'], 
        ['O', 'O', 'O'], 
        ['X', 'O', 'X'] ]

    for row in range (0, 3):
        for column in range(0, 3):
            print(game[row][column], end='')
            if column < 2:
                print(' | ', end='')
        print()


def main():
    names = ['Lisa', 'Michael', 'Ashley', 'Jacob', 'Emily']
    ages = [49, 48, 26, 19, 16]

    display_array(names)
    display_array(ages)

    total = calculate_sum(ages)
    maximum = calculate_maximum(ages)
    minimum = calculate_minimum(ages)

    print('total: ' + str(total))
    print('maximum: ' + str(maximum))
    print('minimum: ' + str(minimum))

    demonstrate_parallel_arrays(names, ages)
    
    ages.sort()
    display_array(ages)

    demonstrate_fixed_array()
    demonstrate_dynamic_array()
    demonstrate_multidimensional_array()


main()

Output

array[0] = Lisa
array[1] = Michael
array[2] = Ashley
array[3] = Jacob
array[4] = Emily
array[0] = 49
array[0] = Lisa
array[1] = Michael
array[2] = Ashley
array[3] = Jacob
array[4] = Emily
array[0] = 49
array[1] = 48
array[2] = 26
array[3] = 19
array[4] = 16
total: 158
maximum: 49
minimum: 16
Lisa is 49 years old
Michael is 48 years old
Ashley is 26 years old
Jacob is 19 years old
Emily is 16 years old
array[0] = 16
array[1] = 19
array[2] = 26
array[3] = 48
array[4] = 49
array[0] = 18
array[1] = 14
array[2] = 59
array[3] = 99
array[4] = 61
array[0] = 85
array[1] = 4
array[2] = 35
array[3] = 45
array[4] = 93
X | O | X
O | O | O
X | O | X

References

• archive.org: Programming Fundamentals – A Modular Structured Approach using C++