Sum of all elements in 1D and 2D array in Python

        This program adds the elements from beginning to end. It can be done by built-in functions or using loop.

Let us discuss many methods as follows…

1D array elements:

The methods are

• ·       Using built-in method sum ()
• ·       Using loops
• ·       Using numpy

Using built-in method sum ():

#create an array of elements

n_array = [100, 200, 300, 400, 500]

#find the total from the sum()

a_total = sum(n_array)

#print the sum

print("Sum of the elements in the array:", a_total)

Output:

Sum of the elements in the array: 1500

Using loops:

#Array creation

n_array = [11, 22, 33, 44, 55]

a_total = 0

#using a for loop to find the sum

for no in n_array:

    a_total += no

#Print the sum

print("Sum of the elements are:", a_total)

Output:

Sum of the elements are: 165

Using Numpy:

              This uses Numpy built-in method.

#create object for numpy

import numpy as np1

#Create an array ,find the total and print the sum

n_array = np1.array([11, 22, 30, 44, 56])

a_total = np1.sum(n_array)

print("Sum of elements:", a_total)

Output:

Sum of elements: 163

Next, 2D arrays.

2D array elements:

              2D array has set of rows and columns. Here, we use nested loops and numpy to find the sum of the elements.

Using nested loops:

#create a 2D array

s_matrix = [

    [11, 2, 31],

    [40, 15, 16],

    [71, 80, 9]

]

#using nested for loop to find the sum

m_total = 0

for m_row in s_matrix:

    for m_element in m_row:

        m_total += m_element

#Print the output.

print("Sum of all the elements are:", m_total)

Output:

Sum of all the elements are: 275

Using numpy:

#create an object for numpy

import numpy as np1

#2D matrix creation

s_matrix = np1.array([

    [10, 20, 30],

    [40, 50, 60],

    [70, 80, 90]

])

#find the sum of all elements

s_total = np1.sum(s_matrix)

#final display

print("Sum of all the elements are:", s_total)

Output:

Sum of all the elements are: 450

That’s all. The sum of all the elements in 1D and 2D array was done successfully in different methods. Keep coding!!!