Question

On python :

• d. Create a null vector of size 10 but the fifth value which is 1. - 5 Point
• e. How to sum a small array faster than np.sum?- 5 Point

Answer 1

The python solutions are provided below:

d.

Solution:

The statements to create a null vector of size 10 with the fifth element as 1 is as follows:

v = np.zeros(10)

v[4] = 1

Explanation:

• The v represents the vector with 10 null elements.
• The statement v[4] = 1 represents that the fifth index value of vector is set to 1.

The complete code for testing the statements are provided below:

Screenshot of the code:

Sample Output:

Code To Copy:

#Import the packages.

import numpy as np

#Define the vector of 10.

v = np.zeros(10)

#Display the vector.

print(v)

#Display the fifth value.

print("Update fifth value to 1")

#Update the fifth value of vector as 1.

v[4] = 1

#Display the updated vector v.

print(v)

e.

Solution:

• The difference between the sum and the np.sum is that the np.sum are more useful and faster to use in the case of arrays.
• While Python sum() is useful for lists.
• So, it depends upon the defined case, if there is arrays then it is better to use the np.sum.
• But if it is a list, then it is better to use the sum().