Q:

Write a NumPy program to extract all the elements of the first and fourth columns from a given (4x4) array

hamza
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2022-05-18
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Write a NumPy program to extract all the elements of the first and fourth columns from a given (4x4) array.

Python programming,
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hamza
2022-05-18
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import numpy as np
arra_data = np.arange(0,16).reshape((4, 4))
print("Original array:")
print(arra_data)
print("\nExtracted data: All the elements of the first and fourth columns ")
print(arra_data[:, [0,3]])

Sample Output:

Original array:
[[ 0  1  2  3]
 [ 4  5  6  7]
 [ 8  9 10 11]
 [12 13 14 15]]

Extracted data: All the elements of the first and fourth columns 
[[ 0  3]
 [ 4  7]
 [ 8 11]
 [12 15]]

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