NumPy: Create random set of rows from 2D array

NumPy: Array Object Exercise-114 with Solution

Write a NumPy program to create a random set of rows from a 2D array.

Sample Solution:

Python Code:

# Importing the NumPy library and aliasing it as 'np'
import numpy as np

# Creating a new 2D NumPy array 'new_array' with random integers between 0 and 4 inclusive
new_array = np.random.randint(5, size=(5, 3))

# Printing a message indicating a random set of rows from the 2D array will be displayed
print("Random set of rows from 2D array array:")

# Printing the generated 2D NumPy array 'new_array'
print(new_array) 

Sample Output:

Random set of rows from 2D array array:
[[4 0 2]
 [4 2 4]
 [1 0 4]
 [4 4 3]
 [3 4 3]]

Explanation:

In the above code –

np.random.randint(5, size=(5, 3)): Generate an array of random integers between 0 (inclusive) and 5 (exclusive). The size parameter is set to (5, 3), which specifies the shape of the resulting array, i.e., 5 rows and 3 columns. Store the generated array to the variable 'new_array'.

print(new_array): Print the resulting 'new_array'.

Pictorial Presentation:

Python-Numpy Code Editor:

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