How to reshape a 1D array into 2D and print Strides using NumPy?

NumPy: Memory Layout Exercise-2 with Solution

Write a NumPy program that reshapes a 1D array of 12 elements into a 2D array of shape (3, 4) and print its strides.

Sample Solution:

Python Code:

import numpy as np

# Create a 1D array of 12 elements
a = np.arange(12)

# Reshape the array into a 2D array of shape (3, 4)
reshaped_a = a.reshape((3, 4))

# Print the strides of the reshaped array
print("Strides of the reshaped array:", reshaped_a.strides)

Output:

Strides of the reshaped array: (16, 4)

Explanation:

• Import NumPy: Import the NumPy library to handle array operations.
• Create 1D array a: Define a 1D array a with 12 elements using np.arange(12).
• Reshape the array: Use the reshape() method to convert the 1D array into a 2D array of shape (3, 4).
• Print Strides: Print the strides of the reshaped array using the strides attribute.

Python-Numpy Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: How to create a 3D array and print its strides using NumPy?
Next: How to create and flatten a 2D NumPy array using ravel()?