Rotating a 4x4 array 90 degrees Counterclockwise using NumPy

NumPy: Advanced Exercise-30 with Solution

Write a NumPy program to create a 4x4 array with random values and rotate the array 90 degrees counterclockwise.

Sample Solution:

Python Code:

import numpy as np

# Create a 4x4 array with random values
array = np.random.random((4, 4))

# Print the original array
print("Original Array:\n", array)

# Rotate the array 90 degrees counterclockwise
rotated_array = np.rot90(array)

# Print the rotated array
print("Array after 90 degrees counterclockwise rotation:\n", rotated_array)

Output:

Original Array:
 [[0.16774949 0.30263452 0.75987069 0.368299  ]
 [0.39865392 0.4344374  0.29780849 0.07469577]
 [0.94042863 0.37602418 0.36429796 0.76098639]
 [0.43534721 0.52836575 0.65394788 0.47563204]]
Array after 90 degrees counterclockwise rotation:
 [[0.368299   0.07469577 0.76098639 0.47563204]
 [0.75987069 0.29780849 0.36429796 0.65394788]
 [0.30263452 0.4344374  0.37602418 0.52836575]
 [0.16774949 0.39865392 0.94042863 0.43534721]]

Explanation:

• Import NumPy: Import the NumPy library to work with arrays.
• Create a Random 4x4 Array: Generate a 4x4 array filled with random values using np.random.random.
• Print the Original Array: Print the original 4x4 array for reference.
• Rotate the Array: Use np.rot90 to rotate the array 90 degrees counterclockwise.
• Print the Rotated Array: Print the array after rotating it 90 degrees counterclockwise.

Python-Numpy Code Editor:

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