Random matrix in python

Question

Create a 3x4 matrix with random numbers with the help of Nampi library, then put the negative numbers inside this matrix into a one-dimensional array.

Answer 1

import numpy as np

# Create a 3x4 matrix with random numbers
matrix = np.random.randn(3, 4)

print("Original Matrix:")
print(matrix)

# Extract negative numbers into a one-dimensional array
negative_numbers = matrix[matrix < 0]

print("\nNegative Numbers Array:")
print(negative_numbers)

In this code, the np.random.randn(3, 4) function generates a 3x4 matrix with random numbers drawn from a standard normal distribution. The condition matrix < 0 creates a boolean mask indicating which elements of the matrix are negative, and then indexing the matrix with this condition extracts the negative numbers.