How can you generate a matrix filled with ones using an array of counts?

edit

You can generate a matrix filled with ones using an array of counts by the following method:

1. Create an array of counts with the desired number of rows and columns. For example, if you want a 3x4 matrix, create an array with [3, 4] dimensions.

2. Use the numpy.ones() function to create a matrix filled with ones of the same dimensions as the array of counts.

3. Use the numpy.repeat() function to repeat the rows and columns of the matrix according to the counts in the array.

Here's an example code snippet that generates a 3x4 matrix filled with ones using an array of counts:

import numpy as np

counts = np.array([3, 4])   # array of counts with dimensions [3, 4]
ones_matrix = np.ones(counts)   # create a matrix filled with ones
result = np.repeat(ones_matrix, counts[0], axis=0)   # repeat the rows
result = np.repeat(result, counts[1], axis=1)   # repeat the columns

The result matrix should be:

array([[1., 1., 1., 1.],
       [1., 1., 1., 1.],
       [1., 1., 1., 1.]])