The sample function would choose a random element, or the random n elements, from the array. If the array is empty, the first form returns nil, and the second form returns an empty array.

Using NumPy for array and matrix math in Python Many mathematical operations, especially in machine learning or data science, involve working with matrixes, or lists of numbers.

Given a non-negative number represented as an array of digits, add 1 to the number ( increment the number represented by the digits ). The digits are stored such that the most significant digit is at ...