Understanding - Advanced, exercise 39

Text

The variable my_mat_string contains the string of 10 digits defining a matriculation number (e.g. "0000123456"), and the variable my_given_name contains the string of a given name in lowercase. What is the value returned by calling the function t as shown as follows: t(my_given_name, my_mat_string).

def t(given_name, mat_string):
    res = 0

    mat_len = len(mat_string)
    for i in range(mat_len):
        sx = int(mat_string[i])
        dx = int(mat_string[mat_len - i - 1])

        if sx < dx:
            n = dx - sx
        else:
            n = sx - dx

        res = res + n
    
    res_s = given_name[res % len(given_name)]
    res_b = res_s in "aeiou"

    return res_s, res_b

Hints

The function t is an iterative function returning a tuple of two elements, i.e. a string and a boolean.

Additional material

The runnable Python file is available online. You can run it executing the command python exercise_39.py in a shell, and then following the instructions on screen to specify the intended input.