Understanding - Advanced, exercise 32

Text

The variable my_mat_string contains the string of all the ten numbers of a matriculation number (e.g. "0235145398"), and my_given_name is a string of a given name all in lowercase (e.g. "john"). What is the value returned by calling the function gcs as shown as follows: gcs(my_given_name, my_mat_string).

def gcs(given_name, mat_string):
    res = 0

    mat_len = len(mat_string)
    for i in range(mat_len // 2):
        sx = mat_string[i]
        dx = 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 gcs is an iterative function that looks at the values in the matriculation number (from the most external ones to the internal ones) to compute the tuple representing the final result.

Additional material

The runnable Python file is available online. You can run it executing the command python exercise_32.py in a shell, and then following the instructions on screen to specify the intended input.