Can I contribute a possible solution to Exercise 10.2?

Hi Alex
Welcome to the forum!
Of course you can contribute.
You can contribute a solution even if we do already have one.
Our policy is to ask you to publish a link to your solution, so that other users of the forum can choose whether they want to read your solution or not.
I look forward to reading your solution.
I do have a solution to this exercise. I just didn't get round to publishing a link to it.
Thank you.
Vasco