Could you confirm that the submitted classes should be sorted in ascending order by the numerical order of the numerical part of their filenames, rather than in lexicographic order ?

In other words is the correct order for the numbers 1-10 :

1 2 3 4 5 6 7 8 9 10

rather than

1 10 2 3 4 5 6 7 8 9

?

Though the wording of the task description strongly implies numeric order, I wanted to confirm this since there's no other way to verify the order.

Thank you.