Type your comment> @ShingoTamai said:
The first approach that came to my mind was also the right one.
But I banged my head on the wall for a couple of hours because I was lazily using Windows.
It is important to have both upper case and lower case subdirectories present in the filesystem to be able to come up with the solution.
When I have opened the zip file under Windows, I was seeing something like the following.
E.g.:
U:
9
20
28When I decompressed the zip under Linux, things looked different.
E.g.:
u:
20
28U:
9As you can see, the files are organised in a different way. I hope this helps.
I did the same thing…USE LINUX TO DO THIS CHALLENGE! Super easy if you do.