Done. Everything should be snake_case now. Inserted your snippet into the test cases, and looks like the current solutions weren't invalidated. Ty.

I reviewed Basic Nico, and it looks different to me. The encryption method isn't the same as columnar transposition, as it sorts by rows first instead of columns to create the cipher. It also does not omit whitespace from the cipher, and it will pad whitespace mid-cipher. But they are similar in method.

This one is trying to focus more on the collision aspect of the keys rather than just generating the ciphertext. If you have any suggestions on changes, please let me know.

Wasn't familiar with this. It should be good now.

This has been reworked quite a bit from the original. The description now clarifies how messages, ciphers, and keys are given a bit more as well.

De Nico asks you to get the ciphertext given the message and key, this one gives you a message, cipher, and a list of keys, and you return all of the keys that cause a cipher collision essentially.

Only took me 3 years to get back around to updating this. If you have a chance to look at it again, I'd appreciate it. <3

It is very similar. I'll make some changes. Thank you.