[Sublist] Fix existing approaches & add new ones

[Yrahcaz7]

Fixes formatting and content of Sublist approaches as outlined here. (Will add at least one additional approach.)

Looking closer at the argument in this PR, I have have to say that I don't fully agree with either side. (Look at the changes in using-strings/content.md for further detail.)

[Yrahcaz7]

@BethanyG, if I use a slightly modified version of your Sublist solution for a sort-lists approach, should I add you in the contributors array for that approach? I'm still not sure how all this authors and contributors array stuff works.

[BethanyG]

@BethanyG, if I use a slightly modified version of your Sublist solution for a sort-lists approach, should I add you in the contributors array for that approach? I'm still not sure how all this authors and contributors array stuff works.

If that modification has lead to a whole new approach, I'd just put yourself as the author. I am happy being left off. My name is next to so much stuff, no need to invent more. 😄

[Yrahcaz7]

It's pretty much the same approach, the modifications are more minor. Here's the code:

SUBLIST = 1
SUPERLIST = 2
EQUAL = 3
UNEQUAL = 4

def sublist(list_one, list_two):
    if list_one == list_two:
        return EQUAL
    if not (list_one and list_two):
        return SUPERLIST if list_one else SUBLIST

    shorter, longer = sorted((list_one, list_two), key=len)

    for index in range(len(longer)):
        if longer[index : index + len(shorter)] == shorter:
            return SUPERLIST if longer is list_one else SUBLIST

    return UNEQUAL

[BethanyG]

still happy being left off. 😄 It's all yours!

Edited to add: Needed a bit of a break, so have been doing some knitting. So I might be a tad slower to answer for a bit. Will get back to things in a bit. 😄

[Yrahcaz7]

@BethanyG I ended up modifying it a bit more (mostly because I noticed it could be a bit more optimal when the arguments are UNEQUAL). The PR should ready for review now.

Edit: Whoops, there was a copy-paste error I missed. Should be ready for real now.