Would love to see the addition of recursion in solutions to Q2

[Lord-of-Bugs]

I solved Q2 more concisely and structurally elegant using recursion.

[darkprinx]

Thanks for putting this together! Looking at the diff, it goes further than the title suggests — it touches all 8 notebooks (Day_01–Day_08), and in several spots it replaces/removes existing solutions rather than adding alongside them (e.g. the deposit/withdraw logic in Day_05 Q17, the generator/list-comprehension alternatives in Day_01) instead of just adding the new recursive Q2 solution. Could you rescope this down to the intended addition(s), or split it into separate PRs per day/question? Happy to merge once it's additions-only — don't want to lose other contributors' solutions in the process.

[darkprinx]

Followed up on this since it's been a couple hours without a response — went through the full diff hunk by hunk against all 8 notebooks. Every hunk either deletes/replaces an existing contributor's solution (e.g. it removes the "Using For Loop"/"Using While Loop" alternatives for Q2, and removes leonedott's and another contributor's Q17 solutions entirely, replacing them with your own versions) or is an empty trailing cell — there's no hunk in the whole diff that's a pure addition.

On top of that, both things this PR sets out to add have since landed independently through smaller, non-destructive PRs: a "Using recursion" solution for Q2 (via #141) and a dictionary-based solution for Q17 (via #80, the etanios solution using a transactions dict) are both already on master.

Since there's nothing left to add that isn't already there, and merging as-is would drop other contributors' solutions across 8 days, I'm closing this rather than merging. Really appreciate you taking the time to put this together — if you'd like to contribute a specific addition instead (one method, one question, one file), very happy to take a fresh PR for that. Thanks!