Day 25: Code Chronicle
Megathread guidelines
- Keep top level comments as only solutions, if you want to say something other than a solution put it in a new post. (replies to comments can be whatever)
- You can send code in code blocks by using three backticks, the code, and then three backticks or use something such as https://topaz.github.io/paste/ if you prefer sending it through a URL
FAQ
- What is this?: Here is a post with a large amount of details: https://programming.dev/post/6637268
- Where do I participate?: https://adventofcode.com/
- Is there a leaderboard for the community?: We have a programming.dev leaderboard with the info on how to join in this post: https://programming.dev/post/6631465
Congrats on reaching the finish line!
The bit that caught me out was that the key + lock should equal 5 in reality, instead of being up to 5 in the challenge.
Thanks! I quickly wrote it but didn’t think to count things. I just took the index of where the edge was located at and ran with it.
So I don’t understand what you mean by equal 5. Could you elaborate? Cause I must have read the challenge text differently.
For a real world lock, the key height + pin height must equal the height of the barrel exactly. If it is taller or shorter, the lock will bind and not open.
https://upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Pin_tumbler_no_key.svg/400px-Pin_tumbler_no_key.svg.png
For the challenge, as long as its not overlapping (too tall), its a valid key/lock pair.
Oh! I didn’t think it that way, lol, I was thinking this quickly through. I didn’t think of relating to physical locks because it clearly said it was virtual. But I guess, there could theoretically be a physical tumbler lock with 0-5 spacers, it would just be a tall lock. You know like how some master keys have it so that there are spacers for the master key or the client key to open the lock.