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hpr_transcripts/hpr3744.txt

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+Episode: 3744
+Title: HPR3744: Advent of code Day 1 - 4
+Source: https://hub.hackerpublicradio.org/ccdn.php?filename=/eps/hpr3744/hpr3744.mp3
+Transcribed: 2025-10-25 04:51:55
+
+---
+
+This is Hacker Public Radio Episode 3,744 for Thursday the 8th of December 2022.
+Today's show is entitled, Advent of Code Day 1-4.
+It is hosted by Daniel Person and is about 5 minutes long.
+It carries a clean flag.
+The summary is, talking about my experience of advent of code so far.
+Hello Hacker, today I'm going to talk about Advent of Code and to make a short story
+much longer, I would actually say that I wanted to do this in January this year because
+last year I did all the advent of code puzzles and were able to actually solve all of them,
+which I was really proud of, so my thought was that I should actually do that and talk
+about all of them and do a bunch of episodes, but then January came, a lot of sickness and
+a lot of the personal issues, so I couldn't really handle actually recording anything.
+And now a year has gone and I've started with Advent of Code again and as we should
+do one episode a year, if I don't do an episode soon, then Ken would be really angry.
+Now I'm just kidding, or do I?
+Well, I'm going to talk about this year's Advent of Code and we have done four days
+so far and day one was really simple.
+It was calculating the number of calories that each elf were carrying, so they have separated
+the calorie listings by an empty line and then you had to count them together and figure
+out who had the most calories and then you had to find top three and add those together.
+So a pretty simple thing, but if you're doing it in a totally new language, that could
+be a great challenge to start with.
+Day two was a huge rock paper scissors challenge, also not that hard and I were really focused
+on actually setting all into different variables and describing everything.
+So I have variables for rock paper and scissors, for a loss, a draw and a win and I'm trying
+to keep everything as readable as possible.
+And the first thing was just to see how many, how much of score, the score would be if
+we just follow a specific schedule and then we had another competition where we actually
+were trying to figure out what we should do in order to win, draw or lose on each of
+these different things.
+So it's an interesting challenge, not super hard.
+Then day three is actually hardest so far.
+It were a bunch of lines with text and you just had a bunch of characters and you had
+to figure out if you split the line in two, you have to figure out what is the unique
+things on each line or which things are repeating on both sides of the line if you split them
+in two.
+And then you had to figure out in the second part what things are actually there in all
+three or three lines and I saw that in a totally new way for me, I actually were able
+to solve it by having lists of numbers and then those lists I put into a set.
+So the set of numbers I got all the unique numbers of the alphabet.
+So all the characters had a specific number in the alphabet and I put them into a set.
+So I had only unique ones and then there is a function called retain all that's pretty
+much does an intersection between two sets.
+So I could do that on all three lines, do the intersection of them and actually go get
+what things were the things contained in all of the lines.
+So that was a new thing for me and I actually learned something in day three so I was really
+pleased with that one and last but not least day four we had a bunch of ranges.
+So this where the elves could clean the camp and they had different sections or areas
+that they wanted to clean and we needed to figure out which areas or numbers of areas
+that actually were overlapping each other and first a puzzle was finding all the ones
+of our totally overlapping so one else would do everything that the other elves should do
+and then the second part we needed to figure out which overlap at all.
+So not as I thought first that day we should find those that didn't overlap at all.
+So what I implemented was things that had no overlap and then I just subtracted that
+with all of them and I got all the ones that overlap in any way.
+So these are the first four days I really enjoy Advent of Code so far as I do every year
+and I create small recordings on YouTube so you can go there and see those if you want.
+I will keep put some links in the talking points for this episode and I hope that you found
+this interesting and I hope that you are also doing Advent of Code and if so,
+record an episode and talk about your experience with Advent of Code.
+If you have never done Advent of Code before and you have any coding experience or for that
+matter no coding experience, pick it up, take any of these first puzzles and take a programming
+language and read up on it. You could solve the first four if you have no knowledge,
+if you just put some time into it and to all of you to the next time use open source software.
+You have been listening to Hacker Public Radio at HackerPublicRadio.org.
+Today's show was contributed by a HBR listener like yourself.
+If you ever thought of recording a podcast and click on our contribute link to find out how easy
+it really is. Posting for HBR has been kindly provided by an onsthost.com, the internet archive
+and rsync.net. On this otherwise stated, today's show is released under Creative Commons
+Attribution 4.0 International License.