Advent of code reddit

Something is wrong with global snow production, and you've been selected to take a look. The Elves have even given you a map; on it, advent of code reddit used stars to streamio the top fifty locations that are likely to be having problems.

Advent of Code is an excellent annual collection of programming puzzles. It's quickly become my favorite part of the holiday season as a celebration of programming: carefully crafted puzzles, amazing solutions spanning astonishing technical stacks, beautiful visualizations — with a sense of humor and joy around it all. The reason I recommend AoC strongly is because it's simply so much fun : there's a surreal and light-hearted Santa-themed story wound around each year's story, an amazing — and inspiring — community on Reddit ; and the puzzles are generally aimed towards teaching something new. I'd strongly recommend it even if you don't generally enjoy programming competitions like Code Jam or Hacker Cup. Very briefly: a new puzzle unlocks every night at midnight, Eastern time from 1st to 25th December. Each puzzle has 2 parts, with the 2nd part generally being a more complex variation on the theme. Inputs vary and can be large; occasionally involve ASCII art or other sentences that need to be parsed.

Advent of code reddit

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Awesome Advent of Code : a massive collection of tools, templates and solutions. There are so many new tricks and techniques you might come across during the competition that it's hard to remember them all, let alone apply them when you next see a similar problem.

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You may have recently heard some talk about Advent of Code - every developer's favourite advent calendar. In this article, I'm going to try and explain why everyone can get something out of it. Advent of Code is a website that sets daily challenges for each day of advent. The context for each challenge tells part of a story that spans the full 25 days. Each day, you are presented with two problems that are designed to be challenging whilst remaining accessible to those without much programming experience. Solving a problem rewards a gold star - to complete the challenge, you need to collect all 50 of them. Whilst this sounds simple, the challenges vary in difficulty with an upwards trend as the event progresses. You can use any language! You can even solve them with an esolang if you want a challenge!

Advent of code reddit

You feel the ground rumble again as the distress signal leads you to a large network of subterranean tunnels. You don't have time to search them all, but you don't need to: your pack contains a set of deployable sensors that you imagine were originally built to locate lost Elves. The sensors aren't very powerful, but that's okay; your handheld device indicates that you're close enough to the source of the distress signal to use them. You pull the emergency sensor system out of your pack, hit the big button on top, and the sensors zoom off down the tunnels. Once a sensor finds a spot it thinks will give it a good reading, it attaches itself to a hard surface and begins monitoring for the nearest signal source beacon. Sensors and beacons always exist at integer coordinates. Each sensor knows its own position and can determine the position of a beacon precisely ; however, sensors can only lock on to the one beacon closest to the sensor as measured by the Manhattan distance. There is never a tie where two beacons are the same distance to a sensor. It doesn't take long for the sensors to report back their positions and closest beacons your puzzle input.

Catch crossword clue

My personal laptop is a Macbook Air running Arch Linux, so it's not particularly powerful: running OBS to record my screen at a readable resolution started causing my keystrokes to lag. Partial screen recordings: Peek Peek was really useful in capturing a rough sea full of sea monsters: I suspect I'll be using it a lot more frequently at and away from work to capture snippets from my screen. There's also a significant amount of effort in making sure we don't DDOS the website. I wrote some code to break the input into tokens manually, and then simply evaluate left to right eagerly for part 1. The format Very briefly: a new puzzle unlocks every night at midnight, Eastern time from 1st to 25th December. Advent of Code Advent of Code is an excellent annual collection of programming puzzles. Writing about them — perhaps as notes in your code repo, tweets, blog posts, perhaps even a Substack if you're with the zeitgeist and an extrovert, or a Zettelkasten if you're an introvert — goes a very long way. Faking pointers using indexes into an array works out surprisingly smoothly in Rust. It's quickly become my favorite part of the holiday season as a celebration of programming: carefully crafted puzzles, amazing solutions spanning astonishing technical stacks, beautiful visualizations — with a sense of humor and joy around it all. Our sponsors help make Advent of Code possible:. What is the sum of all of the calibration values?

The wind has changed direction enough to stop sending lava droplets toward you, so you and the elephants exit the cave.

You've been doing this long enough to know that to restore snow operations, you need to check all fifty stars by December 25th. I'd become fairly arrogant with my abilities writing parsers after writing a few trivial procfile and s expression parsers. Instead of looping from I rolled my own function to get a modular inverse and then successively reduced the equations by combining 2 constraints into 1 repeatedly till I got a single modular congruence, which I solved to get the least positive integer that worked.. Figuring out how this solution worked was fairly gratifying in itself: Calculating the solution for the Chinese remainder theorem by applying the direct construction of the existence proof , and getting the value much more simply. Very briefly: a new puzzle unlocks every night at midnight, Eastern time from 1st to 25th December. For the first couple of weeks I was basically trying to write Python in Rust: not really relying on the typing system, keeping all the "business" logic in my head and simply manipulating plain data structures. The unfiltered version of this section is a Twitter thread on my account where I'd annoy my followers and record my victories and failures along the way. I wrote some code to break the input into tokens manually, and then simply evaluate left to right eagerly for part 1. Wielding iterators with more skill It's been extraordinarily tempting to convert all my for loops to iterators and code-golf my solutions away to nothingness; but if I'm perfectly honest abusing iterators often makes the code more unreadable and harder to work with. My personal laptop is a Macbook Air running Arch Linux, so it's not particularly powerful: running OBS to record my screen at a readable resolution started causing my keystrokes to lag. Advice for participants This is as much for me in as for anyone who's somewhat unfamiliar with it; there are a couple of things I would recommend to have the most fun with the contest:. Axel Lind 's rust solutions: I found these really useful to be able to see significantly more idiomatic Rust than what I'd been writing. Given that I've also spent a significant amount of time thinking through the problem first I can also appreciate their solutions that much better. I somewhat annoyingly for any followers tweeted my way through , and regret not keeping a better record for earlier years.