-❄️- 2023 Day 9 Solutions -❄️-

• AoC

  87 18 8.3 Python

  my personal repo for the advent of code yearly challenge (by Fadi88)

• aoc2023

  12 1 8.6 Pyret

  Advent of code 2023 solutions (by tobega)

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• Advent-of-Code

  3 0 8.6 JavaScript

https://github.com/mark-boots/Advent-of-Code/blob/main/2023/day9/index.js

• aoc2023

  9 13 9.4 Python

  Advent of Code 2023 (Mojo)

• adventofcode

  8 0 7.1 C#

• advent-of-code-2023

  5 0 8.1 Rust

  Advent of Code 2023 (Rust) (by bozdoz)

I’m same background learning rust this year! Check out mine: https://github.com/bozdoz/advent-of-code-2023/blob/master/day-09/src/main.rs

• AdventOfCode2023Julia

  2 0 8.5 Julia

  Advent of Code 2023 challenges done in Julia

[LANGUAGE: Julia] 521/293 Code

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

• Advent-Calendar-Python

  2 1 8.6 Python

  This repository contains all my answers to all the Advent Calendar

Solution Uploaded here: https://github.com/fschatbot/Advent-Calendar-Python/blob/master/2023/9.py

• advent-of-code

  13 1 7.4 Ruby

  All my advent of code projects (by snowe2010)

• advent-of-code

  1 0 8.3 Go

  Advent of Code solutions (by pimvanhespen)

solution here

• AdventOfCode2023

  3 0 8.2 JetBrains MPS

  Advent of Code 2023 solutions (by johnpmay)

Oh man, it's Friday night, I was ready for something epic. Oh well, yay recursion. No github link, this is all of it. Still waiting to break the top 1000 on part 2 this year, but I got close this time.

• advent-of-code-2023

  5 1 9.1 Scala

• advent-of-code-2023

  3 2 7.8 Python

  My codes for advent of code 2023, predominantly in python. (by sayan01)

• advent-of-code

  1 1 6.9 C#

Solution

• adventofcode2023

  4 0 6.2 Java

• AoC-2023

  1 0 8.5 TypeScript

  Solutions for Advent of Code 2023, aiming to work in C and JS/TS this year! (by EvilKanoa)

Code for both parts here: https://github.com/EvilKanoa/AoC-2023/commit/834635b81c62515ce3194df233d0c51eefa768ef

• AOC2023

  6 1 8.7 F#

  Advent of Code 2023 (by mbottini)

GG EZ

• AdventOfCode2023

  5 0 8.7 Python

Solution

• Jsaoc

  1 0 5.5 Shell

  Templating system and personal solutions in javascript for Advent of Code 2023

Part 1 & 2

• advent-of-code

  25 2 8.5 Clojure

  My Advent of Code answers (by tcsullivan)

• Advent-of-Code

  42 9 8.6 Python

  Advent of Code (by michaeljgallagher)

:D

• AdventOfCodeCSharp

  30 7 8.0 C#

  My AoC Solutions

• advent-of-code-2023

  3 3 9.4 Rust

  aoc2023 with #![no_std] (by dhconnelly)

• AdventOfCode2023

  1 0 8.0 C#

Github

• advent_of_code

  8 1 9.3 C++

  C++23 solutions to advent of code puzzles -- various years complete. (by jwezorek)

• advent-of-code-gs

  2 4 9.0

  Google Sheets one formula solutions to Advent of Code (No GAS)

Github repo

• aoc2023

  5 0 10.0 Rust

• AdventOfCode2023

  1 1 9.1 Kotlin

Solution

• advent-of-code

  8 2 7.5 Go

• AdventOfCode2023

  1 0 7.4 Java

Solution

• advent-of-code-2023

  2 0 7.3 Rust

  My atempt at learning Rust (by vesk4000)

LANGUAGE: Rust

• aoc

  7 59 7.6 Go

• AdventOfCode2023

  4 0 7.2 Kotlin

• AoC

  28 15 7.5 Assembly

  Advents of Code in NASM x86_64 assembly (by JustinHuPrime)

Part 1 involved a direct solution - for each line, I read it into a dynamically allocated array, then allocated a new array and calculated the differences between the previous array's elements, and so on until I got an array that's all zeroes. I then proceeded to extrapolate - I found the end of the list, and added the end of the previous list to this list to get the new element to add to the end of the list - I actually didn't need to save this value in new space, I could have just overwritten the old end of the list.

• advent_of_code

  1 0 6.5 Rust

[Rust] https://github.com/Kromzem/advent_of_code/blob/main/src/day_nine.rs

• aoc

  24 380 8.9 Python

  🎄 My solutions and walkthroughs for Advent of Code and more related stuff.

Solution

• playground

  6 3 6.9 Kotlin

• AdventOfCodeRust

  2 0 8.3 Rust

  Rust solutions to AdventOfCode (by amSiddiqui)

• advent_of_code

  2 0 8.7 TypeScript

  Advent of Code solutions -- see: https://adventofcode.com/ (by solarshado)

github

• AOC2023

  3 1 8.8 Java

  Advent of code 2023 (by SPixs)

Day 9

• advent_of_code

  8 0 8.4 Python

  My Advent of Code solutions in Python 3 (by thomasjevskij)

I resisted the urge to do this in some clever numpy way. But this really felt like a problem meant for vectorized diff functions. Or for some neat recursive solution. I just went for something pretty straightforward and part 2 was not so nasty today :)

• aoc2023

  6 3 9.1 Rust

  Advent of Code 2023 in Rust (by szeweq)

• advent-of-code

  2 4 8.4 Go

  Implemented in Go, TypeScript & Dart (by ayoubzulfiqar)

Go

• swift-aoc-2023

  1 0 7.6 Swift

Code

• advent-of-code

  6 6 8.6 JavaScript

  Advent of Code 2023 workspace (by ccozad)

• aoc-2023

  6 1 8.9 Haskell

  AoC 2023 in Haskell (by alexjercan)

• arturo-aoc-2023

  7 5 8.4

  AOC 2023 in Arturo

• AdventOfCode_Main

  3 0 9.1 F#

Nice an easy one to start the weekend happy...but I think we'll be crying tomorrow as visit the island... Link Github 2023 Day 09

• AoC2023

  4 0 8.1 Python

  Python code for Advent of Code 2023 (by p3rki3)

• adventofcode

  44 310 9.5 C#

  :christmas_tree: Advent of Code (2015-2023) in C# (by encse)

https://github.com/encse/adventofcode/blob/master/2023/Day09/Solution.cs

• aoc2023-benchmarks

  1 0 7.4 Rust

  My solutions to this year's Advent of Code

[LANGUAGE: Rust] Does this make me a (one-)line-cook?!

• aoc23

  7 1 7.6 TypeScript

  Advent of Code 2023 solutions written in Deno (by dmatis2)

• AoC2023

  1 1 6.9 Java

The solution is here: Solution

• advent-of-code-rust

  2 77 9.5 Rust

  Complete 2023 to 2019 and 2016 to 2015 entries for the annual Advent of Code challenge, written in performant Rust. (by maneatingape)

Reworked my solution to use this approach.

• AoC

  1 0 7.0 Python

[LANGUAGE: Python] Used pairwise from itertools to get the pairs of values. https://github.com/vigge93/AoC/blob/master/2023/day9.py

• aoc2023

  5 6 8.7 Python

• aoc23

  5 2 6.8 C++

Both parts ~800 μs each excluding parsing. https://github.com/gitpushjoe/aoc23/blob/main/day9/solution.cpp

• aoc

  7 0 7.8 Go

• advent-of-code

  4 1 8.4 Clojure

• advent_of_code

  7 0 8.8 Rust

  Advent of Code solutions in Rust (by cainkellye)

• advent-of-code-2023

  1 0 7.9 TypeScript

• adventOfCode

  6 0 9.6 Haskell

  adventOfCode (by GuillaumedeVolpiano)

• Advent-of-code-2023

  1 0 7.8 Kotlin

• my_advent_of_code

  1 0 8.1 TypeScript

Complete solutions : https://github.com/DarioTheLuca/my_advent_of_code/blob/master/aoc2023/src/day09/index.ts

• aoc

  5 - -

Defaulted to vectorized bruteforce with numpy, fully expecting to have to refactor for GPU. Did not expect it to work so easily.

• advent-of-code-2023

  3 0 8.2 TypeScript

• aoc_2023

  4 - -

• Advent-Of-Code-2023

  1 0 8.4 Python

A recursive solution with essentially 4 lines of code for the logic.

• advent-of-code

  1 1 7.7 Rust

• AdventOfCode

  6 1 8.7 JavaScript

• Advent_of_Code_2023

  2 1 9.2 Julia

  Advent of Code programming solutions, 2023 (by wherrera10)

No need for an option to reverse when there's `pushfirst!()` to [do it all in one pass].

• AoC2023

  4 0 8.2 F#

  Advent of Code for 2023 in F# (by kimvais)

and yeah, GG EZ indeed

• adventofcode

  5 2 8.3 Python

  My solutions to Advent of Code. (by WinslowJosiah)

• advent-of-code-2023

  4 0 7.6 Python

  My solutions to Advent of Code 2023 (by ThomasBollmeier)

Straightforward solution: https://github.com/ThomasBollmeier/advent-of-code-2023/blob/main/09/main.py

• advent-of-code

  44 23 8.7 C++

Click here for a solution which will predict the humidity and other values, in all directions you can think of! You'll be able to use the water from the oasis, and predict when exactly it'll be salty enough for your taste!

• Advent-of-Code

  1 2 9.0 Rust

  My Code for solving Advent of Code (https://adventofcode.com/) (by Skgland)

Github Link

• aoc_rust_2023

  7 0 8.0 Rust

  Advent of Code 2023 solutions in Rust.

• AdventOfCode2023

  7 1 8.9 Jupyter Notebook

  AdventOfCode2023 (by marcodelmastro)

• advent_of_code_2023

  5 1 9.1 Rust

  Advent of Code 2023 in Rust (by daic0r)

• advent_of_code_2023

  6 0 8.2 Rust

  Solutions for Advent of Code 2023 (by ropewalker)

• AdventOfCode

  5 0 6.6 C++

• aoc2023-janet

  1 0 6.0 Janet

  Advent of Code 2023 in Janet

GitHub Repository

• aoc23

  2 2 7.0

  Advent of Code 2023 in Scale

Day 9 Part 1 & 2

• AOC

  3 0 8.0 C

[Code]

• advent-of-code-2023

  5 0 9.0 Rust

• aoc

  22 1 9.0 Raku

  Advent of Code - mscha's Perl 6 solutions (by mscha)

Full code at GitHub.

• AdventOfCode

  9 0 8.1 Rust

  My solutions to Adventofcode (by sergiosgc)

Code

• AoC23

  1 0 4.5 C#

• advent-of-code-2023

  3 0 7.2 Python

• aoc2023

  1 0 6.8 Rust

  Advent of Code 2023 (by pwislowski)

github

• aoc2021

  11 2 8.0 Java

  Advent of Code 2021 - 2023 (by dirk527)

• adventofcode

  1 1 6.9 C#

GitHub

• aoc

  2 0 7.8 Python

  All Advent's of Code solutions and its solver for everyone (by crixodia)

It's all about high order arithmetic progression. Almost instant output. Solution Here. Just one formula. Thanks Newton 🫡

• advent-of-code

  8 4 8.8 C++

  Advent of Code Programming Puzzles (by foolnotion)

• advent-of-code-2023-golang

  6 0 6.7 Go

• advent-of-code-2023

  6 3 7.6 Go

  Solution in Go (Golang) for Advent of Code 2023 (by silverark)

• AOC2023

  2 0 7.0 JavaScript

• Advent-of-Code-2023

  5 0 8.7 Python

  For the sixth time trying to see if I remember something (by Leftfish)

Anyway, after noticing that the sequences in the input are not arithmetic, I decided not to look for any fancy solutions. I initially went for lists and solved both parts instantly, but then I decided to do it more properly, so hello, deques.

• advent-of-code-2023

  6 5 7.2 C

• Aoc2023

  8 0 7.8 Rust

There's no backward in going forward, as my grandfather used to say. Except for my answer to part 2 of this puzzle, which is taking backwards and flipping it around.

• Advent_of_Code_2023

  2 0 7.4 C++

  My advent of code solutions for 2023 in mostly python and c++ but maybe other languages if I want to :^) (by lmitlaender)

Day 9 2023 - Part 1 and 2 - Github

• puzzles

  6 0 8.6 C++

  collection of solutions for various programming puzzles (by jcmoyer)

• Advent_of_Code

  2 0 7.9 Python

• aoc2023

  4 0 8.8 C#

  Avent of code 2023 (by ryanheath)

• AdventOfCode

  7 1 9.2 C#

• adventofcode2023

  7 0 8.3 Rust

This is straightforward. Now I can eat my breakfast.

• AoC_23

  3 0 8.4 Python

  Had to create a new one ...

No imports, nothing complicated, somehow it worked... 🥹

• solutions

  4 1 8.2 JavaScript

  🧠 Solutions of different problems in different languages (by win0err)

• aoc-2023

  6 0 8.7 Nim

  Advent Of Code 2023 - in nim (by runekaagaard)

• Advent-Of-Code

  2 0 6.7 Nim

  Discontinued My participations in the Advent of Code challenge (by saulvaldelvira)

• advent

  4 1 8.6 Haskell

• advent-of-code

  3 1 3.3 Lua

  Advent of Code Solutions 🎄 (by samyuh)

• advent-of-code-2023

  1 0 10.0 Rust

  Discontinued Advent of Code 2023 in Rust, 2 stars for days from 1 to 18. (by phantie)

GitHub

• advent_of_code

  6 0 6.8 Ruby

  my solutions to advent of code (by comforttiger)

• advent-of-code-2023

  5 3 8.4 Python

  Advent of Code 2023 (by juanplopes)

• AoC2023

  1 0 5.7 Racket

https://github.com/thrilway/AoC2023/blob/3a8ae0097f1fbb23691f9c2859c6f0eb85a8e94b/09/day09.rkt

• aoc2023

  1 0 8.7 Python

  Advent of Code 2023 (by tommyip)

Uiua playground Github

• AdventOfCode-2023-Assembly

  2 5 8.4 Assembly

  Advent of Code 2023 solutions in RISC-V assembly.

• adventofcode

  3 0 7.4 Go

  Solutions to AoC puzzles (by alkurbatov)

• aoc-cl

  3 0 7.9 Common Lisp

  Advent of Code with Common Lisp (by hulufei)

• Advent-of-Code

  8 4 8.3 TypeScript

• aoc

  4 19 7.9 Scheme

  advent of code (by jitwit)

• advent

  1 1 7.0 Go

  My solutions for the Advent of Code http://adventofcode.com/ (by willmadison)

• advent-of-code-2023

  1 0 8.2 Go

  Solutions to 2023's daily challenges (by mleone10)

Link

• aoc

  1 1 7.1 Go

  advent of code (by cdillond)

• AdventOfCode2023

  1 1 8.4 F#

Part1: https://github.com/SimonNyvall/AdventOfCode2023/blob/main/day9.fs

• advent-of-code

  19 19 9.2 Go

• adventofcode

  86 16 7.3 TypeScript

  Solutions for problems from AdventOfCode.com (by bhosale-ajay)

• advent_of_code_2023

  2 3 6.9 V

  Advent of Code 2023 done in V (by xXMacMillanXx)

Github day 09

• AdventOfCode

  3 2 7.4 Apex

  Repository to store the solutions for AdventOfCodes. 2021 in Apex, 2022 a mix, 2023 in JS, challenge accepted! (by foxysolutions)

Github. Always a big love for recursion and appreciating when it's rewarded by 2nd puzzle :P

• AdventOfCode2023

  1 0 6.9 Rust

Solution

• aoc-2023

  1 3 7.5 TypeScript

  Solving 2023 AoC challenges in Node.js & Typescript.

Solution

• aoc

  4 0 8.2 C#

  Advent of code (by SaahilClaypool)

github

• AdventOfCode

  1 0 6.0 PowerShell

https://github.com/fasteasyfree/AdventOfCode/blob/main/2023/9-1.ps1

• AdventOfCode

  1 0 7.9 Rust

  Advent of Code 2021 (by Jacke-debug)

• AoC2023

  4 1 5.1 JavaScript

  Advent of Code Challenges 2023 (by les-friesen)

• advent-of-code-2023

  1 0 7.5 Scala

github

• aoc2023

  4 0 8.0 Rust

• aoc_2023

  5 0 8.7 Rust

• advent-of-code-one-liners

  7 110 7.7 Python

  🐍📅 One-line Python solutions for Advent of Code 2022 and 2023.

Today beats yesterday as my fastest solve! Fairly short too, so I'll include my one-line solutions in-line. q[9] contains the input. Here is my updated visual of the Basilisk, which combines all my one-line solutions into a single, disgusting line of code!

• advent-of-code

  3 0 7.0 Java

  Advent of Code (by MarginallyClever)

  

[Language: Java] https://github.com/MarginallyClever/advent-of-code/blob/main/src/main/java/com/marginallyclever/adventofcode/y2023/Day9.java

• AdventOfCode

  1 0 5.6 JavaScript

Day 9

• aoc2023

  5 1 8.0 Go

  My solutions for Advent of Code 2023 (by Queueue0)

• AoC

  5 0 8.3 Python

  Advent of Code in Python (by Josef-Hlink)

• goaoc2023

  2 0 6.4 Go

solution with some simple recursion

• aoc2023

  2 0 7.2 Tcl

  Advent of Code 2023 (by mek)

• advent-of-code

  1 1 0.0 JavaScript

  Advert of Code solutions (by ungrim97)

Day 9.js

• aoc-2023

  3 0 8.7 Python

  Code for Advent of Code 2023 (by akleemans)

Github Link

• adventofcode-kotlin

  1 0 9.0 Kotlin

  My Advent of Code solutions coded in the Kotlin language (by palinkiewicz)

GitHub link

• adventofcode

  8 0 7.5 D

  Doing advent of code problems in D. (by schveiguy)

• advent

  1 0 6.8 Python

  Attempts at solving the annual Advent of Code, the daily christmas themed coding challenges. (by Kingzel)

Part 1: 9A

• adventofcode

  8 0 6.9 Fortran

  Advent of Code solutions. (by ejrsilver)

• aoc-go

  1 0 7.6 Go

[LANGUAGE: Go] Github

• advent-of-code

  8 0 8.0 Rust

• AoC_2023_go

  2 0 8.3 Go

Classic iterative approach

• Advent_Of_Code

  14 0 8.1 Python

  My solution for the Advent of Code challenges in various languages. (by Dullstar)

• advent_of_code

  19 5 8.0 Dart

  Solutions to programming puzzles on Advent of Code (by Praful)

Here's the relevant extract from my (recursive) solution. Full code on GitHub.

• AOC2023

  7 0 8.4 F#

  My code for y2023 AdventOfCode (by vorber)

• AdventOfCode2023

  2 0 8.0 Java

Here is the solution, quite easy : https://github.com/SimonGirardSfeir/AdventOfCode2023/tree/main/src/main/java/org/girardsimon/day09

• advent-of-code

  4 2 7.9 Scala

  Advent of code (by rlemaitre-ledger)

[Part 1 and 2](https://github.com/rlemaitre-ledger/advent-of-code/blob/main/src/main/scala/adventofcode/aoc2023/day09/Day09.scala)

• AOC2023

  8 0 8.2 Perl

  Advent of Code 2023 (by wlmb)

• David-s-Advent-Of-Code-2023

  1 0 4.4 Python

  Repo to store code for my Advent of Code 2023 run.

https://github.com/dave-cao/David-s-Advent-Of-Code-2023/tree/main/day_9

• AdventOfKode2023

  6 1 8.0 Kotlin

• aoc

  6 1 8.8 Jupyter Notebook

  Advent of Code (by wleftwich)

• advent_of_code_2023

  7 2 8.7 C++

  repo for advent of code 2023, xmas themed coding challenge

• adeventofcode2023

  1 0 6.3 Rust

[LANGUAGE: Rust] Simple iterative solution: GitHub link

• adventofcode23

  4 0 6.9 Python

  advent of code solutions, 2023 (by katstasaph)

• adventofcode

  4 0 7.7 Rust

• aoc_2023

  1 0 7.0 Rust

• advent-of-code

  1 0 8.3 Go

  My Advent of Code solutions in Golang (by jerodev)

Part 1 & 2 Github link

• advent-of-code-2023

  1 0 7.6 Java

Github

• AdventOfCode2023

  2 0 7.4 C#

Github Link

• adventofcode

  5 9 0.0 Python

  Solution implementations to https://adventofcode.com puzzles (by codertee)

Used itemgetter to make solution generic for both parts: github

• advent-of-code

  1 0 8.2 JavaScript

  My Advent of Code Solutions (by nicklpeterson)

I did the brute force algorithm first and was kind of bummed it worked. Went back for the Lagrange Solution. Interestingly it gets very very close, but I still need to do Math.round to get the correct output. https://github.com/nicklpeterson/advent-of-code/blob/main/2023/9.js

• AoC-2023

  3 1 7.7 Go

  Advent of Code 2023. Learning Go with bad code (by mdd36)

• adventOfCode2023

  3 0 8.1 JavaScript

  my solutions to the 2023 advent of code in js (by HelplessSoldier)

[Language: JavaScript] github 8ms.

• aoc-2023

  2 0 7.7 JavaScript

  Advent of Code 2023 (by kendlbat)

• advent_of_code

  5 3 6.4 Python

  My solutions to the Advent of Code event (by Robin270)

Anyway my solution available on my GitHub

• AdventOfCode2023-PHP

  2 1 8.2 PHP

  My solutions for Advent of Code 2023, in PHP

• advent-of-code-2023

  2 0 7.3 Swift

Solution Day 9 here: GitHub

• advent-of-code-2023

  8 7 9.9 Haskell

  Haskell (and Swift) solutions to Advent of Code 2023

Behind the scenes it is also diffing the output of the solutions against the expected outputs, and it's all a single self-contained (albeit spaghetti) Makefile. Bon appétit!

• advent-of-code

  1 0 5.8 Rust

Golang Solution

• aoc

  1 0 7.5 Perl

[LANGUAGE: Raku]: https://github.com/mcmillhj/aoc/blob/main/2023/09/mirage-maintenance.raku

• advent-of-code-2023

  1 0 6.3 Rust

I’m somewhat new to rust as well but here’s my attempt: https://github.com/devashishp/advent-of-code-2023/blob/main/day9/src/main.rs

• advent-of-code

  8 4 5.7 JavaScript

  My solutions to the Advent of Code puzzles (by hiimjustin000)

• advent-of-code

  16 0 7.2 PHP

Part 1: Loop creating an array of differences to add to the main array, until you reach 0,0,0. Take the last number from each and add to get the next in the sequence.

• aoc-2023

  1 0 7.6 JavaScript

  Solutions of the 2023 Advent of Code challenges (by krenedits)

Solution using Lagrange interpolation

• AoC23

  1 1 7.6 TypeScript

  Advent of Code 2023 (by ransoing)

https://github.com/ransoing/AoC23/blob/main/src/day9/solution.ts

• aoc

  3 0 9.2 Fortran

  My Advent of Code 2023 Solutions (by AJMansfield)

• Advent-Of-Code-2023

  5 0 8.6 Haskell

  AoC 2023 solutions in Haskell (by daysleeperx)

A bit late to the party, but still enjoyed this one.

• SaaSHub

  www.saashub.com sponsored

  SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

  

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