Golfcoder FAQ LOGIN
Error

Advent of Code Leaderboard 2023 / Day 9

View puzzle on adventofcode.com

Submit solution



Leaderboard

Name Language Tokens Sum Tokens Part 1 Tokens Part 2 Last change
1 Profile imageSharparam Ruby 120 60 60 12 months ago
2 Profile imageLiquidFun Python 134 64 70 11 months ago
3 FSFabian Schedler Kotlin 158 77 81 12 months ago

Rules

  • You're welcome to participate alone or in a team.
  • You may submit multiple solutions and explore different programming languages.
  • Stick to the standard library of your language, no further dependencies/libraries, except the ones which OneCompiler provides (e.g. NumPy for Python).
  • Ensure your code aligns to the template (Python, Rust, Go, Kotlin, JavaScript, C#, TypeScript, C++, Java, C, Swift, Scala, Ruby, Bash), reading the puzzle input from stdin (terminated with end-of-file), and printing the solution to stdout.
  • Please refrain from making network requests, reading data from files, or storing data in variable/function/class names for reflection.
  • Your code must be able to process all valid Advent of Code inputs. Golfcoder might reevaluate correctness of your solution with different inputs after your submission.

60 tokens in Ruby for part 1 by Sharparam

Download solution

defextrapolate(seq)
seq.all?(0)?0:extrapolate(seq.each_cons(2).map{_2-_1})+seq.last
end

puts$<.readlines(chomp:true).map{extrapolate_1.split.map(&:to_i)}.sum