Advent of Code

Advent of Code is an annual set of Christmas-themed computer programming challenges that follow an Advent calendar.[1][2] It has been running since 2015.[3]

Advent of Code
Screenshot of the 2020 event page
StatusActive
BeginsDecember 1
EndsDecember 25
FrequencyAnnually
InauguratedDecember 1, 2015 (2015-12-01)
FounderEric Wastl
Most recentDecember 2021 (2021-12)
Websiteadventofcode.com

The programming puzzles cover a variety of skill sets and skill levels and can be solved using any programming language. Participants also compete based on speed on both global and private leaderboards.[1]

History

Advent of Code was launched on December 1, 2015. By midnight EST (UTC−05:00), 81 people had signed up for the event, going slightly over Eric Wastl's planned 70-participant capacity. Within 12 hours, about 4,000 people had joined, nearly causing a system crash. After 48 hours, there were about 15,000 people, and by the end of the 2015 event, the total had risen to 52,000.[4]

In 2020, perhaps due to the COVID-19 pandemic, the event saw a 50% growth in traffic, with over 180,000 participants worldwide.[4]

Puzzle design

Each year, 25 puzzles are created and tested in advance by Eric Wastl, the founder of Advent of Code. They are released on a daily schedule from December 1 to December 25 at midnight EST.[1]

Puzzles consist of two parts that must be solved in order,[5][6] with the second part not revealed to the user until the first part is solved correctly.[7] Participants earn one golden star for each part they finish, giving a possible total of two stars per day and fifty stars per year.[7]

Each puzzle contains a fictional backstory that is the same for all participants, but each person receives a different piece of input data and should generate a different correct result.[7]

There is no time limit to complete the puzzles, and puzzles from past years' events remain available to solve.

References

  1. Wastl, Eric (2021). "About". Advent of Code. Retrieved May 11, 2021.
  2. Joyce, Kara E. (November 11, 2020). "Brain teasers and other fun tips for learning Python". SearchBusinessAnalytics. TechTarget. Archived from the original on November 12, 2020. Retrieved May 12, 2021.
  3. Speed, Richard (December 1, 2021). "On the first day of Christmas, my true love gave to me... a coding puzzle and it's a doozy". The Register. Archived from the original on December 1, 2021. Retrieved December 5, 2021.
  4. Roberts, Siobhan (December 17, 2021). "This puzzle challenge brings joy to the world of code". MIT Technology Review. Retrieved February 20, 2022.
  5. Gee, Sue (December 6, 2020). "Advent Of Code For Programmers". I Programmer. Archived from the original on December 6, 2020. Retrieved May 12, 2021.
  6. Fisher, Kenneth (December 3, 2020). "SQL Homework – December 2020 – Participate in the Advent of Code. from Blog Posts – SQLServerCentral". Packt Hub. Archived from the original on January 26, 2021. Retrieved May 12, 2021.
  7. Hjelle, Geir Arne (December 1, 2021). "Advent of Code: Solving Your Puzzles With Python". Real Python. Retrieved February 20, 2022.
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