Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like. People use them as a speed contest, interview prep, company training, university coursework, practice problems, or to challenge each other.
*You don't need a computer science background to participate - just a little programming knowledge and some problem solving skills will get you pretty far. Nor do you need a fancy computer; every problem has a solution that completes in at most 15 seconds on ten-year-old hardware.
*If you'd like to support Advent of Code, you can do so indirectly by helping to Share it with others, or directly via PayPal or Coinbase.
Advent of Code is a registered trademark in the United States.
General Tips
*If you get stuck, try your solution against the examples given in the puzzle; you should get the same answers. If not, re-read the description. Did you misunderstand something? Is your program doing something you don't expect? After the examples work, if your answer still isn't correct, build some test cases for which you can verify the answer by hand and see if those work with your program. Make sure you have the entire puzzle input. If you're still stuck, maybe ask a friend for help, or come back to the puzzle later. You can also ask for hints in the subreddit.
Frequently Asked Questions
*Why was this puzzle so easy / hard? The difficulty and subject matter varies throughout each event. Very generally, the puzzles get more difficult over time, but your specific skillset will make each puzzle significantly easier or harder for you than someone else. Making puzzles is tricky.
*Why do the puzzles unlock at midnight EST/UTC-5? Because that's when I can consistently be available to make sure everything is working. I also have a family, a day job, and even need sleep occasionally. If you can't participate at midnight, that's not a problem; many people use private leaderboards to compete with people in their area.
This repository contains CODE for PUZZLES posted in ADVENT OF CODE 2019
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