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 interview prep, company training, university coursework, practice problems, a speed contest, or to challenge each other.
An Advent calendar, from the German word Adventskalender, is used to count the days of Advent in anticipation of Christmas. Since the date of the First Sunday of Advent varies, falling between November 27 and December 3 inclusive, many reusable Advent calendars made of paper or wood begin on December 1. Others start from the First Sunday of Advent.
Advent of code is an advent calendar of small programming puzzles for a variety of skill sets created by Eric Wastl
Advent of Code 2015: Solutions
Advent of Code 2016: Solutions
Advent of Code 2017: Solutions
Advent of Code 2018: Solutions
Advent of Code 2019: Solutions
Advent of Code 2020: Solutions
Advent of Code 2021: Solutions