Advent of Code 2020

Solutions for the puzzles of Advent of Code 2020, written in Java.

The general utilities and algorithms used in the solutions are also available in a separate repository: https://github.com/p-kovacs/java-puzzle-utils

How to use

Execute ./gradlew run -Pday=<number> to run the solution for the given day. For example, ./gradlew run -Pday=3.

Java 11 (or newer) is required to be specified in JAVA_HOME.

Input files

For each day, the corresponding input files in src/main/resources contain my personal input data. You can replace them with your own ones.

Notes on the puzzles

• More challenging ones: Day 7, Day 13, Day 19, Day 23
• Challenging and cumbersome: Day 20