Advent of Code 2020

Solutions for the 2020 Advent of Code

Building

This project makes use of Go 1.15.

go mod download
go test ./...

Running the Solutions

To run a solution, use the problem name followed by the path to an input file.

For example, to run problem 2a:

$ go run ./main.go 2 a -i ./challenge/day2/input.txt
Answer: 9633
Took 999.4µs

Adding New Solutions

A generator program is included in gen/problem.go that makes templates for each day. For example, go run gen/problem.go 9 a will generate the following files:

• challenge/cmd/importDay9.go: A "glue" file combining commands for both of the day's problems to simplify wiring up subcommands
• challenge/day9/a.go: The main problem implementation, containing a cobra command a and the implementation func A(*challenge.Input) int
• challenge/day9/a_test.go: A basic test template
• challenge/day9/b.go: The main problem implementation, containing a cobra command b and the implementation func B(*challenge.Input) int
• challenge/day9/b_test.go: A basic test template
• challenge/day9/input.txt: The challenge input

License

These solutions are licensed under the MIT License.

See LICENSE for details.