As part of Advent of Code (adventofcode.com) each day there are two programming tasks to be solved. All solutions are listed here.

I am writing the solutions in Swift with the Playground environment in xCode.

Tasks - 25th December 2020

1. Unlock made up encryption.

For a more detailed description of the tasks check this out.

The cardsPublicKey and doorsPublicKey variables the values given to each member by Advent of Code, which is individual for each user.

Here is the solution:

Overview of all solutions of 2020:

Advent of Code 2020 Solutions Overview