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 - 17th December 2020

Game of Life simulation with follwing rules:

• Active cell remains acitve if exactly 2 or 3 neighbors are active
• Inactive cell becomes acitve if exactly 3 neighbors are active

1. Number of active cells after 6 cycles in 3 dimensions

2. Number of active cells after 6 cycles in 4 dimensions

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

The lines variable is an array of lines in the txt files given to each member by Advent of Code, which is individual for each user.

The solutions are only differ in the type of Coordinate. Here is the solution:

Overview of all solutions of 2020:

Advent of Code 2020 Solutions Overview