6th December solution - Advent of Code 2020 - swift
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 - 6th December 2020
Find the number of unique characters for each group of characters and sum up the count for all groups.
Find the number of shared characters all members of a group of characters share and sum up the count for all groups.
For a more detailed description of the tasks check this out.
The lines variable is an array of strings containing a set of characters of each member given by Advent of Code, which is individual for each user. Each group of multiple members are seperated by a empty line.
Because these two solutions only differ in one line, I made function solving the puzzels, where I provide a boolean, indicating whether the first or the second task is to solved. Here is the solution: