Solutions to the end-of-chapter problems for "Introduction to Programming In Go" by Caleb Doxsey.
Link to book.
Solutions are stored in a .go file for each chapter: you can either read the code yourself, or you can simply cd to where the file is stored and do:
$ go run <my_file.go>(for the Chapter 12 solutions, replace 'run' with 'test')
and see the answers printed.