adventofcode

Solutions to http://adventofcode.com/ in Crystal

The way code is written

Code is written with readability in mind, not maximum efficiency. However, it can be made more efficient, either in terms of memory or running time.

For example, instead of doing File.read(...) one can open the file and read line by line, even using an iterator in some cases: File.open(...).each_line.count { ... }.

Running

Simply do, for example, crystal 1/1.1.cr, crystal 2/2.1.cr, etc.