Selectra Technical Challenge

Welcome to Selectra's technical tests suite. In this game, you will be building a simple billing service.

Instructions

• Clone this repository
• Solve as many levels as you can, and in ascending order
• Commit your code at the end of each level
• Give part2 a try, even if you have not fully finished part1
• Email [email protected] when you are done, with a link to your GitHub repository!

Levels become more complex over time, so you will probably have to re-use some code and adapt it to the new requirements.

Requirements

• Pick either PHP or Ruby
• Clean, readable and robust code
• Follow Software Development best practices

Please do try to do the simplest thing that could work first.