math24

Math24

Math24 is a gem providing functionality to play the base version of the Math 24 game. In the base version of Math 24, a player must combine 4 integers, using addition (+), subtraction (-), multiplication (*), or division (/) to reach 24. Extensions to the game included fraction, decimals, exponents, and other mathematical functions.

Installation

Add this line to your application's Gemfile:

gem 'math24', '~>2.0.0'

And then execute:

$ bundle

Or install it yourself as:

$ gem install math24

Note that the < 2.0.0 version of the gem is deprecated.

Usage

As of version 2.0.0, the interactive CLI version of the game has been removed.

Generate a Math 24 problem

Generate a Math 24 problem. This method will return an array of four integers, guaranteed to be a solvable Math 24 problem.

Math24.generate_problem

Check a solution

Verify a potential solution for the given problem. The problem should be passed as an array of four integers, while the solution should be a string. This method will return true if the solution is valid, and false otherwise.

Math24.check(problem, solution)

Solve a problem

Solve a given Math 24 problem. The problem should be passed as an array of four integers. This method will return an expression string containing the same four integers from the given problem that, when evaluated, will equal 24.

Math24.solve(problem)

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/randallreedjr/math24.

License

The gem is available as open source under the terms of the MIT License.