weighted_sample

This gem add Enumerable#weighted_sample_by mehtod.

Installation

Add this line to your application's Gemfile:

gem 'weighted_sample'

And then execute:

$ bundle

Or install it yourself as:

$ gem install weighted_sample

Usage

[1, 9].weighted_sample_by {|x| x} => 9(90%) or 1(10%)

Restrictions

  • Weight is zero or positive Integer(Negative or Float is not allowed).
  • Sum of weights should > 0

Contributing

  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Added some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request