Constraint solver for pairs
gem install pairs
Running the following file:
require 'pairs'
pairs = Pairs.new do
senior "Alice"
senior "Brad"
senior "Charles"
senior "Debbie"
junior "Edward"
junior "Felicia"
junior "Justin"
constraint { |a, b| !(junior?(a) && junior?(b)) }
together "Alice", "Edward"
separate "Brad", "Felicia"
alone "Justin"
end
pairs.solution.each do |pair|
puts pair.join(' & ')
end...could produce this output:
Felicia & Debbie
Charles & Brad
Edward & Alice
Justin