candiates.rb

require 'active_support/all'

@candidates = [
  {
    id: 5,
    years_of_experience: 4,
    github_points: 293,
    languages: ['C', 'Ruby', 'Python', 'Clojure'],
    date_applied: 5.days.ago.to_date,
    age: 26
  },
  {
    id: 7,
    years_of_experience: 1,
    github_points: 145,
    languages: ['JavaScript', 'Ruby', 'Go', 'Erlang'],
    date_applied: 15.days.ago.to_date,
    age: 19
  },
  {
    id: 9,
    years_of_experience: 6,
    github_points: 435,
    languages: ['JavaScript', 'SQL', 'C#'],
    date_applied: 1.day.ago.to_date,
    age: 32
  },
  {
    id: 10,
    years_of_experience: 3,
    github_points: 232,
    languages: ['Java', 'Ruby', 'JavaScript'],
    date_applied: 12.days.ago.to_date,
    age: 31
  },
  {
    id: 11,
    years_of_experience: 12,
    github_points: 32,
    languages: ['VB', 'Cobol', 'Fortran'],
    date_applied: 2.days.ago.to_date,
    age: 42
  },
  {
    id: 13,
    years_of_experience: 2,
    github_points: 328,
    languages: ['Python', 'Ruby', 'JavaScript'],
    date_applied: 4.days.ago.to_date,
    age: 25
  },
  {
    id: 15,
    years_of_experience: 1,
    github_points: 400,
    languages: ['JavaScript', 'Ruby'],
    date_applied: 3.days.ago.to_date,
    age: 16
  },
]

filters.rb

def find(id)
  return @candidates.select { |candidate| candidate[:id] == id }
end

def experienced?(candidate)
 return candidate[:years_of_experience] >= 2
end

def has_high_github_points?(candidate)
  return  candidate[:github_points] >= 100
end

def knows_ruby_or_python?(candidate)
  return  (candidate[:languages] & ["Ruby", "Python"]).any?
end

def applied_in_last_15_days?(candidate)
  return  Date.today - candidate[:date_applied]  <= 15;
end

def above_18?(candidate)
  return  candidate[:age]  >= 18;
end

def qualified_candidates(candidates)
  candidates.select { |c| experienced?(c) && has_high_github_points?(c) && knows_ruby_or_python?(c) && applied_in_last_15_days?(c) && above_18?(c) }
end

def ordered_by_qualifications(candidates)
  candidates.sort do |a, b|
    [b[:years_of_experience], b[:github_points]] <=> [a[:years_of_experience], a[:github_points]]
  end
end

main.rb

# This is the main entrypoint into the program
# It requires the other files/gems that it needs
require 'pp'
require './candidates'
require './filters'

## Your test code can go here
puts qualified_candidates(@candidates)
puts ordered_by_qualifications(@candidates)

pp @candidates