HyperPublic Challenge 1

#!/usr/bin/env ruby

class Influence 

  def get_data_lines
    file_path  = File.dirname(__FILE__) + '/input.txt'
    input_data = File.read(file_path)

    return input_data.split("\n")
  end

  def initialize
    @users = []
    get_data_lines.each_with_index do |user_data, user_id|
      @users << []
      data = user_data.split(//)

      data.each_with_index do |cell, index|
        @users[user_id] << index if cell == "X"
      end
    end

    user_influence = []
    0.upto(@users.length - 1) { |x| user_influence[x] = track_influence(x) }

    user_influence.sort!.reverse!
    puts "#{user_influence[0]}#{user_influence[1]}#{user_influence[2]}"
  end

  def track_influence(user_id, current = 0)
    added_users = @users[user_id]
    influence   = current
    influence  += added_users.length
    added_users.each { |new_id| influence += track_influence(new_id) }

    return influence
  end

end

calculate = Influence.new