Calculates lucky numbers up to a given limit, and prints the list of unlucky numbers removed for each lucky number

lucky_numbers.rb

limit = 1000

nums = (1..limit).to_a

([1] + nums).each do |a|
  lucky_num = nums[a]
  unlucky_nums = nums.values_at(* nums.each_index.select {|i| (i+1) % lucky_num == 0})
  if unlucky_nums.size == 0
    break
  else
    puts "#{lucky_num}-unlucky numbers: #{unlucky_nums}"
  end
  nums.each_index.select {|i| (i+1) % lucky_num == 0}.reverse.each {|i| nums.delete_at i}
end

puts "Lucky numbers from 1 to #{limit}: #{nums}"