The search for a Deciam Binary Two Bit Number™️

dec_bin.rb

# Two bit numbers
require 'active_support'

def has_two_bits?(s)
  r = false
  b = 0
  c = s.chars.sort
  c[-3] != '1' && c[-2] == '1'
end

def is_binary_two_bit?(n)
  has_two_bits?(n.to_s(2))
end

def is_decimal_two_bit?(n)
  s = n.to_s
  s =~ /^([01]+)$/ && has_two_bits?(s)
end

n = 17100000000
b = false
t = Time.now
loop do
  if is_decimal_two_bit?(n) && is_binary_two_bit?(n)
    10.times { puts "#{'#' * 100}#{'#' * 100}" }
    puts "#{n.to_s.ljust(4)} #{n.to_s(2).rjust(8, '0')}  DecimalBinary"
    10.times { puts "#{'#' * 100}#{'#' * 100}" }
    b = true
    #elsif is_binary_two_bit?(n)
    #  puts "#{n.to_s.ljust(4)} #{n.to_s(2).rjust(8, '0')}  Binary"
    #elsif is_decimal_two_bit?(n)
    #  puts "#{n.to_s.ljust(4)} #{n.to_s(2).rjust(8, '0')}  Decimal"
  end
  if (n % 100_000_000) == 0
    puts "#{Time.now} #{Time.now - t}s #{n} #{ActiveSupport::NumberHelper.number_to_rounded(n, delimiter: ',', precision: 0)} #{b}"
    t = Time.now
  end
  n += 1
end