二进制到十进制终端脚本

Posted 2021-02-26

def binary_to_decimal(x)
  y = 1
  z = 0
  x.gsub(/ /,'').reverse.scan(/(0|1)/).each do |x|
    z = z + (y * x[0].to_i)
    y *= 2
  end
  z
end
 
number = gets.chomp
puts binary_to_decimal(number)