binary

binary.rb

def binary(binary_string)
  if !(binary_string.is_a?(String)) || binary_string.match(/[^0,1]/)
    raise TypeError.new("Input must be only 0s and 1s") 
  end

  total = 0
  binary_string.reverse.split("").each_with_index do |bit, index|
    total += bit.to_i * 2 ** index
  end
  total
end

def trinary(trinary_string)
  if !(trinary_string.is_a?(String)) || trinary_string.match(/[^0,1,2]/)
    raise TypeError.new("Input must be only 0s and 1s and 2s") 
  end

  total = 0
  trinary_string.reverse.split("").each_with_index do |bit, index|
    total += bit.to_i * 3 ** index
  end
  total
end

binary_spec.rb

def binary(binary_string)
  if !(binary_string.is_a?(String)) || binary_string.match(/[^0,1]/)
    raise TypeError.new("Input must be only 0s and 1s") 
  end

  total = 0
  binary_string.reverse.split("").each_with_index do |bit, index|
    total += bit.to_i * 2 ** index
  end
  total
end

def trinary(trinary_string)
  if !(trinary_string.is_a?(String)) || trinary_string.match(/[^0,1,2]/)
    raise TypeError.new("Input must be only 0s and 1s and 2s") 
  end

  total = 0
  trinary_string.reverse.split("").each_with_index do |bit, index|
    total += bit.to_i * 3 ** index
  end
  total
end