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11 changes: 10 additions & 1 deletion lib/binary_to_decimal.rb
Original file line number Diff line number Diff line change
Expand Up @@ -5,5 +5,14 @@
# Calculate and return the decimal value for this binary number using
# the algorithm you devised in class.
def binary_to_decimal(binary_array)
raise NotImplementedError
total_value = 0
binary_array.each_with_index do |value,index|
exponent = (binary_array.length - 1) - index
if value == 1
total_value += 2**exponent
end
end
return total_value
end

end