From 7431e9d4a167e90b7a6539803d355e70ba751b6a Mon Sep 17 00:00:00 2001 From: Samantha Coll Date: Sun, 1 Sep 2019 12:17:46 -0700 Subject: [PATCH] "implmented binary_to_decimal, tests pass" --- lib/binary_to_decimal.rb | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/lib/binary_to_decimal.rb b/lib/binary_to_decimal.rb index 439e8c6..0b911ae 100644 --- a/lib/binary_to_decimal.rb +++ b/lib/binary_to_decimal.rb @@ -2,8 +2,14 @@ # The array is randomly filled with 0’s and 1’s. # The most significant bit is at index 0. # The least significant bit is at index 7. -# 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 +# Calculate and return the decimal value for this binary number using the algorithm you devised in class. + +def binary_to_decimal(binary_array) + decimal_num = 0 + binary_array.each_with_index do |bit_num, i| + if bit_num == 1 + decimal_num += 2**(7-i) + end + end + return decimal_num end