From d0a22d90f6c7f8be651f94278e39fd9fb5bf7eb4 Mon Sep 17 00:00:00 2001 From: Pauline Sauget Date: Wed, 27 Feb 2019 18:42:14 -0800 Subject: [PATCH] Created binary_to_decimal method --- lib/binary_to_decimal.rb | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/lib/binary_to_decimal.rb b/lib/binary_to_decimal.rb index 439e8c6..fe934e8 100644 --- a/lib/binary_to_decimal.rb +++ b/lib/binary_to_decimal.rb @@ -5,5 +5,11 @@ # 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 -end + decimal, exponent = 0, 0 + exponent = binary_array.length - 1 + binary_array.length.times do |index| + decimal += binary_array[index] * (2 ** exponent) + exponent -= 1 + end + return decimal +end \ No newline at end of file