From 05cf98181ece4d283004552a6376b0ac65ad05d9 Mon Sep 17 00:00:00 2001
From: Divya <divyamohanan@gmail.com>
Date: Wed, 22 Aug 2018 21:21:01 -0700
Subject: [PATCH] I created binary_to_decimal.rb

---
 lib/binary_to_decimal.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/binary_to_decimal.rb b/lib/binary_to_decimal.rb
index 439e8c6..4a9c459 100644
--- a/lib/binary_to_decimal.rb
+++ b/lib/binary_to_decimal.rb
@@ -5,5 +5,9 @@
 # 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
+  sum = 0
+  binary_array.each_with_index do |num, index|
+    sum += 2**(7-index) if num == 1
+  end
+  return sum
 end