From 48fc2bd71dc2746dc43a6b520cb238f4537cd464 Mon Sep 17 00:00:00 2001
From: Kayla Johnson <kayla.elizabeth89@gmail.com>
Date: Wed, 16 Sep 2020 13:06:15 -0700
Subject: [PATCH] Added code to change binary number to decimal

---
 lib/binary_to_decimal.rb | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/lib/binary_to_decimal.rb b/lib/binary_to_decimal.rb
index 439e8c6..89a6e1f 100644
--- a/lib/binary_to_decimal.rb
+++ b/lib/binary_to_decimal.rb
@@ -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
+    decimal_number = 0
+    exponent = binary_array.length - 1
+
+    binary_array.each do |one_or_zero|
+        decimal_number += one_or_zero * (2**exponent)
+        exponent -= 1
+     end
+
+return decimal_number
+
 end