Denise Rocha - Binary and Decimal

Rakefile

@@ -6,4 +6,4 @@ Rake::TestTask.new do |t|
   t.test_files = FileList['test/*_test.rb']
 end
 
-task default: :test
+task default: :test

lib/binary_to_decimal.rb

@@ -4,6 +4,20 @@
 # 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
+
+binary = Array.new(8) {rand(0..1)}
+
+def binary_to_decimal(binary)
+  puts binary.join + "\n"
+  a = binary.length
+  decimal = 0
+
+  for i in 0...a do
+    reverse_index = 7 - i
+    num = binary[reverse_index].to_i * 2**i
+    decimal +=num
+  end
+  return decimal
 end
+
+binary_to_decimal(binary)