Leah - Water

lib/binary_to_decimal.rb

@@ -1,9 +1,35 @@
 # A method named `binary_to_decimal` that receives as input an array of size 8.
-# 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.
+# 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
+  dec_total = 0
+  binary_array.each do |number|
+    dec_total = 2 * dec_total + number
+  end
+
+  return dec_total
+
 end
+
+# Generates random array to pass as argument in binary_to_decimal method
+binary_numbers = Array.new(8) {rand (0..1)}
+
+binary_to_decimal(binary_numbers)
+
+
+# Test Arrays
+
+array = [1, 1, 1] #7
+
+arr2 = [1, 0, 0, 1] #9
+
+arr3 = [1, 0, 1, 1] #11
+
+arr4 = [0, 1, 1, 1] #7
+
+
+# puts binary_to_decimal(array)
+
+# puts binary_to_decimal(arr2)
+
+# puts binary_to_decimal(arr3) + binary_to_decimal(arr4)