PORTS - CLOUDY

lib/binary_to_decimal.rb

@@ -2,8 +2,33 @@
 # 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.
-def binary_to_decimal(binary_array)
-  raise NotImplementedError
+# Calculate  and return the decimal value for this binary number using the algorithm you devised in class.
+def binary_to_decimal
+  puts "This  has not been implemented"  # makes array of 8 random elements of 0's or 1's
+  binary_array = []
+  8.times do
+    binary_array << Random.rand(2)
+  end
+
+  # here we are creating a string representation of the binary number
+  binary_string = ""
+  binary_array.each do |num|
+    binary_string += "#{num}"
+  end
+  print "The binary number is " + binary_string
+
+  decimal_sum = 0  # decimal_sum will be equivalent to final decimal value for the binary number
+  e = 0
+  i = -1 # starting at the last element of the array (index[-1])
+
+  binary_array.length.times do
+    if binary_array[i] == 1
+      decimal_sum += 2**e # if the value is equal to 1, then 2^e (starting at 0) is added to the decimal_sum
+    end
+    i -= 1
+    e += 1
+  end
+  print "\n the decimal value is " + decimal_sum.to_s + "\n"
 end
+
+puts "Calling binary to decimal"