Melissa O'Hearn BinarytoDecimal.rb

Melissa O'Hearn BinarytoDecimal.rb

@@ -0,0 +1,14 @@
+# 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.
+# def binary_to_decimal(binary_array)
+#   raise NotImplementedError
+# end
+
+def binary_to_decimal(bin_array)
+  decimal = (bin_array[7] * 1) + (bin_array[6] * 2) + (bin_array[5] * 4) + (bin_array[4] * 8) + (bin_array[3] * 16) + (bin_array[2] * 32) + (bin_array[1] * 64) + (bin_array[0] * 128)
+return decimal
+end

array_equals.rb

@@ -0,0 +1,34 @@
+# Determines if the two input arrays have the same count of elements
+# and the same integer values in the same exact order
+
+
+
+
+def array_equals(array1, array2)
+if array1 == nil && array2 == nil
+  return true
+elsif array1 == nil || array2 == nil
+  return false
+end
+
+
+
+if array1.length != array2.length
+  return false
+
+end
+
+
+array1.length.times do |index|
+
+  if array1[index] != array2[index]
+    return false
+  end
+end
+
+
+
+
+return true
+
+end