Danielle Metzner - Array Equals

lib/array_equals.rb

@@ -1,5 +1,37 @@
 # 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)
-  raise NotImplementedError
+  #raise NotImplementedError
+#Check for the nil class first because array methods will not work
+  if array1 == nil || array2 == nil
+    if array1 == nil && array2 == nil
+      return true
+    else
+      return false
+    end
+  end
+
+#Check for empty arrays
+  if array1[0]==nil && array2[0]==nil
+    return true
+  elsif (array1[0] == nil) || (array2[0] == nil)
+    return false
+  end
+
+#Now we know that at least both arrays have elements we can determine their length
+#and look at each element to see if each index is the same.
+  len1 = array1.length
+  len2 = array2.length
+
+  if len2 != len1
+    return false
+  end
+
+
+  len1.times do |index|
+    if array1[index] != array2[index]
+      return false
+    end
+  end
+  return true
 end