ruby - flatten-array (cleanup)

ruby/flatten-array/flatten_array.rb

@@ -1,12 +1,8 @@
 class FlattenArray
-  def self.flatten(array)
+  def self.flatten(array, result = [])
-    recursive_flatten(array)
-  end
-
-  def self.recursive_flatten(array, result = [])
     array.each do |a|
       if a.is_a? Array
-        recursive_flatten(a, result)
+        flatten(a, result)
       else
         result << a unless a.nil?
       end