Done

lib/array_crud.rb

@@ -1,35 +1,35 @@
 def create_an_empty_array
-
+  return []
 end
 
 def create_an_array
-
+  return [1,2,3,4]
 end
 
 def add_element_to_end_of_array(array, element)
-
+  return array.push(element)
 end
 
 def add_element_to_start_of_array(array, element)
-
+  return array.unshift(element)
 end
 
 def remove_element_from_end_of_array(array)
-
+  return array.pop()
 end
 
 def remove_element_from_start_of_array(array)
-
+  return array.shift()
 end
 
 def retrieve_element_from_index(array, index_number)
-
+  return array[index_number]
 end
 
 def retrieve_first_element_from_array(array)
-
+  return array[0]
 end
 
 def retrieve_last_element_from_array(array)
-
+  return array[-1]
 end