Optimized recursive_bubble_sort (#2410)

* optimized recursive_bubble_sort

* Fixed doctest error due whitespace

* reduce loop times for optimization

* fixup! Format Python code with psf/black push

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

data_structures/binary_tree/avl_tree.py

@@ -109,7 +109,7 @@ def right_rotation(node):
 
 def left_rotation(node):
     """
-        a mirror symmetry rotation of the left_rotation
+    a mirror symmetry rotation of the left_rotation
     """
     print("right rotation node:", node.get_data())
     ret = node.get_right()