Last Sync: 2025-07-04 22:32 (Mobile)

Author: lighting9999

data_structures/binary_tree/binary_search_tree.py

@@ -91,11 +91,12 @@
 
 from __future__ import annotations
 
+
 from collections.abc import Iterable, Iterator
 from dataclasses import dataclass
+from pprint import pformat
 from typing import Any, Self
 
-
 @dataclass
 class Node:
     value: int
@@ -115,7 +116,6 @@ def __iter__(self) -> Iterator[int]:
         yield from self.right or []
 
     def __repr__(self) -> str:
-        from pprint import pformat
 
         if self.left is None and self.right is None:
             return str(self.value)

data_structures/binary_tree/diff_views_of_binary_tree.py

@@ -173,7 +173,6 @@ def binary_tree_bottom_side_view(root: TreeNode) -> list[int]:
     >>> binary_tree_bottom_side_view(None)
     []
     """
-    from collections import defaultdict
 
     def breadth_first_search(root: TreeNode, bottom_view: list[int]) -> None:
         """