[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

bit_manipulation/next_higher_same_ones.py

@@ -26,6 +26,7 @@
     ...
 ValueError: n must be a non-negative integer
 """
+
 from __future__ import annotations
 
 

ciphers/columnar_transposition.py

@@ -40,7 +40,12 @@ def _normalize_key(key: str) -> str:
 def _column_order(key: str) -> list[int]:
     # Stable sort by character then original index to handle duplicates
     indexed = list(enumerate(key))
-    return [i for i, _ in sorted(indexed, key=lambda indexed_pair: (indexed_pair[1], indexed_pair[0]))]
+    return [
+        i
+        for i, _ in sorted(
+            indexed, key=lambda indexed_pair: (indexed_pair[1], indexed_pair[0])
+        )
+    ]
 
 
 def encrypt(plaintext: str, key: str) -> str: