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

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

Author: pre-commit-ci[bot]

maths/base_neg2_conversion.py

@@ -1,7 +1,9 @@
 import doctest
+
+
 def decimal_to_negative_base_2(n: int) -> int:
     """
-    This function returns the number negative base 2 
+    This function returns the number negative base 2
     of the decimal number of the input data.
 
     Args:
@@ -34,5 +36,6 @@ def decimal_to_negative_base_2(n: int) -> int:
 
     return int(ans)
 
+
 if __name__ == "__main__":
     doctest.testmod()