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

pre-commit-ci[bot] · pre-commit-ci[bot] · commit 5808e7c060b5 · 2025-10-04T09:59:59.000Z
for more information, see https://pre-commit.ci
diff --git a/data_structures/arrays/peak_mountain_array.py b/data_structures/arrays/peak_mountain_array.py
@@ -6,6 +6,7 @@
 
 from typing import List
 
+
 def peak_mountain(arr: List[int]) -> int:
     start, end = 0, len(arr) - 1
 
@@ -17,6 +18,7 @@ def peak_mountain(arr: List[int]) -> int:
             start = mid + 1
     return start
 
+
 if __name__ == "__main__":
     arr = [1, 2, 3, 5, 7, 8, 6, 3, 2]
     peak_index = peak_mountain(arr)
