From 0784de7a59debfb4484cc34642cc3d33fe576fb2 Mon Sep 17 00:00:00 2001
From: karrad1201 <karad120109@gmail.com>
Date: Wed, 4 Feb 2026 22:15:45 +0500
Subject: [PATCH] Add type annotations to merge_sort

---
 sorts/merge_sort.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sorts/merge_sort.py b/sorts/merge_sort.py
index 11c202788035..10db332fa099 100644
--- a/sorts/merge_sort.py
+++ b/sorts/merge_sort.py
@@ -10,7 +10,7 @@
 """
 
 
-def merge_sort(collection: list) -> list:
+def merge_sort(collection: list[int]) -> list[int]:
     """
     Sorts a list using the merge sort algorithm.
 
@@ -29,7 +29,7 @@ def merge_sort(collection: list) -> list:
     [-45, -5, -2]
     """
 
-    def merge(left: list, right: list) -> list:
+    def merge(left: list[int], right: list[int]) -> list[int]:
         """
         Merge two sorted lists into a single sorted list.