Added return type

ZicsX · ZicsX · commit d7eb29e998a7 · 2022-06-29T19:32:55.000+05:30
diff --git a/sorts/shrink_shell.py b/sorts/shrink_shell.py
@@ -18,7 +18,7 @@
 
 """
 
-def shell_sort(collection):
+def shell_sort(collection: list) -> list:
     """Implementation of shell sort algorithm in Python
     :param collection:  Some mutable ordered collection with heterogeneous
     comparable items inside
