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chapter_array_and_linkedlist/array.md

@@ -494,7 +494,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
 === "Python"
 
     ```python title="array.py"
-    def insert(nums: list[int], num: int, index: int) -> None:
+    def insert(nums: list[int], num: int, index: int):
         """在数组的索引 index 处插入元素 num"""
         # 把索引 index 以及之后的所有元素向后移动一位
         for i in range(len(nums) - 1, index, -1):
@@ -649,7 +649,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
 === "Python"
 
     ```python title="array.py"
-    def remove(nums: list[int], index: int) -> None:
+    def remove(nums: list[int], index: int):
         """删除索引 index 处元素"""
         # 把索引 index 之后的所有元素向前移动一位
         for i in range(index, len(nums) - 1):
@@ -798,7 +798,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
 === "Python"
 
     ```python title="array.py"
-    def traverse(nums: list[int]) -> None:
+    def traverse(nums: list[int]):
         """遍历数组"""
         count = 0
         # 通过索引遍历数组