build

chapter_searching/binary_search.md

@@ -98,7 +98,7 @@ $$
 === "Python"
 
     ```python title="binary_search.py"
-    def binary_search(nums, target):
+    def binary_search(nums: List[int], target: int) -> int:
         """ 二分查找（双闭区间） """
         # 初始化双闭区间 [0, n-1] ，即 i, j 分别指向数组首元素、尾元素
         i, j = 0, len(nums) - 1
@@ -309,7 +309,7 @@ $$
 === "Python"
 
     ```python title="binary_search.py"
-    def binary_search1(nums, target):
+    def binary_search1(nums: List[int], target: int) -> int:
         """ 二分查找（左闭右开） """
         # 初始化左闭右开 [0, n) ，即 i, j 分别指向数组首元素、尾元素+1
         i, j = 0, len(nums)

chapter_searching/hashing_search.md

@@ -45,7 +45,7 @@ comments: true
 === "Python"
 
     ```python title="hashing_search.py"
-    def hashing_search_array(mapp, target):
+    def hashing_search_array(mapp: Dict[int, int], target: int) -> int:
         """ 哈希查找（数组） """
         # 哈希表的 key: 目标元素，value: 索引
         # 若哈希表中无此 key ，返回 -1
@@ -163,11 +163,11 @@ comments: true
 === "Python"
 
     ```python title="hashing_search.py"
-    def hashing_search_linkedlist(mapp, target):
+    def hashing_search_linkedlist(mapp: Dict[int, ListNode], target: int) -> Optional[ListNode]:
         """ 哈希查找（链表） """
         # 哈希表的 key: 目标元素，value: 结点对象
-        # 若哈希表中无此 key ，返回 -1
-        return mapp.get(target, -1)
+        # 若哈希表中无此 key ，返回 None
+        return mapp.get(target, None)
     ```
 
 === "Go"

chapter_searching/linear_search.md

@@ -49,7 +49,7 @@ comments: true
 === "Python"
 
     ```python title="linear_search.py"
-    def linear_search_array(nums, target):
+    def linear_search_array(nums: List[int], target: int) -> int:
         """ 线性查找（数组） """
         # 遍历数组
         for i in range(len(nums)):
@@ -206,7 +206,7 @@ comments: true
 === "Python"
 
     ```python title="linear_search.py"
-    def linear_search_linkedlist(head, target):
+    def linear_search_linkedlist(head: ListNode, target: int) -> Optional[ListNode]:
         """ 线性查找（链表） """
         # 遍历链表
         while head: