build

chapter_hashing/hash_map.md

@@ -617,7 +617,7 @@ $$
         def __init__(self):
             """ 构造方法 """
             # 初始化数组，包含 100 个桶
-            self.buckets: List[Optional[Entry]] = [None] * 100
+            self.buckets: list[Entry | None] = [None] * 100
 
         def hash_func(self, key: int) -> int:
             """ 哈希函数 """
@@ -644,25 +644,25 @@ $$
             # 置为 None ，代表删除
             self.buckets[index] = None
 
-        def entry_set(self) -> List[Entry]:
+        def entry_set(self) -> list[Entry]:
             """ 获取所有键值对 """
-            result: List[Entry] = []
+            result: list[Entry] = []
             for pair in self.buckets:
                 if pair is not None:
                     result.append(pair)
             return result
 
-        def key_set(self) -> List[int]:
+        def key_set(self) -> list[int]:
             """ 获取所有键 """
-            result: List[int] = []
+            result: list[int] = []
             for pair in self.buckets:
                 if pair is not None:
                     result.append(pair.key)
             return result
 
-        def value_set(self) -> List[str]:
+        def value_set(self) -> list[str]:
             """ 获取所有值 """
-            result: List[str] = []
+            result: list[str] = []
             for pair in self.buckets:
                 if pair is not None:
                     result.append(pair.val)