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Update array_hash_map.py (#1803)

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基于数组实现的哈希表中，`get()` 函数的返回值还可能会 None；且 `put()` 函数不仅可添加键值对、还可更新表中已有键值对的值；
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sunshinesDL
2025-09-20 19:09:03 +08:00
committed by GitHub
parent 3709a97ca7
commit 1e6a84119a
1 changed files with 2 additions and 2 deletions
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4
codes/python/chapter_hashing/array_hash_map.py
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@ -26,7 +26,7 @@ class ArrayHashMap:
index = key % 100 index = key % 100
return index return index
def get(self, key: int) -> str: def get(self, key: int) -> str | None:
"""查询操作""" """查询操作"""
index: int = self.hash_func(key) index: int = self.hash_func(key)
pair: Pair = self.buckets[index] pair: Pair = self.buckets[index]
@ -35,7 +35,7 @@ class ArrayHashMap:
return pair.val return pair.val
def put(self, key: int, val: str): def put(self, key: int, val: str):
"""添加操作""" """添加和更新操作"""
pair = Pair(key, val) pair = Pair(key, val)
index: int = self.hash_func(key) index: int = self.hash_func(key)
self.buckets[index] = pair self.buckets[index] = pair