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refactor: Follow the PEP 585 Typing standard (#439)

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* Follow the PEP 585 Typing standard

* Update list.py
This commit is contained in:
Yudong Jin
2023-03-23 18:51:56 +08:00
committed by GitHub
parent f4e01ea32e
commit 8918ec9079
43 changed files with 256 additions and 342 deletions
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14
codes/python/chapter_searching/hashing_search.py
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@@ -8,13 +8,13 @@ import sys, os.path as osp
sys.path.append(osp.dirname(osp.dirname(osp.abspath(__file__))))
from modules import *
def hashing_search_array(mapp: Dict[int, int], target: int) -> int:
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
return mapp.get(target, -1)
def hashing_search_linkedlist(mapp: Dict[int, ListNode], target: int) -> Optional[ListNode]:
def hashing_search_linkedlist(mapp: dict[int, ListNode], target: int) -> ListNode | None:
""" 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 None
@@ -26,18 +26,18 @@ if __name__ == '__main__':
target: int = 3
# 哈希查找（数组）
nums: List[int] = [1, 5, 3, 2, 4, 7, 5, 9, 10, 8]
nums: list[int] = [1, 5, 3, 2, 4, 7, 5, 9, 10, 8]
# 初始化哈希表
mapp: Dict[int, int] = {}
map0 = dict[int, int]()
for i in range(len(nums)):
mapp[nums[i]] = i # key: 元素，value: 索引
index: int = hashing_search_array(mapp, target)
map0[nums[i]] = i # key: 元素，value: 索引
index: int = hashing_search_array(map0, target)
print("目标元素 3 的索引 =", index)
# 哈希查找（链表）
head: ListNode = list_to_linked_list(nums)
# 初始化哈希表
map1: Dict[int, ListNode] = {}
map1 = dict[int, ListNode]()
while head:
map1[head.val] = head # key: 结点值，value: 结点
head = head.next