xinyin025/hello-algo
1
0
Fork 0
mirror of https://github.com/krahets/hello-algo.git synced 2026-06-28 08:34:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
* 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
Download Patch File Download Diff File Expand all files Collapse all files
codes/python/chapter_array_and_linkedlist/list.py
+24 -29
View File
@@ -4,60 +4,55 @@ Created Time: 2022-11-25
Author: Krahets (krahets@163.com)
"""
import sys, os.path as osp
sys.path.append(osp.dirname(osp.dirname(osp.abspath(__file__))))
from modules import *
""" Driver Code """
if __name__ == "__main__":
""" 初始化列表 """
list: List[int] = [1, 3, 2, 5, 4]
print("列表 list =", list)
arr: list[int] = [1, 3, 2, 5, 4]
print("列表 arr =", arr)
""" 访问元素 """
num: int = list[1]
num: int = arr[1]
print("访问索引 1 处的元素，得到 num =", num)
""" 更新元素 """
list[1] = 0
print("将索引 1 处的元素更新为 0 ，得到 list =", list)
arr[1] = 0
print("将索引 1 处的元素更新为 0 ，得到 arr =", arr)
""" 清空列表 """
list.clear()
print("清空列表后 list =", list)
arr.clear()
print("清空列表后 arr =", arr)
""" 尾部添加元素 """
list.append(1)
list.append(3)
list.append(2)
list.append(5)
list.append(4)
print("添加元素后 list =", list)
arr.append(1)
arr.append(3)
arr.append(2)
arr.append(5)
arr.append(4)
print("添加元素后 arr =", arr)
""" 中间插入元素 """
list.insert(3, 6)
print("在索引 3 处插入数字 6 ，得到 list =", list)
arr.insert(3, 6)
print("在索引 3 处插入数字 6 ，得到 arr =", arr)
""" 删除元素 """
list.pop(3)
print("删除索引 3 处的元素，得到 list =", list)
arr.pop(3)
print("删除索引 3 处的元素，得到 arr =", arr)
""" 通过索引遍历列表 """
count: int = 0
for i in range(len(list)):
for i in range(len(arr)):
count += 1
""" 直接遍历列表元素 """
count: int = 0
for n in list:
for n in arr:
count += 1
""" 拼接两个列表 """
list1: List[int] = [6, 8, 7, 10, 9]
list += list1
print("将列表 list1 拼接到 list 之后，得到 list =", list)
arr1: list[int] = [6, 8, 7, 10, 9]
arr += arr1
print("将列表 arr1 拼接到 arr 之后，得到 arr =", arr)
""" 排序列表 """
list.sort()
print("排序列表后 list =", list)
arr.sort()
print("排序列表后 arr =", arr)