总和leetcode 39

Leetcode 24. 两两交换链表中的节点(Swap nodes in pairs)

[题目链接](https://leetcode.cn/problems/swap-nodes-in-pairsn/) 给你一个链表,两两交换其中相邻的节点,并返回交换后链表的头节点。你必须在不修改节点内部的值的情况下完成本题(即,只能进行节点交换)。 示例 1: ![](https://img202 ......
节点 Leetcode nodes pairs Swap

[LeetCode][338]counting-bits

# Content Given an integer n, return an array ans of length n + 1 such that for each i (0 <= i <= n), ans[i] is the number of 1's in the binary repres ......
counting-bits LeetCode counting bits 338

【五期邹昱夫】CCF-A(TIFS'23)SAFELearning: Secure Aggregation in Federated Learning with Backdoor Detectability

> "Zhang, Zhuosheng, et al. "SAFELearning: Secure Aggregation in Federated Learning with Backdoor Detectability." IEEE Transactions on Information For ......

John's troubles began 原文(2023年口语考试模拟题1)

John Dancer’s troubles began at once when he walked into Holiday Hotel with his friend,Charlie.Together they went to the information desk.John said,“G ......
模拟题 口语 原文 troubles began

git log 出现Merge branch 'xxxx' of

场景: 多人合作开发时,同拉取远程仓库分支 Feature A开发者拉取Feature分支代码后在本地开发并commit 过, 但并未push到远程仓库。 B开发者拉取Feature分支代码后在本地开发并commit, 随后push到远程分支。 这时A开发者再push代码到远程分支会提示先 git ......
branch Merge 39 xxxx git

Python 字典的取值,“[]取值”和“get取值”的区别, stu['name']和stu.get('name')都可以取值,但是 stu['name']如果键写错的话,程序会报错,为了程序的健壮性,推荐使用get方式

Python 字典的取值,“[]取值”和“get取值”的区别, stu['name']和stu.get('name')都可以取值,但是 stu['name']如果键写错的话,程序会报错,为了程序的健壮性,推荐使用get方式 stu = {'name':'lfj', 'age':18} # get方式 ......
39 name 程序 get stu

python ModuleNotFoundError: No module named 'Util'问题解决方案

ModuleNotFoundError: No module named 'Util' 分两种情况来谈这个问题。 1.第一种是没有安装出现这个问题有如下解决方法: python2安装:pip install web.py python3安装:pip install web.py==0.40-dev1 ......

[LeetCode][337]house-robber-iii

# Content The thief has found himself a new place for his thievery again. There is only one entrance to this area, called root. Besides the root, each ......
house-robber-iii LeetCode robber house 337

银河麒麟桌面安装pyautogui后导入失败:display = Display(os.environ['DISPLAY'])

大家好我是Tarzan,今天在银河麒麟安装pyautogui后提示`DISPLAY`获取不到,uos上目前没有遇到这个问题,记录一下解决办法。 ### 安装pyautogui 1. 先安装一个库:`pip3 install pyscreeze==0.1.28` 2. 安装pyautogui: `pi ......
pyautogui 桌面 display Display DISPLAY

[LeetCode][322]coin-change

# Content You are given an integer array coins representing coins of different denominations and an integer amount representing a total amount of mone ......
coin-change LeetCode change coin 322

'socket' object has no attribute 'pending' #857

### 背景 > 使用websocket-client调用星火api出现上述错误 ### 原因 1.4.1及以下版本是根据sslopt来判断是否使用wss,但是url可能传的并不是wss前缀导致报错。 作者在后续版本中改成根据url是不是以wss://开头判断是不是ssl ![](https://i ......
39 attribute pending socket object

[LeetCode][312]burst-balloons

# Content You are given n balloons, indexed from 0 to n - 1. Each balloon is painted with a number on it represented by an array nums. You are asked t ......
burst-balloons LeetCode balloons burst 312

Tool are in unnamed module of loader 'app

这就是典型的类型转换问题,出现这个错误就说明类型转换有误 参考:https://blog.csdn.net/justleavel/article/details/128613595 跟泛型有关? 发现原因:有两个Tool类。。。其中调用的参数里是一个Tool类。。而实现类实现的是另一个Tool类。。 ......
unnamed module loader Tool are

Bugku-web39(CBC反转攻击)

![images](https://img2023.cnblogs.com/blog/1845942/202308/1845942-20230830085906487-1323608896.png) 传入cipher:: o0Na0VUpA9NNqK5lQTP3chZqec57H%2FAMEkq5Y ......
Bugku-web Bugku web CBC 39

[LeetCode] 2483. Minimum Penalty for a Shop

You are given the customer visit log of a shop represented by a 0-indexed string customers consisting only of characters 'N' and 'Y': if the ith chara ......
LeetCode Minimum Penalty 2483 Shop

【五期邹昱夫】CCF-A(SP'23)3DFed: Adaptive and Extensible Framework for Covert Backdoor Attack in Federated Learning

> "Li, Haoyang, et al. "3DFed: Adaptive and Extensible Framework for Covert Backdoor Attack in Federated Learning." 2023 IEEE Symposium on Security an ......

leetcode & c++多线程刷题日志

## 1.按序打印 [按序打印](https://leetcode.cn/problems/print-in-order/description/) **解法** + 1. 互斥锁 ```c++ class Foo { mutex mtx1, mtx2; public: Foo() { mtx1.l ......
线程 leetcode 日志 amp

docker build过程中遇到错误qemu-x86_64: Could not open '/lib64/ld-linux-x86-64.so.2': No such file or directory

```text Removing intermediate container 70af516d5d6b > a69229847153 Step 5/6 : RUN GO111MODULE="on" go get github.com/jsonnet-bundler/jsonnet-bundler/ ......
ld-linux-x directory 64 错误 过程

PyQt/PySide's qwindows.dll qwindowsvistastyle.dll is corrupted by UPX

Windows 10 64-bits Python 3.8.10 64-bits PySide2 5.15.2 PyInstaller 4.3 UPX 4.1.0 it raises: > "This application failed to start because no Qt platfor ......

医学案例|Cochran's Q检验

一、案例介绍 当前有一名医生拟评价药物A对50名高血压患者的降压效果。在患者服用药物A后的第3天、第5天和第7天时分别进行记录。该医生想知道服用药物A的高血压患者血压是否一直在好转。血压好转赋值为1,血压没变化赋值为0,。部分数据如下: 二、问题分析 比较三组或多组二分类变量平均值是否存在显著差异, ......
案例 Cochran 医学 39

[React Typescript] Fixing forwardRef's Type

Fix forwardRef globally To jump ahead to the solution, uncommenting the following code from Stefan Baumgartner will globally override the value of for ......
Typescript forwardRef Fixing React Type

ModuleNotFoundError: No module named 'flask._compat’

原因:flask版本过高,flask里面的 ._compat.py文件没有; 解决方案1:解决:降低flask版本,1.1.2即可 pip install flask==1.1.2 解决方案2:更改flask_script文件,Ctrl + 左键 进入到flask_script的 __init__. ......

Leetcode刷题笔记——单调性

## 单调性 单调性是数学中使用的一种常见性质,通常用于描述函数,在高等数学中的定义常常为: 设函数f(x)在区间I上有定义,如果对于I上的任意两个数x1和x2,当x1f(x2)),则称函数f(x)在区间I上是单调递增的(或者单调递减的)。 例如如下图像就是两个单调函数。 ![](https://i ......
Leetcode 笔记

opencv-python报错:Exception: Not found: 'python/cv2/py.typed'

报错: self).run_setup(setup_script=setup_script) File "/tmp/pip-build-env-zsqslesq/overlay/lib/python3.6/site-packages/setuptools/build_meta.py", line 1 ......
python opencv-python Exception opencv found

Leetcode 剑指Offer 05. 替换空格(Ti huan kong ge lcof)

[题目链接](https://leetcode.cn/problems/ti-huan-kong-ge-lcof) 请实现一个函数,把字符串 s 中的每个空格替换成"%20"。 示例 1: ``` 输入:s = "We are happy." 输出:"We%20are%20happy." ``` 提 ......
空格 Leetcode Offer huan kong

UnicodeEncodeError: 'gbk' codec can't encode character '\ue1bb' in position 1523: illegal multibyte sequence

环境 操作系统:Windows11 开发环境:Pycharm 2021.4 虚拟环境管理:Conda 操作流程:打开Pycharm -> 打开Terminal 错误信息 # >>>>>>>>>>>>>>>>>>>>>> ERROR REPORT <<<<<<<<<<<<<<<<<<<<<< Trac ......

[LeetCode][309]best-time-to-buy-and-sell-stock-with-cooldown

# Content You are given an array prices where prices[i] is the price of a given stock on the ith day. Find the maximum profit you can achieve. You may ......

通过pandas读取excel数据,很多数据开头带有'特殊字符,如何处理?

大家好,我是皮皮。 ### 一、前言 前几天在Python最强王者群【wen】问了一个`Pandas`数据处理的问题,一起来看看吧。 请教问题:通过pandas读取excle数据,很多数据开头带有'特殊字符,我用replace或者strip()函数处理均无法处理。 ![image.png](http ......
数据 开头 字符 pandas excel

[LeetCode 11]盛最多水的容器 二分

emmm看到这题第一反应是二分_(:з」∠)_ 首先可以观察到,假设我们目前敲定了2块板l和r,那么在l和r之间,低于l和r的板子都是无效的(这个应该显而易见)。 基于这个性质对无效板进行消除,最后会得到一个山峰形(先单调不降,后单调不升) 现在考虑对山峰形如何求解。 考虑枚举每个有效板作为边界,寻 ......
容器 LeetCode 11

20. 股东权益变化表 Statement of Owner's Equity

股权融资与负债融资相比,前者虽然降低了企业破产的风险,但他同时也稀释了股东权益。 四大财务报表的第四张正是**股东权益变动表** Statement of Owner's Equity ##通过股东权益变动表来呈现股权融资状况 ### 1. 股票发行 老王公司授权1万股普通股,**股票面值**1元 ......
股东 Statement 权益 Equity Owner