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[LeetCode] 1337. The K Weakest Rows in a Matrix 矩阵中战斗力最弱的 K 行
You are given an m x n binary matrix mat of 1's (representing soldiers) and 0's (representing civilians). The soldiers are positioned in front of the ......
Python之禅, 作者Tim Peters(The Zen of Python, by Tim Peters)
The Zen of Python, by Tim Peters Beautiful is better than ugly. 美丽的比丑陋的好。 Explicit is better than implicit. 明确的比隐含的好。 Simple is better than complex. 简 ......
《oracle马拉松》plsql篇-解决连接oracle，报错TNS :could not resolve the connect identifier specified的问题
今天老师给了一个数据库，我想先看看，然后又不想破坏我现在的数据库数据（因为表名相同）所以就再新建了一个数据库，本来想着很简单就可以解决了，没想到用plsql连接时报了could not resolve the connect identifier specified的错误 解决 1先检查Oracle ......
关于 Web 应用的 Above-the-Fold Loading 加载机制
Above-the-Fold Loading 是一种网页加载技术，可以让网页的上半部分尽快地显示在屏幕上，让用户能够更快地看到网页的内容，提高用户体验。具体来说，Above-the-Fold Loading 会优先加载页面上部分所需的 HTML、CSS、JS等资源，而不是等到所有资源都加载完毕后再一 ......
Above-the-Fold Loading 加载机制在 Spartacus Storefront 里的应用
Angular 应用默认情况下，Component 组件总是被积极渲染，不管组件是否在用户的 viewports 中。 这可能对性能带来负面影响，但可以通过评估视口与组件来进行优化—— View ports 内（或附近）的所有组件都应该加载，其他组件可以延迟。 作为延迟加载的一个积极的副产物，我们将 ......
虚拟机报错：AVD xxx is already running.If that is not the case, delete the files
试过很多方法，文件删除后，加载仍然出这个错误。 我之后又想想，再添加一个虚拟机怎样，添加后运行便可以了。 ......
docker启动出现Job for docker.service failed because the control process exited error code问题
只需要修改docker.server文件即可： 执行以下命令： vim vim /lib/systemd/system/docker.service 然后将ExecStart=/usr/bin/dockerd -H fd:// 改成ExecStart=/usr/bin/dockerd -H fd:/ ......
Measuring the diversity of recommendations: a preference-aware approach for evaluating and adjusting diversity
Meymandpour R. and Davis J. G. Measuring the diversity of recommendations: a preference-aware approach for evaluating and adjusting diversity. Knowled ......
D. Keep the Average High
https://codeforces.com/problemset/problem/1616/D great question! 题解：首先我们令a[i]-=x,这样条件变成了区间和>=0.由裴蜀定理，n可以分解为2x+3y。 我们提出以下命题：对于a中任意子串之和>=0等价于任意长度为2或3的子串 ......
java.lang.UnsupportedClassVersionError: (class file version 61.0), this version of the Java Runtime only recognizes 52
问题背景，新建5个springboot modules。使用相同的依赖 pom.xml 文件。其中 4 个工程正常启动。有一个如图：GulimallWareApplication 跑不起来。报错版本不对。 本人机器上只配置了 1.8 的jdk。所以很纳闷。原以为是不是新版本 idea 自带（刚刚下载 ......
03.Forecasting the realized volatility of stock price index A hybrid model integrating CEEMDAN and LSTM
Forecasting the realized volatility of stock price index A hybrid model integrating CEEMDAN and LSTM 预测股票价格指数的实际波动率 CEEMDAN 和 LSTM 的混合模型 波动率：波动率是金融资产价 ......
ignore the hidden files in python
import os root = "/Users/Siddhartha/Desktop/py scripts" for item in os.listdir(root): if not item.startswith('.') and os.path.isfile(os.path.join(root ......
what's the difference between const and constexpr in C++?
Both const and constexpr are used to define constants in C++, but they have different meanings and use cases. const is used to declare a variable as c ......
what are the primitive types of C++?
In C++, there are several primitive data types, which are also known as fundamental or built-in data types. These include: Integer types: Used to repr ......
The Witness Set
$\text{Special For The Witness}$ 简介 说实话这个版块是对于$\text{The Witness}$这一游戏的致敬， 只为它给我带来的强烈的思维和视觉的双重冲击，让我体验到什么才真正可以被称作“第九艺术”。 不论是整个游戏的画质还是其中谜题的质感都让我回味无穷， 特别 ......
Could not find a version that satisfies the requirement ModuleName
pip换源 pip使用官方源常见错误Could not find a version that satisfies the requirement ModuleName, 推荐永久修改成豆瓣源. pip config set global.index-url https://pypi.douban. ......
MinIO上传文件The difference between the request time and the server's time is too large.异常
问题 向MinIO上传文件时，抛出异常：The difference between the request time and the server‘s time is too large. 使用date命令修改CentOS时间后，异常依然存在。 相关Linux命令 查看系统时间：date 查看硬件 ......
Using the Spring @RequestMapping Annotation
@RequestMapping is one of the most common annotation used in Spring Web applications. This annotation maps HTTP requests to handler methods of MVC and ......
使用echarts防止出现“There is a chart instance already initialized on the dom.”的警告
var myChart; function historyMapInit(query_date) { //防止出现“There is a chart instance already initialized on the dom.”的警告 //在使用echarts发现需要及时对新建的myChart实 ......
论文阅读笔记：Descent methods for elastic body simulation on the GPU (源代码及实现细节)
材料来源于 Descent methods for elastic body simulation on the GPU, ACMTransactions on Graphics (TOG), 2016. 0. 概述 在本论文中，提出了一种***。下面将详细介绍该方法的源代码及实现细节，并对照论文中 ......
The command "npm run build" exited with code 1
新环境下，创建了一个Vue.js for VS: 在build时，出现了如标题一样的错误异常。The command "npm run build" exited with code 1。 第一步： npm run build -- --prod 第二步： npm run build --prod ......
how can I use NSubstitute for stub and mock? any difference about the usage?
how can I use NSubstitute for stub and mock? any difference about the usage? NSubstitute is a popular mocking library for .NET that allows you to crea ......
The value of the cell C1 should not be a string value.
Aspose.cells打开文件之后输出为DataTable，是将第一行作为数据类型判断，列具有混合数据集错误代码 var cells = workbook.Worksheets[0].Cells; var detailTable = cells.ExportDataTable(0, 0, cell ......
What's the role of Minipig animal models in drug development?
The development of various human diseases is highly complex. For drug developers to study human pathogenesis and pathological changes and observe and ... ......
java - idea编译输出缺失导致 The output path is not specified for module XXX - 解决
进入setting设置项，搜索 Java Compiler 添加项目模块后，设置jdk版本，然后确定即可 ......
The 2023 ICPC Asia Hong Kong Regional Programming Contest
The 2023 ICPC Asia Hong Kong Regional Programming Contest A. TreeScript 给你一个根，让你构造一棵树，每个节点被创造的时候必须知道它的父节点的地址和需要寄存器存放当前节点的地址，现在给定你每个节点之间的关系，并且现在根节点已经被创 ......
react+echarts出现“There is a chart instance already initialized on the dom.”
写了一个关于echatrs组件，报错dom重复 配置信息从props拿 let chart; useEffect(() => { if (chart) { updateChartView(); }else{ chart = echarts.init(dom.current) updateChartV ......
Codeforces Round 857 (Div. 2) C-The Very Beautiful Blanket
题目地址 题意：构造一个二维数组，使得任意一个4*4的子矩阵满足： A11⊕A12⊕A21⊕A22=A33⊕A34⊕A43⊕A44 A13⊕A14⊕A23⊕A24=A31⊕A32⊕A41⊕A42 Solution(思路来源：知乎xioachou) 对于4个数来说，任意一个二进制位上的1和0都为偶数， ......
【Python】Jupyter Notebook：IOPub message rate exceeded. The notebook server will temporarily stop sending output to the client in order to avoid crashing it..解决方案
✨报错提示 IOPub message rate exceeded. The notebook server will temporarily stop sending output to the client in order to avoid crashing it. To change thi ......
Logstash could not be started because there is already another instance using the configured data directory
#执行报错[root@logstash-95 ~]# logstash -f /etc/logstash/conf.d/stdin-test.conf Using bundled JDK: /usr/share/logstash/jdk OpenJDK 64-Bit Server VM warnin ......