Educational Codeforces Round 121 (Rated for Div. 2)A-C problem solution

Blog home page: https://blog.csdn.net/qq_50285142Welcome to praise 👍 Collection ⭐ , attention ❤ Leaving a message. 📝 Please correct any errors 🎈 Click to receive a large number of learning resources 🎈 A. Equidistant Letters A string that requires equal distances between the same letters and rearranges them Find the same letters, arr ...

Posted by mooshuligan on Sat, 22 Jan 2022 12:52:07 +0100

Python Daily Note punch in_ day4

Day 4 Tuesday, January 18, 2022 - basic method of ordered sequence I Addition of list elements append() method -- the new elements of this method are added at the end of the list List name Append (new data) Chestnuts: >>> name = ['Xia Xia','Yaqi'] >>> name.append("like") >>> print(name) ['Xia Xia', 'Yaqi', 'l ...

Posted by wcl99 on Sat, 22 Jan 2022 10:43:51 +0100

Simple Scheduled Task List SSM project completed in 40 minutes - Quick one-article integration of small Demo built by SSM framework - Github address included

📑 Content of this article: SSM framework to build a simple list of planned tasks project - project reality 📘 Article Column: SSM Getting Started to the Tomb - One-stop Foundation and Advanced Columns 🎬 Latest update: January 20, 2022 SpringMVC Getting Started to Tomb One-stop Foundation and Advancement - Including Interview Points and Beginnin ...

Posted by valerie19 on Sat, 22 Jan 2022 10:38:27 +0100

Day 13 common class String

Scanner: By observing the API, it is found that the methods in this class are not modified by static, so to create an object to call, and create an object, we need to learn its construction method. Construction method: public Scanner(InputStream source) constructs a new Scanner, Generates a value scanned from the specified input stream. Th ...

Posted by livepjam on Sat, 22 Jan 2022 10:24:42 +0100

Java - multithreading notes

Basic concepts of operating system (Master) example: The program keeps outputting a greeting on the screen(Like "hello") "At the same time, when I input fixed input through the keyboard, the program stops outputting greetings to the screen(For example, input gun) Single thread package com.cskaoyan._01introduction; import java.ut ...

Posted by kaveman50 on Sat, 22 Jan 2022 09:02:14 +0100

Java uses thumbnail to gracefully handle images -- image transcoding and thumbnail generation

"This is the fourth day of my participation in 2022's first update challenge. See the activity details: 2022 first update challenge」. Article introduction Sometimes, our project needs to generate small thumbnails for business images or transcode the image format. What method will you use? Directly use object storage and hand over bu ...

Posted by nishmgopal on Sat, 22 Jan 2022 08:58:20 +0100

Analysis of ReentrantLock source code for Java concurrency

Analysis of ReentrantLock source code for Java concurrency Condition In the previous chapter, we learned about the use of condition. Let's take a look at the implementation of condition juc. Condition under juc is essentially an interface, which only defines the use mode of this interface, and the specific implementation is actually completed ...

Posted by mblack0508 on Sat, 22 Jan 2022 08:45:31 +0100

[C + +] [problem solution] performance ranking

subject Title Description The new year is coming! As a CEO with n employees, it's time for you to rank the employees' performance annually. Through the indicators of n employees this year (skill p, communication r, cooperation s, project t), Calculate the annual performance of each employee, and output everyone's name from high to low. Per ...

Posted by phpnewbiy on Sat, 22 Jan 2022 07:50:35 +0100

modern_cpp_3-C++ Basic Syntax

Slides of structure 2: Modern C++ for Computer Vision Lecture 2: C++ Basic Syntax (uni-bonn.de) This part mainly introduces the keywords, entities, entity declarations and definitions, types, variables, naming rules of identifiers, expressions, if else structures, switch structures, while loops, for loops, arithmetic expressions, condition ...

Posted by aswini_1978 on Sat, 22 Jan 2022 06:45:58 +0100

Yunyan [ctf experiment]

Bored casually did a few questions catalogue contradiction It's no use being single for a hundred years Hand speed of being single for 20 years ereg  intval contradiction <?php $num=$_GET['num']; if(!is_numeric($num)) { echo $num; if($num==1) echo 'flag{**********}'; } ?> If you normally give a string of code, you will feel a co ...

Posted by bskauge on Sat, 22 Jan 2022 06:39:11 +0100