Quickly understand the content of BIO and NIO threads in Java. It's enough to read this article
In this article, I want to complete the basic notes of the network programming model supported by Java, so that I and you can understand the I/O mode of network programming supported by Java.
Introduction (small stove)
Speaking of network programming, let's first understand the I/O modes of network programming supported by Java: BIO, NIO, and ...
Posted by richblend on Fri, 05 Nov 2021 15:16:24 -0700
Image theme color extraction algorithm
Median segmentation
In RGB color space, the three primary colors R, G and B correspond to three coordinate axes of the space, and each coordinate axis is quantized to 0-255. 0 corresponds to all black and 255 corresponds to all white. In this way, a color cube with 256 sides is formed, and all possible colors correspond to a point on the c ...
Posted by Mark.P.W on Fri, 05 Nov 2021 14:47:49 -0700
Cf17e palisation problem solution
Description
Luogu portal
Solution
A very interesting question.
When you see the palindrome substring, you first think of the manacher algorithm. emm... But what to do after writing manacher?
We find that finding intersecting palindrome substrings is very troublesome, so the direct wave is positive and difficult, and the disjoint is subtracted ...
Posted by Bjblatz on Fri, 05 Nov 2021 14:45:46 -0700
Web API learning notes day05, 06, 07
1.offset series
Offset, offset, can only be obtained and cannot be changed
offsetTop: returns the offset (Y-axis size) of the element above the parent element with positioning. If not, it is the distance to the bodyoffsetLeft: returns the offset (Y-axis size) of the element from the left border of the positioned parent element. If not, it is ...
Posted by zorgon on Fri, 05 Nov 2021 14:43:09 -0700
Java Se and objects
As we all know, C language is process oriented. It focuses on the process of the problem, analyzes the steps of solving the problem, and gradually solves the problem through function call. Java is based on object-oriented, which focuses on objects, that is, the main body involved in completing a thing, splitting a th ...
Posted by Jessup on Fri, 05 Nov 2021 14:39:08 -0700
Font reading and display of dot matrix Chinese characters
1, Chinese character dot matrix library
1. Chinese character coding
1.1 location code
It is stipulated in the national standard GD2312-80 that all national standard Chinese characters and symbols are allocated in a square matrix with 94 rows and 94 columnsEach row of the square array is called a "zone"Each column is called a ...
Posted by quizzical on Fri, 05 Nov 2021 13:49:39 -0700
Chapter III summary
3.1 cited examples
[example 3.1] calculate the Celsius temperature corresponding to the Fahrenheit temperature of 100 ° F. Calculation formula:
c=
Where: represents the temperature in Celsius and f represents the temperature in Fahrenheit.
#include<stdio.h>
int main(void)
{
/*Define 2 integer variables. ...
Posted by olivarespablo on Fri, 05 Nov 2021 13:47:32 -0700
Dynamic memory management (heap)
catalogue
Why is there dynamic memory management
How to manage space?
Introduction to dynamic memory functions
malloc and free
calloc
realloc
Common dynamic memory errors
Written test questions
Flexible array
Use of flexible arrays
Advantages of flexible arrays
Why is there dynamic memory management
1. You can a ...
Posted by seaten on Fri, 05 Nov 2021 13:30:55 -0700
Database Experiment 3: basic SQL operation of database
(31) create a view of information department student information
create view IS_Student
as
select *
from student
where sdept = 'IS';
(32) query students younger than 20 years old in the student view of the information department
select *
from IS_Student
where Sage < 20;
(33) delete all course selection records of Ma Chaoyang
delete
f ...
Posted by buceta on Fri, 05 Nov 2021 13:18:46 -0700
Data structure -- queue
Article catalog
Article catalog
1, What is the queue?
2, Code implementation
1. Storage structure
2. Common interface functions
2.1 initialization and destruction
2.2 insertion and ejection
2.3 other interfaces
summary
1, What is the queue?
Queue is also a linear table with the characteristic of ...
Posted by mclordgt on Fri, 05 Nov 2021 13:05:42 -0700