In this article we learn about branch statement, loop statement and goto statement One: What is a statement? In the C language, a statement is a complete execution unit, which is used to express a certain operation or perform a specific task. A program in C language is composed of statements, and each statement is […]
for and do-while loops and break and continue statements
Table of Contents for loop grammatical form Loop execution flow chart Difference between for loop and while loop example do-while loop grammatical form Loop execution flow chart example break and continue statements The difference between break and continue in different loops while for do-while for loop Grammar form The for loop is the most used […]
(13) java String and Date, Calendar
Table of Contents 1. String 1.1 Introduction to the String object 1.2 Memory structure of String 1.3 String splicing 1.4 Commonly used methods 2. StringBuffer and StringBuilder 2.1 Introduction: 2.2 Commonly used methods 2.3 Differences 3. Traditional date and time handling 3.1 System class 3.2 Date 3.3 SimpleDateFormat 4.Calender 5. JDK new date API 5.1 […]
spring boot integrated rocketmq
Integrate Spring Boot and RocketMQ In modern microservice architectures, message queues have become a common asynchronous processing mode, which can solve problems such as synchronous calls between services, high coupling, and traffic peaks. RocketMQ is a messaging middleware open sourced by Alibaba. It has excellent performance and complete functions, and is widely used in various […]
[Linux multithreading] An example written based on the production and consumption model (with source code + explanation)
Production consumption model production consumption model Why use the producer consumer model Advantages of the producer-consumer model Producer consumer model based on BlockingQueue BlockQueue.cc the code explain BlockQueue.hpp the code explain Makefile the code explain Task.hpp the code explain Production consumption model Why use the producer consumer model The producer-consumer model uses a container to […]
Matlab programming practice 16, 17
Predator and prey model Population growth In the simplest model of population growth or decline, the rate of growth or decay is proportional to the number of the population itself. Increasing or decreasing the population size results in a proportional increase or decrease in the number of births and deaths. Mathematically, it can be described […]
Analyzing the performance of Elasticsearch based on Lucene query principle
Foreword Elasticsearch is a very popular distributed search system that provides very powerful and easy-to-use query and analysis capabilities, including full-text indexing, fuzzy query, multi-condition combination query, geographic location query, etc., and has certain analysis and aggregation capabilities. Because its query scenarios are very rich, it is very complicated to analyze its query performance in […]
STM32F1 is based on the standard library ST7735 1.8”LCD display DHT11 data
STM32 is based on the standard library ST7735 1.8”LCD display DHT11 data HAL library driver can refer to: “STM32 reads DHT11 data based on HAL project” display effect: ST7735 128×160 1.8” LCD screen Screen information and related drivers can refer to “1.8-inch TFT LCD128X160 ST7735S SPI serial port screen driver example” If the driver displays […]
Using Python to implement simulated annealing algorithm
Simulated annealing algorithm Flow chart of simulated annealing algorithm The initial temperature new temperature value enter the loop generate a new solution according to bound according to constraints Computes the target difference between the new solution and the current solution Judging whether to accept the solution Determine whether to update the solution end of loop […]