Minimum circle coverage problem Problem Description algorithm design Optimal substructure properties greedy selectivity code Problem description Original title link There are some ships on the sea that need to communicate with the land, and some base stations need to be deployed on the coastline. Now abstract the problem as, above the x-axis, give the coordinates […]
Tag: proof
51 microcontroller kitchen fireproof infrared combustible gas detection alarm LCD display design
1. Foreword In the past two years, the requirements and difficulty of graduation projects and graduation defenses have continued to increase. Traditional graduation projects lack innovation and highlights, and often fail to meet the requirements for graduation defenses. In the past two years, junior students and junior students have constantly told Senior Xiaohong to do […]
Brute force cracking [Verification code bypass, token blast-proof] shooting range experiment
Practical pre-statement The procedures (methods) involved in the article may be offensive and are only for security research and learning purposes. If readers use the information for other purposes, the user shall bear all legal and joint liability. The author of the article does not assume any legal and joint liability. 1. Introduction to BurpSuite […]
Computer competition python blockchain implementation – proof of work workload proof consensus algorithm
Article directory 0 Preface 1 Blockchain basics 1.1 Internal structure of Bitcoin 1.2 Implemented blockchain data structure 1.3 Points to note 1.4 The core of blockchain – workload proof algorithm 1.4.1 The Byzantine Generals Problem 1.4.2 Solutions 1.4.3 Code implementation 2 Quickly implement a blockchain 2.1 What is blockchain 2.2 What does a complete fast […]
Polygon zkEVM recursive proof technical documentation (5) – Appendix: Implementing proof composition with SNARKjs and PIL-STARK
Previous blogs include: Polygon zkEVM recursive proof technical documentation (1) [mainly describes the combination, recursion and aggregation of related tools and proofs] Polygon zkEVM recursive proof technical documentation (2) – Polygon zkEVM architecture design Polygon zkEVM recursive proof technical documentation (3) – code compilation and operation Polygon zkEVM recursive proof technical documentation (4)–C12 PIL Description […]
How to use python for text proofreading, python shortcut keys for adjusting alignment
Hello everyone, the editor is here to answer the following questions for you, how to use python to proofread text, and the shortcut keys for adjusting alignment in python. Now let us take a look! Use Python to process Word files Install the external module python-docx pip install python-docx 1. View Word file structure from […]
Springboot+kafka+elk foolproof installation
Using dokcer-compose installation 1. Install elk + kafka Note that you need to create several files because they need to be mounted #File to be created D:\docker\elasticsearch\data D:\docker\elasticsearch\logs d:\docker\elasticsearch\plugins d:\docker\logstash\pipeline/logstash.conf version: ‘3.7’ services: elasticsearch: image: elasticsearch:7.6.2 container_name: elasticsearch privileged: true user: root environment: #Set the cluster name to elasticsearch – cluster.name=elasticsearch #Start in single node […]
A blow to the soul from jackson: Can ControllerAdvice be foolproof?
ControllerAdvice global exception capture Here is a brief introduction, friends who dislike long-winded words can skip it directly and skip to Part 2. In the Spring family, global exception handling can be enabled by annotating @ControllerAdvice or @RestControllerAdvice. Using this annotation indicates that the capture of global exceptions is enabled. We only need to use […]
P02114200 Qi Qi, P02114213 Yang Jiaru, P02114193 Wei Ziang, P02114105 Jiang Qi, P02114208 Gu Zihao–Research and Expansion of the Proof of Additivity and Incrementality of Information Entropy
Directory 1. Preliminary knowledge 2. Proof process 2.1. Proof of information entropy additivity 2.2. Proof of increasing information entropy 3. Expansion 3.1 Extension of Additivity 3.2 Incremental expansion 3.3 Information grains and decision trees 3.3.1. Information Granules 3.3.2. Information entropy and information granularity 3.3.3. Decision tree 3.3. 4. Information granule and decision tree 3.3.5. Conclusion […]
MyBatisPlus data automatic encryption and decryption access and field tamper-proof validity check code automatic generation storage processor
The overall principle: use the Mybatis interceptor to intercept ResultSetHandler, and perform attribute decryption and integrity proofreading. Replace the default ParameterHandler handler. Do attribute encrypted storage and integrity encrypted storage. The code structure is as follows: Explanation of each function class: 1. EntityClassResolver: used to resolve the Entity parameters of the current MapperStatament. 2. EntityValueHelper: […]