Programmer Group

1. Judgment Subsequence ( leetcode392) The idea is that we can use violence directly for pattern matching, but if we use violence directly in addition to the kmp algorithm, we do not need to use backtracking, because it is not a continuous substring, but a subsequence, as long as we find the s characters in t and the order is the same, we c ...

  Cause: HTTP API usage of EMQ X Basic authentication (opens new window) Using the HTTP API of EMQ X Basic authentication (opens new window) Method, id and password must be filled in AppID and AppSecret respectively. The default AppID and AppSecret are admin/public. You can modify and add AppID/AppSecret by selecting "management&quot ...

1, Basic command line operations mysql -u username - p password   ；--- Connect to database flush privileges ；   Refresh permissions show databases ； --- View all databases mysql > use   Database name--- Switch database mysql> show   tables ；--- Displays information for all tables in the database MySQL > ...

prefaceIn the previous article, I wrote about custom events in Vue. Custom events are the basis of the global event bus. I buried a small foreshadowing in my last article. As shown below:As I said, in Vue, if we use (@ ORV on) to bind a custom event to the component, its essence is to bind an event to the child component VueComponent, that is, ...

1. Force buckle C + + source code class Solution { public: int lengthOfLongestSubstring(string s) { map<char, int> hash; int ans = 0; int i = 0; int n = s.length(); for (int j = 0; j < n; j++) { if (hash.find(s[j]) != hash.end()) { i = max(hash.find(s[j])-> ...

  Video link: The final collection of PyTorch deep learning practice_ Beep beep beep_ bilibili This secondary implementation is a more complex neural network. Although the model looks very complex, in order to reduce code redundancy and improve code reusability, we can define the neural network with the same structure as a class to improv ...

MyBatis If there is a problem, switch the version: jdk:1.8mysql:5.1.47maven 3.6.1IDEA brief introduction What is MyBatis MyBatis is an excellent persistence layer framework, which supports custom SQL, stored procedures and advanced mapping. MyBatis eliminates almost all JDBC code and the work of setting parameters and obtaining result ...

What is the fast power of a matrix? Fast power is a fast method to solve the power of a number by using binary. The principle of fast power will be briefly explained later. If you still don't understand it, please Baidu yourself. I believe that many young friends are new to college and may not have studied linear algebra (such as me), so ...

DAY ONE - PM There are two ways to modify the container configuration file: Log in to DOCKER and modify the corresponding configuration file [root@controller0 ~] docker exec -it keystone bash ()[root@controller0 /] vi /etc/keystone/keystone.conf Log in to controller0 to modify the configuration of container mapping. The following directo ...

1, Abnormal Exceptions in python are implemented through classes. All exception classes inherit from the base class BaseException, which can be divided into four categories as follows: If the exception in the program is not handled, the exception will be passed to the upper level by default, which is the delivery of the exception. If the ...