Programmer Group

Day93: loop invariants of sorting algorithm ＜ insert, select, bubble ＞ Divide and conquer strategy Divide And Conquer: resolve a big problem into countless same small problems for solution, that is, the use of recursion. Sorted divide and conquer strategy: Continuously split set A into the same small set, and finally return to the soluti ...

WPF supports not only traditional program level resources, but also unique object level resources. Each interface element can have its own resources and be shared by child elements. With some simple examples, this paper briefly describes the relevant usage of resources in WPF, which is only for learning and sharing. If there are deficiencies, p ...

Objectives: 1. List 2. Tuple 3. Dictionary 4. String 5. Public method 6. Advanced variable In python, all non numeric variables have the following characteristics: ① Is a sequence, which can also be understood as a container ② Value [] ③ Traverse for in ④ Calculation length, Max / min value, comparison, deletion ⑤ Connect + and repeat* ⑥ Slice ...

Exercise 7-8 The square matrix moves to the right. Read in two positive integers m and n (1 ≤ n ≤ 6), then read in the n-order square matrix a, and move each element in the square matrix to the right by m positions, that is, columns 0, 1,..., n-1 are transposed into columns N-M, n-m+1,..., n-1, 0, 1,..., n-m-1. The moved square matrix ca ...

Continuous learning & continuous updating Learning attitude: keep breaking away introduction There are many places in Servlet and JSP that need to use the path. Many beginners don't know it very well. In order to facilitate themselves and others, write an article to discuss it and attract jade. This article will be continu ...

summary on must be used with join SQL1 finds all the information of the latest employee select*from employees order by hire_date desc limit 1; select * from employees where hire_date = (select max(hire_date) from employees); ORDER BY sorts the result set according to the specified column. By default, ORDER BY DESC is in ascending ...

2021SC@SDUSC Source code download address: https://gitee.com/zeusees/HyperLPR See the first analysis for details of source code configuration   The content of this article will continue to be analyzed according to the tasks assigned by the group, as follows: 1, bitwise_not(...)           For al ...

1. Camera model Pinhole camera model: the light passing through a specific point in space can pass through the pinhole (pinhole aperture). These beams are projected onto the image plane to form an image. Put the image plane in front of the pinhole and reorganize the pinhole camera model into another equivalent form, In fact, the center of the ...

   when using python to process data, sometimes large data sets may be encountered, and the problem of Memory Error may occur. After my attempt, I summarize the following schemes: 1. Modify the length of data type   modify the length of the data type to compress the data in memory, so as to reduce the occupation of memory. imp ...

preface: In the previous article, we learned about the service invocation mode of Dapr. In this article, we continue to learn about state management. 1, Status management - problems solved Tracking status in distributed applications has the following problems: Applications may require different types of data storage. Different levels of consis ...