Programmer Group

Shell language This problem uses command line + bat (windows batch file) to realize query. There are two main methods. The first is to use dir command and find command to count the number of various types of files in a specific directory; The second is to use the for statement to traverse and count the files in a specific directory, as follows: ...

Pay attention to one button three times (don't be sure next time) Hello, bald men, let's learn the pointer together today! Key points of this chapter What is the pointerPointer and pointer typeField pointerPointer operationPointers and arraysSecondary pointerPointer array What is the pointer? In computer science, a Pointer is a ...

The so-called greedy algorithm is to ensure that each operation is a local optimal solution, so that the final result is a global optimal solution. Exercise 1:455. Distribute cookies The key to using greedy algorithm is to find greedy strategy, that is, each operation is a local optimal solution. As can be seen from the question, to satisf ...

Stacks and queues are linear tables that restrict the insertion and deletion of total equity changes at the end of the table Stack -- last in first out         Stack algorithms must be used: number system matching, expression evaluation, bracket matching detection, eight queens problem, line editing program, function ca ...

catalogue Object calling function and this pointer (supplemented by this pointer) const supplement const decorated data member (initializing member list) Modify member functions (data members will not be modified in member functions) Decorated object static supplement Modified out of class Modify global variables Modify local variables ...

1, Documents What is a file: Files on disk are files 1. Classified by file function: Procedure documents: Source program file test.c object file test.obj executable program test.exe Data file: The content of the file is not necessarily the program, but the data read and written when the program runs, such as the file from which the ...

When writing the structure of LED lamp, you need to set the clock of GPIO port, input and output mode and high and low levels of GPIO pin. Next, we will introduce how to configure each structure Introduction to GPIO General purpose input / output is referred to as GPIO for short. STM32F103VET6 has 80 gpios in total. These IO pins are divided i ...

        There are many unit testing frameworks, and it is convenient for ubuntu to use gtest. The window s platform is mainly developed using vs2017. I use VS to develop qt projects. Although there are many fewer unit testing configurations with VS, I still need to import. props files. During testing, I need to change the a ...

brief introduction Super resolution refers to the process of enlarging or improving image details. When increasing the size of the image, additional pixels need to be interpolated in some way. Traditional image processing techniques can not get good results because they do not take the surrounding environment as the background when zooming in. ...

Novice way out, please consult!! Definition of linear table: linear list is the most basic, simplest and most commonly used data structure. Linear table data elements The relationship between is a one-to-one relationship, that is, except for the first and last data elements, other data elements are connected head to tail, but this only applie ...