Some are official explanations or better ideas of others, and some are written by themselves. Prepare to brush questions while sorting out, only as your own study notes!
JZ1. Search of two-dimensional array
Title Description In a two-dimensional array (each one-dimensional array has the same length), each row is sorted in asc ...
1, Define my_string class
using namespace std;
char* _ptr; //character string
size_t _size; //Number of valid characters
size_t _capacity; //capacity
static size_t npos; //size_ Maximum number in type T (indicates - 1) ...
Posted by David-fethiye on Sun, 08 May 2022 06:12:56 +0300
Main idea of the title:
Given a tree and the weight of each node, find the path from all root nodes to leaf nodes, so that the sum of the weight on each path is equal to the given constant S. if there are multiple paths, output according to the non increasing sequence of paths
Considering the traversal of the tree, since it is n ...
Posted by laurton on Sat, 07 May 2022 14:01:39 +0300
There are four dac chips, two ad5762 and two ad5764 on an analog board. Finally, the hardware spi of mcu is used for daisy chain communication. It can be seen that after the spi sdo of mcu enters the sdin of u29 ad5762, the sdo of u29 ad5762 enters the sdi of u57 ad5762, and so on. Finally, from the sdo of u69 ad5764 into the sdin of mcu, a ...
Posted by markl999 on Thu, 05 May 2022 10:08:13 +0300
Oj599: sum of two numbers 1
Given an array from small to large and a target number t, find two numbers in it, make the sum of the two numbers equal to the target number, and output the position of the two numbers in the array.
The first line contains two integers n,t. (1≤n≤1000000,1≤t≤20000000)
The num ...
Posted by dearmoawiz on Wed, 04 May 2022 17:56:02 +0300
Implementation of simple calculator in computer software technology practice
Learn the design of graphical interface, use MFC application (Java swing or QT framework, or C#) to create dialog based application, and add buttons, edit boxes and other controls;
It can input and realize simple arithmetic operation through the d ...
1. Programming ideas in c + + (1) Object oriented programming (2) Generic programming: it mainly uses technical templates for programming 2. Template (1) Characteristics ① It can't be used directly. It's just a framework ② The universality of templates is not omnipotent, that is, a template is not used in all occasions (2) Function template ① T ...
Posted by cbassett03 on Wed, 04 May 2022 06:45:49 +0300
7-4 Professional Ability Test (30 points)
Professional Ability Test (PAT) consists of several series of subject tests. Each test is divided into several levels. Level A is a prerequisite of Level B if one must pass Level A with a score no less than S in order to be qualified to take Level B. At the mean time, one who passes Level A with a scor ...
Posted by CodeEye on Wed, 04 May 2022 05:57:26 +0300
When running executable programs under Linux, it is generally necessary to take specific parameters to specify the operation mode. The passed in parameter content is parsed by using getopt() function, and its header file is < unistd h>.
Let's introduce the prototype of getopt in detail:
int getopt(int argc,char * const argv[ ],const ch ...
Posted by alex57 on Tue, 03 May 2022 19:26:41 +0300
7-1 Panda and PP Milk (20 points)
PP milk is Pandas' favorite. They would line up to enjoy it as show in the picture. On the other hand, they could drink in peace only if they believe that the amount of PP milk is fairly distributed, that is, fatter panda can have more milk, and the ones with equal weight may have the same amount. Since they ...
Posted by mallen on Tue, 03 May 2022 19:00:45 +0300