Hello, I’m Yui. Foreword Speaking of linked lists, we talked about singly linked lists before, but there are more than one types of linked lists, if you want to classify them. Linked lists can be divided into headed or non-headed, one-way or two-way, cyclic or non-cyclic, which means that there should be a total of […]
Tag: irc
Spring-Spring’s circular dependency source code analysis
What is circular dependency? It’s very simple, that is, object A depends on object B, and object B depends on object A. for example: //A depends on B class A{ public B b; } // B depends on A class B{ public A a; } So are circular dependencies a problem? If you don’t consider […]
06-Solving circular dependency issues in Spirng
Bean circular dependency problem Circular dependency: A object has B attribute, and B object has A attribute (the husband class Husband has a reference to Wife, and the wife class Wife has a reference to Husband) When the toString() method is overridden and directly outputs wife/husband, a stack memory overflow error caused by recursion will […]
Greedy Proof | Least Circle Covering Problem
Minimum circle coverage problem Problem Description algorithm design Optimal substructure properties greedy selectivity code Problem description Original title link There are some ships on the sea that need to communicate with the land, and some base stations need to be deployed on the coastline. Now abstract the problem as, above the x-axis, give the coordinates […]
Data structure linear list – headed two-way circular linked list
Preface: It’s been a long time, friends. In the last article, we studied the singly linked list, one of the data structures, linear tables, and learned many benefits of the singly linked list. However, it is impossible to have a perfect data structure, even if it is a singly linked list. There will be many […]
c language-data structure-led two-way circular linked list
Table of Contents 1. The structure of a two-way circular linked list 2. Creation of the structure of a two-way circular linked list 3. Initialization of two-way circular linked list 3.1 Printing of doubly linked list 4. Head plug of two-way circular linked list 5. Tail insertion of two-way circular linked list 6. Deletion of […]
Use stacks to implement queues, use queues to implement stacks and circular queues
1. Use stack to implement queue Design idea: Create two stacks, one is the enqueuing stack and the other is the dequeuing stack. When it is necessary to enter the queue, it is inserted to the end of the queue stack. When it is necessary to dequeue, it is necessary to determine whether the queue […]
Graph theory 10-Hamiltonian circuit and Hamiltonian path + state compression + memory search
Article directory 1 Hamiltonian circuit 2 Implementation of Hamiltonian cycle algorithm 2.1 Conventional backtracking algorithm 2.2 Introduce variables to record the number of remaining unvisited nodes 3 Hamiltonian path problem 4 state compression 4.1 Check whether the i-th bit is 1 4.2 Set the i-th bit to 1 or 0 4.3 Summary 4.4 Application of […]
Spring circular dependency solution
Foreword: A BeanCurrentlyInCreationException occurred in the test environment, causing the backend service to fail to start. At first glance, it was a circular dependency in Spring’s bean management. There are circular dependencies of beans in the project, which is a sign of low code quality. Most people hope that the framework layer will wipe their […]
Identification Example: Least Squares Method to Fit the Standard Equation of a Circle
Identification example: least squares method to fit the standard equation of a circle The following uses the equation of a fitting circle to demonstrate an example of second-order least squares identification. It is known that the general formula of a circle is ( x ? a ) 2 + ( y ? b ) 2 […]