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Development without writing tests is not a good programmer. I personally advocate TDD (Test Driven Development), but unf...
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Search Binary Tree Search for a binary tree: For any node searching for a binary tree, the value of the left subtree is ...
Solution to the problem of expanding the character string of Luogu P1098
Title Description In the question of "reading program writing results" in the popularity group of the prelimin...
Beauty of Interval K Large Number Query
Problem: In an unordered sequence, find the K-th largest number in a given interval Method 1: Sort first, then find the ...
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Vector is part of the C + + standard template library, which is occasionally translated as "container" in Chin...
vue uses swiper rotation chart
The realization and principle explanation of simple carousel chart swiper.vue <template> <div id="hy-swi...
Important points and examples of select function and group multi table connection in Oracle
Key points of select function and group multi table connection in Oracle function
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Common development knowledge points of ES6: Introduction
ES6 introduction
ES6, full name ECMAScript 6....
Implementation of Paging in SpringBoot Blog System
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In blog article list pages an...
Find - binary sort tree (find, insert, delete)
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In order to maintain the order of t...
C++ Implements Neural Network from Zero
Long text warning: a total of 22727 words
Note: All sourc...
Implementation of dijkstra algorithm (743, 787) for priority queue of shortest path problem in leetcode graph
743 network delay time Topic Description: there are N network nodes, marked as 1 to N. Given a list of times, it indicat...
JavaScript self study notes: using JS to realize floating window of web page
Recently, I made a small project to add a floating window to the web page, which tested the basic CSS and JS technology....
COW (Copy On Write) in GCC
Article directory What is COW? Copy Elision Realization Possible implementation The implementation of libstdc + + What's the problem? What is th...
Take a look at LockSupport and AQS
This time, we can see the principle of lock in concurrency. We will talk about AQS, ReentrantLock, ReentrantReadWriteLock and the newly added StampedL...
Go language learning, structure
Recently, the epidemic situation is quite serious, and you can't go out for the new year. If you have nothing to do, continue to update your blo...
Introduction to u attribute_u keyword of gcc
Introduction to the _attribute_keyword of gcc See: https://gcc.gnu.org/onlinedocs/gcc-4.0.0/gcc/Variable-Attributes.html#Variable-Attributes https://...
Python 3 conditional control, loop statement
Article directory if statement while Loop Infinite cycle while loop use else statement Simple statement group for statement Use break in for statemen...
jQuery -- small rocket back to top case
Small rocket back to top case 1. Scroll the page. When the distance between the page and the top exceeds 1000px, the small rocket will be displayed. E...
Common functions in MySQL
1. String function length(a) gets the length of string a concat(a,b,c) splices multiple values into a string trim(a) remove the space at the beginnin...
Spark.ml -- Naive Bayes
Preface Naive Bayes classifier is a classifier with low variance and high deviation. It assumes that there is conditional independence between each f...
js basic functions
1. Array API of javascript: //Defined array var pageIds = new Array(); pageIds.push('A'); //Array length pageIds.length; //shift: Delete th...
Data structure (C language) course 5: drug sales statistics system of drugstores
Data structure (C language) course 5: drug sales statistics system of drugstores Title Description: You work as a warehouse keeper in an L drug store...
Implementation principle of ArrayList (JDK 1.8)
Implementation principle of ArrayList (JDK 1.8) public class ArrayList<E> extends AbstractList<E> implements List<E>, RandomAccess, ...
Filter query of hbase
There are many filters for hbase: they can be roughly divided into two categories: comparison filter and special filter. The function of filter is to...
20190108 use of recursive function to realize the use of basic recursive functions such as finding the greatest common divisor
1. Given a = [1,2,[3,4,[5,6,7,[8,9,[10,11]]]], print output is required: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 Use the recursive function to traverse A. w...
Get the K-th largest element in an array
How to get an array in O(n) such as which has the largest K element? We can use the partition method similar to fast row to limit the K-th largest el...