Complexity of quick sorting algorithm for conditional expectation solution

1 Conditional expectation definition 1（ Conditional expectation ）： Given random variable XXX and YYY, The following conditions are expected E[X]=E...
2022-01-24 10:55 views 19

SQL injection

0. PHPStorm Code debugging method plus &XDEBUG_SESSION_START=PHPSTORM that will do 1. Premise of joint query injection : There are advantages ...
2022-01-21 18:55 views 42

query mysql Qualified table names in the database and modify the types of fields in the table

At work today, the leader raised a question for me to modify the type and comments of the field in a type of table in the database. First of all, ...
2022-01-21 18:09 views 14

Game AI —— Gathering and obstacle avoidance

Experiment 2 ： Gathering and obstacle avoidance , The purpose of the experiment is to master the artificial intelligence algorithm of aggregation ...
2022-01-21 17:35 views 53

JDBC Six steps of programming 123456

import com.mysql.jdbc.Driver;import java.sql.Connection;import java.sql.DriverManager;import java.sql.SQLException;import java.sql.Statement;public...
2022-01-21 14:56 views 33

Mysql Get the latest record

because mysql5.7 Window functions are not supported , So we can't pass the similar oracle and sql server And other databases are implemented throu...
2022-01-21 14:05 views 31

Pandas Brief description of

Pandas（ Data analysis and processing library ） Import library import pandas as pd（pandas There are two main data structures ：dataframe,series.s...
2022-01-20 23:39 views 19

C Practice your language every day 2： Yanghui triangle

Yanghui triangle
2022-01-19 20:30 views 39

539. Minimum time difference

Given a 24 Hour system （ hour : minute “HH:MM”） Time list of , Find the minimum time difference between any two times in the list and express i...
2022-01-18 23:59 views 40

Java Design and implementation of mine sweeping game

This game has a long history , Since mine sweeping was developed, it has been optimized countless times , This game is becoming more and more popu...
2022-01-18 19:06 views 71
Technology
Daily Recommendation
ioDraw Mac Client Installation Tutorial
views 10
©2020-2024 ioDraw All rights reserved, Privacy Policy