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全部文章（共162篇）

qt弹出对话框选择视频并播放

QString path = QFileDialog::getOpenFileName(this, tr("选择视频"), ".", tr("Image Files(*.mp4)"));//得到视频路径 mediaPlayer =...

2017-09-27

0 561

qt弹出对话框选择图片并显示

QString path = QFileDialog::getOpenFileName(this, tr("选择视频"), ".", tr("Image Files(*.jpg *.png)")); QImage* img=new ...

2017-09-26

0 509

html数据传到mysql简单例子

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>testmysql</title>...

2017-09-21

0 402

c读入文件，多个字符串，按字典序排序

#include<stdio.h> #include<stdlib.h> #include<string.h> int main(){ char s[100][100],c[100]={0}; FILE *fp; char l[100]={...

2017-09-21

0 401

HDU2717 Catch That Cow

Problem Description Farmer John has been informed of the location of a fugitive cow and wants to catch her immediately. He starts at a point N (0 ≤ N...

2017-08-30

0 383

POJ1372 Knight Moves

Problem Description A friend of you is doing research on the Traveling Knight Problem (TKP) where you are to find the shortest closed tour of knight ...

2017-08-28

0 490

HDU1548 A strange lift

Problem Description There is a strange lift.The lift can stop can at every floor as you want, and there is a number Ki(0 <= Ki <= N) on every f...

2017-08-28

0 446

POJ3984《迷宫问题》

题目描述定义一个二维数组： int maze[5][5] = { 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1, 0, }; 它表示一个迷宫，其中的1表示墙壁，0表示可以走的路，只...

2017-08-27

0 371

python爬取知乎回答

1. 安装库 htmlparser用来解析html。 Beautiful Soup 是一个可以从 HTML 或 XML 文件中提取数据的 Python 库。 pip install beautifulsoup4 Selenium 是浏览器自动化测试框架，使用它来模拟用户操作。利...

python

2017-08-25

0 577

登录验证

<?php $serverName = "localhost"; $username = "root"; $password = "123456"; $dataBase = "yunhu"; $conn = new...

2017-08-14

0 459