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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Custom Font Example</title> <style> /* 使用@font-face规则定义字体 */ @font-face { font-family: 'AkalTun'; /* 定义一个字体名 */ src: url('https://akaltun.cn/1/akaltun.ttf') format('truetype'); /* 指定字体文件和格式 */ } /* 应用自定义字体到body，也可以应用到其他元素 */ body { font-family: 'AkalTun', sans-serif; /* 将字体应用到body，如果字体加载失败则回退到sans-serif */ } </style> </head> <body> <div id="container"> <h1>欢迎来到我的网站ئۇيغۇرچە</h1> <p>这里是使用自定义字体的文本。</p> <!-- 其他内容 --> </div> </body> </html>
Mysql外链约束规则
java的mvc三层架构分别是： View(界面层),Service(业务逻辑层),DAO(数据访问层) V：View 网页视图，为用户提供能够看到并且使用的界面，与用户直接进行交互。 M：Model，业务模型，处理业务 C：Controller，控制器，处理请求，调用模型和视图 dao层负责对数据进行直接操控，最底层 service层负责对传递过来的参数验证，以及其他逻辑验证操作。验证完毕访问dao层进行数据操控 servlet层负责接收参数，然后调用service层进行处理 三个层分工合作，有利于后期的功能维护，那层出了问题就去处理哪层
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <style> * { padding: 0; margin: 0; } li { list-style-type: none; } a { text-decoration: none; } .nav-box { width: 980px; height: 90px; margin: 20px auto; display: flex; align-items: center; } .right { flex: 1; margin-left: 20px; } .right-top-tag li { display: inline-block; font-size: 12px; border-radius: 3px 3px 0 0; overflow: hidden; } .right-top-tag li a { color: #666; padding: 5px 15px; display: inline-block; } .right-search { margin-top: -4px; display: flex; } .right-search input { border: 3px solid #F37B03; width: 100%; height: 27px; background: url("./images/tb/search.jpg") no-repeat 10px; flex: 1; outline: none; padding-left: 30px; color: #666; } .right-search .button { flex-shrink: 1; width: 133px; height: 33px; background: url("images/tb/button.jpg") no-repeat; border: none; } .right-search .tip { height: 33px; } .right-search .tip p { line-height: 16px; font-size: 12px; margin-left: 10px; color: #666; } .right-title-nav ul li { display: inline-block; margin-top: 6px; } .right-title-nav ul li a { color: #555; font-size: 12px; margin-right: 12px; } </style> </head> <body> <div class="nav-box"> <div class="left"> <img src="./images/tb/logo.jpg" alt=""> </div> <div class="right"> <div class="right-top-tag"> <ul> <li style="background-color: #F37B03;"><a style="color: #fff;" href="#"> 宝贝 </a></li> <li><a href="#"> 天猫<span style="color: #f79a3d;">(淘宝商城)</span> </a></li> <li><a href="#"> 店铺 </a></li> </ul> </div> <div class="right-search"> <input type="text"> <button class="button"></button> <div class="tip"> <p>高级搜索</p> <p>使用帮助</p> </div> </div> <div class="right-title-nav"> <ul> <li> <a href="#">长裙</a> </li> <li> <a href="#">时尚包包</a> </li> <li> <a href="#">新款连衣裙</a> </li> <li> <a href="#">中老年夏服</a> </li> <li> <a href="#">新款连衣裙</a> </li> <li> <a href="#">中老年夏服</a> </li> <li> <a href="#">更多>></a> </li> </ul> </div> </div> </div> </body> </html>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>Document</title> <style> * { padding: 0; margin: 0; } div { box-sizing: border-box; color: #DE8786; } .mainbox { width: 980px; margin: 0 auto; } .nav { background-color: #FE9AB5; } .nav .item { display: inline-block; line-height: 46px; padding: 0 30px; color: #fff; } .banner { text-align: center; } .frombox { background: url("./images/content_bg.jpg"); padding: 0 180px; } .step { padding: 10px 0; } .step .tip { font-size: 20px; line-height: 42px; float: left; } .userinfo .title { border-bottom: 1px solid #FE9AB5; line-height: 42px; margin-bottom: 10px; } input { border: 1px solid #FE9AB5; } .tableinput { padding: 5px 30px; } .tableinput tr { margin: 10px 0; } .tableinput .info { width: 220px; height: 22px; } .tableinput tr .titles { text-align: right; } .tableinput select { width: 168px; border-color: #FE9AB5; color: #FE9AB5; } </style> </head> <body> <div class="content"> <div class="logo mainbox"> <img src="./images/logo.jpg" alt=""> </div> <div class="nav"> <ul class="mainbox"> <li class="item">首页</li> <li class="item">会员</li> <li class="item">活动</li> <li class="item">直播</li> <li class="item">视频</li> <li class="item" style="background-color: #FE9AB5;">注册</li> </ul> </div> <div class="banner"> <img src="./images/banner.jpg" alt=""> </div> <div class="frombox mainbox"> <div class="step"> <span class="tip">注册步骤：</span> <img src="./images/step.jpg" alt=""> </div> <div class="userinfo"> <p class="title">您的账号信息：</p> <table class="tableinput"> <tr> <td class="titles">注册方式：</td> <td><input type="radio"> E-main注册 <input type="radio"> 手机号码注册</td> </tr> <tr> <td>注册邮箱：</td> <td><input class="info" type="email"></td> </tr> <tr> <td class="titles">注册手机：</td> <td><input class="info" type="email"></td> </tr> <tr> <td class="titles">登录密码：</td> <td><input class="info" type="email"></td> </tr> <tr> <td class="titles">昵称：</td> <td><input class="info" type="email"></td> </tr> </table> </div> <div class="userinfo"> <p class="title">您的个人信息：</p> <table class="tableinput"> <tr> <td class="titles">性别：</td> <td><input type="radio"> 男 <input type="radio"> 女</td> </tr> <tr> <td class="titles">学历：</td> <td><select> <option value="初中">初中</option> <option value="高中">高中</option> <option value="大专">大专</option> <option value="本科">本科</option> </select></td> </tr> <tr> <td class="titles">所在城市：</td> <td><select> <option value="北京">北京</option> <option value="江西">江西</option> <option value="四川">四川</option> </select></td> </tr> </table> </div> </div> </div> </body> </html>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>Document</title> <style> body { background-color: #EBEBEB; } .content { background: url("images/form_bg.jpg"); width: 1430px; height: 717px; margin: 0 auto; position: relative; } .frombox { width: 700px; height: 540px; position: absolute; top: 160px; left: 700px; } .title { text-align: center; font-size: 24px; } .line { padding: 7px 0; font-size: 15px; } .line input { height: 26px; width: 220px; } .line .tip { text-align: right; display: inline-block; width: 90px; } .line.color input { width: 120px; } .line.btn input { background-color: #93B518; color: #fff; width: 120px; height: 36px; border: 0; margin: 15px 28px; } </style> </head> <body> <div class="content"> <div class="frombox"> <h1 class="title">传智学员信息登记表</h1> <form action="" method="GET"> <div class="line"> <label class="tip">用户登录名：</label> <input type="text" name="username" value="mymail@163.com" readonly="readonly" disabled="disabled"> <label>(不能修改，只能查看)</label> </div> <div class="line"> <label class="tip">真实姓名：</label> <input type="text" name="name" placeholder="例如：王鹏" required pattern="^[\u4e00-\u9fa5]+$"> <label>(必须填写，只能输入汉字)</label> </div> <div class="line"> <label class="tip">真实年龄：</label> <input type="number" name="age" min="0" max="100" value="24" required placeholder="16-100"> <label>(必须填写)</label> </div> <div class="line"> <label class="tip">出生日期：</label> <input type="date" name="date" required> <label>(必须填写)</label> </div> <div class="line"> <label class="tip">电子邮箱：</label> <input type="email" name="email" placeholder="123456@qq.com" required> <label>(必须填写)</label> </div> <div class="line"> <label class="tip">身份证号：</label> <input type="text" name="idcard" required pattern="^[0-9]{17}[0-9Xx]$"> <label>(必须填写，能够以数字，字母x结尾的短身份证号)</label> </div> <div class="line"> <label class="tip">手机号码：</label> <input type="tel" name="tel" required> <label>(必须填写)</label> </div> <div class="line"> <label class="tip">个人主页：</label> <input type="url" name="myurl" placeholder="http://bk.notei.cn"> <label>(请选择网址)</label> </div> <div class="line color"> <label class="tip">幸运颜色：</label> <input type="color" name="luckcolor" value="#E2D546"> <label>(请选择你喜欢的颜色)</label> </div> <div class="line btn"> <input type="submit" value="提交"> <input type="reset" value="重置"> </div> </form> </div> </div> </body> </html>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>Document</title> <style> * { margin: 0; padding: 0; } div { box-sizing: border-box; } body { background-color: #FFF9ED; } a { text-decoration: none; color: #333; } li { list-style-type: none; } .content { display: flex; flex-direction: column; justify-content: center; align-items: center; } .container { width: 980px; margin: 0 auto; height: 100px; } .nav { background: url("images/head_bg.jpg") repeat-x; height: 128px; width: 100%; } .nav li { float: left; } .nav .item a { display: inline-block; width: 120px; height: 128px; line-height: 64px; text-align: center; color: #fff; margin: 0 5px; font-size: 17px; } .nav .item a:hover { background: url("images/xuanfu.png") no-repeat; } .banner img { width: 100%; } .borbox { background-color: #EC6E47; padding: 10px 30px; height: auto; } .borbox ul { width: 100%; display: flex; padding: 10px; background-color: #fff; } .borbox ul li { flex: 1 0 0; height: 100%; margin: 0 3px; } .borbox ul li .flexbox { display: flex; } .borbox ul li div { background-color: #242424; color: #fff; } .borbox ul li .top { margin-bottom: 8px; } .borbox ul li .name { text-align: center; flex: 1 0 0; } .borbox ul .left .top .name { line-height: 169px; } .borbox ul .left .bottom .name { line-height: 137px; } .borbox ul .center .top { height: 117px; line-height: 117px; } .borbox ul .center .bottom { height: 189px; line-height: 189px; } .borbox ul .right .top { height: 313px; line-height: 313px; } .morebox { margin-top: 50px; text-align: left; height: auto; } .morebox>.title { display: inline-block; background-color: #EC6E47; color: #fff; padding: 10px 20px; font-size: 16px; font-weight: normal; } .morebox .list { display: flex; gap: 8px; background-color: #fff; padding: 10px; border: 1px solid #ccc; } .morebox .list li { flex: 1 0 0; border: 1px solid #ccc; padding-bottom: 15px; } .morebox .list li img { width: 100%; border-bottom: 1px solid #ccc; } .morebox .list li .title { text-align: center; width: 100%; color: #666; padding: 10px 0; font-size: 18px; } .morebox .list li .buybox { width: 80%; margin: 0 auto; background: url("./images/gouwu.jpg") no-repeat; background-color: #EC6E47; color: #fff; padding-left: 56px; height: 36px; line-height: 36px; } .footer { background-color: #111; width: 100%; color: #fff; padding: 50px 0; text-align: center; font-size: 14px; line-height: 29px; } </style> </head> <body> <div class="content"> <div class="nav"> <ul class="container"> <li><img src="./images/logo.png" alt="logo"></li> <li class="item"><a href="#">穿搭速递</a></li> <li class="item"><a href="#">时尚大片</a></li> <li class="item"><a href="#">星着装</a></li> <li class="item"><a href="#">时尚园</a></li> <li class="item"><a href="#">时尚专栏</a></li> <li class="item"><a href="#">会员/登录</a></li> </ul> </div> <div class="banner"> <img src="./images/banner.jpg" alt=""> </div> <div class="borbox container"> <ul> <li class="left"> <div class="top flexbox"> <img src="./images/pic01.jpg" alt=""> <p class="name">明星时尚</p> </div> <div class="bottom flexbox"> <img src="./images/pic02.jpg" alt=""> <p class="name">明星时尚</p> </div> </li> <li class="center"> <div class="top flexbox"> <img src="./images/pic03.jpg" alt=""> <p class="name">明星时尚</p> </div> <div class="bottom flexbox"> <img src="./images/pic04.jpg" alt=""> <p class="name">明星时尚</p> </div> </li> <li class="right"> <div class="top flexbox"> <img src="./images/pic05.jpg" alt=""> <p class="name">明星时尚</p> </div> </li> </ul> </div> <div class="morebox container"> <h2 class="title">潮流前沿/Tadil current</h2> <ul class="list"> <li> <img src="./images/match01.jpg" alt=""> <p class="title">潮流饰品</p> <div class="buybox"> 快速购买通道 </div> </li> <li> <img src="./images/match02.jpg" alt=""> <p class="title">潮流饰品</p> <div class="buybox"> 快速购买通道 </div> </li> <li> <img src="./images/match03.jpg" alt=""> <p class="title">潮流饰品</p> <div class="buybox"> 快速购买通道 </div> </li> <li> <img src="./images/match04.jpg" alt=""> <p class="title">潮流饰品</p> <div class="buybox"> 快速购买通道 </div> </li> </ul> </div> <div class="footer"> <p> All right reseved©2006-2016 CHAOUUFUSHI.com, All right reseved</p> <p>2021-2018, 版权所有 潮流服饰 85CP备案13385453</p> </div> </div> </body> </html>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <style type="text/css"> * { padding: 0; margin: 0; } li { list-style: none; } div { box-sizing: border-box; } .min-content { width: 980px; margin: 0 auto; } .content { width: 1280px; margin: 0 auto; } .header { height: 120px; line-height: 120px; background: #fff; } .header .logo { float: left; height: 80px; margin-top: 20px; } .header .goto { float: right; color: #666; } .header .goto a { color: #666; text-decoration: none; } .navbox { height: 60px; background: #404042; line-height: 60px; color: #fff; font-size: 18px; } .navbox ul li { padding: 0 42px; float: left; } .navbox ul li:hover { background-color: #DA5454; } .banner img { width: 100%; } .function ul { display: flex; } .function ul li { padding: 34px 0; flex: 1 0 0; border: 1px solid #ddd; border-top: 0; border-spacing: 0; } .function .item img { height: 50px; margin: 0 15px 0 28px; float: left; } .function .item .info .title { font-size: 17px; 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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document1</title> <style> * { padding: 0; margin: 0; } li { list-style: none; } a { color: #666; text-decoration: none; } .content { width: 1280px; margin: 0 auto; } .nav { height: 600px; background: url("images/bg.png") center; background-size: cover; } .navlist { padding: 30px 60px; box-sizing: border-box; text-align: center; } .navlist ul li { float: left; line-height: 60px; padding: 0 50px; font-size: 16px; } .seach { position: relative; width: 128px; height: 36px; margin-top: 12px; } .seach img { height: 16px; position: absolute; top: calc(50% - 8px); left: 10px; z-index: 10; } .seach .input { position: absolute; top: 0; left: 0; height: 100%; width: 100%; border: none; border-radius: 18px; font-size: 12px; padding-left: 32px; box-sizing: border-box; outline: none; color: #666 } .hot { text-align: center; margin-top: 20px; } .hotlist { margin-top: 20px; text-align: left; padding: 0 60px; box-sizing: border-box; } .hotlist .item .img img { width: 100%; } .hotlist .item .title { padding: 10px; box-sizing: border-box; font-weight: bold; font-size: 18px; color: #333; border-bottom: 1px solid #ddd; } .hotlist .item .info { padding: 10px; padding-bottom: 30px; color: #bbb; box-sizing: border-box; } .hotlist { display: flex; gap: 80px; } .bottomimage img { width: 100%; } .life { background-color: #E1EBF2; margin-top: 50px; text-align: center; padding: 30px 0; } .life ul { text-align: center; } .life ul li { display: inline-block; margin: 20px 20px; } .footer { height: 80px; background: url("images/footer_bg.jpg"); color: #fff; text-align: center; line-height: 80px; margin-top: 50px; } </style> </head> <body> <div class="content"> <div class="nav"> <div class="navlist"> <ul> <li> <img class="logo" src="./images/logo.png" alt=""> </li> <li><a href="#">网站首页</a></li> <li><a href="#">床和床垫</a></li> <li><a href="#">卧室纺织品</a></li> <li><a href="#">灯具照明</a></li> <li class="seach"> <img src="./images/f.png" alt=""> <input class="input" type="text" placeholder="输入商品名称"> <li> </ul> </div> </div> <div class="hot"> <img src="./images/dongtai.jpg" alt=""> <ul class="hotlist"> <li class="item"> <dt class="box"> <dd class="img"> <img src="./images/news1.jpg" alt=""> </dd> <dd class="title">BEST贝达</dd> <dd class="info">将杂乱无章的物品收纳到视线之外，在我怕门后要展示台的心爱之物！</dd> <dd class="bottomimage"><img src="./images/yinying.jpg" alt=""></dd> </dt> </li> <li class="item"> <dt class="box"> <dd class="img"> <img src="./images/news2.jpg" alt=""> </dd> <dd class="title">BEST贝达</dd> <dd class="info">将杂乱无章的物品收纳到视线之外，在我怕门后要展示台的心爱之物！</dd> <dd class="bottomimage"><img src="./images/yinying.jpg" alt=""></dd> </dt> </li> <li class="item"> <dt class="box"> <dd class="img"> <img src="./images/news3.jpg" alt=""> </dd> <dd class="title">BEST贝达</dd> <dd class="info">将杂乱无章的物品收纳到视线之外，在我怕门后要展示台的心爱之物！</dd> <dd class="bottomimage"><img src="./images/yinying.jpg" alt=""></dd> </dt> </li> </ul> </div> <div class="life"> <img src="./images/shenghuo.png" alt=""> <ul> <li><img src="./images/img1.jpg" alt=""></li> <li><img src="./images/img2.jpg" alt=""></li> <li><img src="./images/img3.jpg" alt=""></li> </ul> </div> </div> <div class="footer"> 爱家居版权所有2016-2026京ICP备222222222号 京公网安备2222222222222 </div> </body> </html>
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ASCII 控制字符 (字符编码: 0-31) 在ASCII码表中，前32个字符是不能用于打印控制的编码，而是用于控制像打印机一样的外围设备。 0-31ASCII码对应值在下方
Java方法定义格式为: public static void 方法名称(参数){...} 例如: public static void test_fun(){ System.out.println("我的第一个方法"); } 调用方法就是直接 test_fun(); 使用void创建方法是不能使用return来返回结果的 想要返回结果需要使用其他类型例如: public static int 方法名称(参数){... return int} 这样的写法就可以返回一个int参数，其他类型也是一样的例子 -------下面讲讲其他语言的方法定义方式------- 首先就说说PHP的方法定义: function 方法名(参数){...} PHP定义方法时不需要定义方法的数据类型，可直接使用return返回各个类型的数据 另外就是C语言，定义方式: void 方法名(参数){...} C语言也是和Java类似，也是需要再定义时决定数据类型才可以进行返回相应的数据类型，例如int 方法名(参数){...}这样就可以返回一个int类型的
讲解if语句之前先讲一下相关的运算符号 编程语言基本运算符号有: "<" ">" "==" "<=" ">=" "!=" 等 我挨个讲解他们的运算逻辑是怎么个实现的 首先是 ">" 运算符他的作用和数学上的 大于 相同，也是作为两个数的大小进行比较，如3>2，3肯定是大于2的，那么将会返回一个真条件，那如果是2>3，那么将会返回一个假条件，在c语言中，1代表真，0代表假，那么就是3>2返回1，2>3返回0 ">" 运算符和小于是相反的，和数学上面的比较方式类似 "==" 运算符在c语言中代表的是 "=" 打个比方就是1==1，将会返回一个真条件，就是1。如果是1==2那么将会返回0 另外的"<="以及">="同等与数学的 大于等于 和 小于等于。 "!=" 运算符表达的是不等于，也就是1!=1返回0，1!=2将会返回1。 上面是运算符------下面是if语句 if语句代表的就是c语言中的条件语句，写法: if(条件) { //条件为真后执行的代码区 } if语句中的条件值得就是上方的运算结果，打个比方: if(10>=9) { //条件为真后执行的代码区 printf("10>=9为真"); } 10>=9因为是正确的，最后会返回1，也就是真条件 接下来就是if中的else语句，写法: if(10>=9) { //条件为真后执行的代码区 printf("10>=9为真"); }else{ //条件为假后执行的代码区 printf("10>=9为假"); } else{}花括号中的代码在假条件时会被执行，但是10>=9是真条件，所以else花括号中的代码永远不会被执行 那么改成这样: if(10<=9) { //条件为真后执行的代码区 printf("10<=9为真"); }else{ //条件为假后执行的代码区 printf("10<=9为假"); } 因为10并不会小于等于9，所以条件为假，最后会执行的是else花括号中的代码，也就是printf("10<=9为假"); 最后就是else if()语句，这个语句代表的是:如果第一个if()中的条件未满足，那么将继续往下判断else if()中的条件是否为真: if(10<=9) { //条件为真后执行的代码区 printf("10<=9为真"); }else if(10>=9){ //条件为假后执行的代码区 printf("10>=9为真"); } 那么就是先判断10<=9是否未真，如果为真将会直接执行if(){}中的代码，如果为假，就会继续向下面的else if()中的条件进行判断是否为真，如果为真就执行else if()中的内容，如果为假则不执行。 当然if，else if以及else都是可以同时使用的: if(10<=9) { //条件为真后执行的代码区 printf("10<=9为真"); }else if(10>=9){ //条件为假后执行的代码区 printf("10>=9为真"); }else{ //上面条件全部为假 printf("上面条件全部为假"); } 这样写法就是当上面的if()以及else if()中的条件全部判断为假后将会执行else{}区块内的代码！ ---最后是一点扩展内容--- c语言中的条件语句最后的结果都是0或者1，1==1最后会返回1，1==2最后会返回0，然而if()中写的条件最后也会变成0或者1。 if(1) { printf("条件为真"); } 那么这样写是不是也能执行呢？答案是可以的 我们可以写上两行代码来观测1==1最后返回的结果: int a = (1==1); printf("%d",a); 我这边调试最后打印的结果是1，也就是真条件。所以if()进行逻辑的判断
<?php /** * 功能:图片压缩 */ class imgcompress { private $src; private $image; private $imageinfo; private $percent = 0.5; /** * 图片压缩 * @param $src 源图 * @param float $percent 压缩比例 */ public function __construct($src, $percent=1) { $this->src = $src; $this->percent = $percent; } /** 高清压缩图片 * @param string $saveName 提供图片名（可不带扩展名，用源图扩展名）用于保存。或不提供文件名直接显示 */ public function compressImg($saveName='') { $this->_openImage(); if(!empty($saveName)) $this->_saveImage($saveName); //保存 else $this->_showImage(); } /** * 内部：打开图片 */ private function _openImage() { list($width, $height, $type, $attr) = getimagesize($this->src); $this->imageinfo = array( 'width'=>$width, 'height'=>$height, 'type'=>image_type_to_extension($type,false), 'attr'=>$attr ); $fun = "imagecreatefrom".$this->imageinfo['type']; $this->image = $fun($this->src); $this->_thumpImage(); } /** * 内部：操作图片 */ private function _thumpImage() { $new_width = $this->imageinfo['width'] * $this->percent; $new_height = $this->imageinfo['height'] * $this->percent; $image_thump = imagecreatetruecolor($new_width,$new_height); //将原图复制带图片载体上面，并且按照一定比例压缩,极大的保持了清晰度 imagecopyresampled($image_thump,$this->image,0,0,0,0,$new_width,$new_height,$this->imageinfo['width'],$this->imageinfo['height']); imagedestroy($this->image); $this->image = $image_thump; } /** * 输出图片:保存图片则用saveImage() */ private function _showImage() { header('Content-Type: image/'.$this->imageinfo['type']); $funcs = "image".$this->imageinfo['type']; $funcs($this->image); } /** * 保存图片到硬盘： * @param string $dstImgName 1、可指定字符串不带后缀的名称，使用源图扩展名 。2、直接指定目标图片名带扩展名。 */ private function _saveImage($dstImgName) { if(empty($dstImgName)) return false; $allowImgs = ['.jpg', '.jpeg', '.png', '.bmp', '.wbmp','.gif']; //如果目标图片名有后缀就用目标图片扩展名 后缀，如果没有，则用源图的扩展名 $dstExt = strrchr($dstImgName ,"."); $sourseExt = strrchr($this->src ,"."); if(!empty($dstExt)) $dstExt =strtolower($dstExt); if(!empty($sourseExt)) $sourseExt =strtolower($sourseExt); //有指定目标名扩展名 if(!empty($dstExt) && in_array($dstExt,$allowImgs)){ $dstName = $dstImgName; }elseif(!empty($sourseExt) && in_array($sourseExt,$allowImgs)){ $dstName = $dstImgName.$sourseExt; }else{ $dstName = $dstImgName.$this->imageinfo['type']; } $funcs = "image".$this->imageinfo['type']; $funcs($this->image,$dstName); } /** * 销毁图片 */ public function __destruct(){ imagedestroy($this->image); } }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document2</title> <style> * { margin: 0; padding: 0; } .main-box { width: 980px; margin: 50px auto; } .title-box { background-color: #CFE2F0; padding: 0 20px; box-sizing: border-box; border: 1px solid #4188C3; } .title-box .title { color: #333; line-height: 48px; font-size: 18px; font-weight: normal; } .content { border: 1px solid #4188C3; height: 360px; display: flex; background: #F7FBFE; } .content .left { width: 100%; } .content .center { width: 100%; } .content .right { width: 120%; } .left img { width: 80%; height: 42%; margin-top: 5%; margin-left: 10%; border: 1px #ddd solid; } .center ul { padding: 30px 30px; box-sizing: border-box; } .center ul li { height: 180px; } .center .title { font-weight: bold; margin-bottom: 20px; } .center .sub-title { margin-bottom: 20px; font-size: 15px; color: #333; } .right { padding: 20px; box-sizing: border-box; line-height: 34px; font-size: 15px; } </style> </head> <body> <div class="main-box"> <div class="title-box"> <h3 class="title">通讯终端</h3> </div> <div class="content"> <div class="left"> <img src="./images/t2/p1.jpg" alt=""> <img src="./images/t2/p2.jpg" alt=""> </div> <div class="center"> <ul> <li> <p class="title">天价登场 诺基亚N97中文版上市价曝光</p> <p class="sub-title">尽管最夏普三款千万像素手机的隆重发布..</p> </li> <li> <p class="title">诺基亚停止生产WiMAX手机</p> <p class="sub-title">北京时间1月11日消息，据国外媒体报道，..</p> </li> </ul> </div> <div class="right"> <ul> <li>MTK完善3G布局 09年推出人才定制计划</li> <li>山寨机不能成为问题品牌机的替罪羊</li> <li>五大智能手机操作系统大对决</li> <li>短信利器 三星发布独特按键手机T349</li> <li>火拼N97 三星i8910 HD上市售5600元</li> <li>价格不低 索尼爱立信C901中文版将上市</li> <li>天价登场 诺基亚N97中文版上市价曝光</li> <li>轻松进入“街机”档 诺基亚5800现价2360元</li> <li>魔幻键盘音乐手机 摩托罗拉E8仅1478元 </li> </ul> </div> </div> </div> </body> </html>
import java.util.Scanner; //统计字符串信息 public class demo2 { public static void main(String[] args) { System.out.println("请输入字符串"); Scanner sc = new Scanner(System.in); String input = sc.next(); int count = input.length(); //字符个数 int numberCount = 0; //数字计算 int smallCount = 0; //字母计算 int elseCount = 0; //其他字符 for (int i=0;i<count;i++) { char s = input.charAt(i); if((s >= 'a' && s <= 'z') || (s >= 'A' && s <= 'Z')) { //char类型的变量在参与计算或判断大小的时候会自动转为int类型，对应的值为ASCII码 smallCount++; }else if(s >= 48 && s <= 57) { //48 - 57 在ASCII码中对应0-9，s在判断大小时会自动转为ASCII码 numberCount++; }else { elseCount++; } } System.out.println("总字符数量:" + count); System.out.println("数字数量:" + numberCount); System.out.println("字幕数量:" + smallCount); System.out.println("其他字符数量:" + elseCount); } }
# 饮品自动售货机 # 利用函数实现显示饮品信息，计算销售总额 def all_goods(): goods={"可口可乐":3,"百事可乐":3,"冰红茶":2.5,"矿泉水":2,"脉动":4,"茉莉花茶":2.5} return goods def count_total(goods_dict): count=0 for name,num in goods_dict.items(): one_money=all_goods()[name]*num count+=one_money return f'需要支付的金额为{count}元' def show_goods(): print("*"*8,"商品列表","*"*8) for name,money in all_goods().items(): print("{}:{}元".format(name,money)) def select_goods(): select_list = {} while(True): select = input("输入要购买的商品名称(输入q结束) ") if select == "q": return select_list else: number = int(input("输入要购买的数量 ")) if(number < 1): print("请输入正确的数量") else: if(not select in all_goods()): print("请选择正确的商品") else: if(select in select_list): select_list[select] += number else: select_list[select] = number print("添加成功") def main(): #展示商品 show_goods() #循环购买商品（选商品，输数量）直到输入q退出 user_select_goods = select_goods() #计算总额 print(count_total(user_select_goods)) if __name__=='__main__': main()
<!DOCTYPE html> <html lang="zh"> <head> <meta charset="UTF-8"> <title>Document1</title> <style> * { margin: 0; padding: 0; } .main-box { width: 980px; margin: 0 auto; } .header { height: 68px; } .header .logo1 { float: left; } .header .logo2 { float: right; } .list-box { height: 320px; } .list-box ul { height: 400px; margin-top: 68px; } .list-box ul li { float: left; width: 20%; list-style: none; text-align: center; } </style> </head> <body> <div class="main-box"> <div class="header"> <img class="logo1" src="./images/t1/logo.jpg" alt="logo1"> <img class="logo2" src="./images/t1/logo2.jpg" alt="logo2"> </div> <div class="list-box"> <ul> <li> <img class="image" src="./images/t1/person1.jpg" alt=""> <p class="text">person1</p> </li> <li> <img class="image" src="./images/t1/person2.jpg" alt=""> <p class="text">person2</p> </li> <li> <img class="image" src="./images/t1/person3.jpg" alt=""> <p class="text">person3</p> </li> <li> <img class="image" src="./images/t1/person4.jpg" alt=""> <p class="text">person4</p> </li> <li> <img class="image" src="./images/t1/person5.jpg" alt=""> <p class="text">person5</p> </li> </ul> </div> </div> </body> </html>
java的mvc三层架构分别是： View(界面层),Service(业务逻辑层),DAO(数据访问层) V：View 网页视图，为用户提供能够看到并且使用的界面，与用户直接进行交互。 M：Model，业务模型，处理业务 C：Controller，控制器，处理请求，调用模型和视图 dao层负责对数据进行直接操控，最底层 service层负责对传递过来的参数验证，以及其他逻辑验证操作。验证完毕访问dao层进行数据操控 servlet层负责接收参数，然后调用service层进行处理 三个层分工合作，有利于后期的功能维护，那层出了问题就去处理哪层
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document2</title> <style> * { margin: 0; padding: 0; } li { list-style: none; } .main { width: 980px; margin: 0 auto; } .top { background: url("images/logo.jpg") no-repeat; background-position: 50px; height: 56px; line-height: 56px; margin-top: 10px; } .top .user { float: right; margin-right: 50px; } .top .user a { color: #FF9C00; text-decoration: none; } .nav { background-color: #FF9C00; height: 46px; margin-top: 10px; text-align: center; line-height: 46px; font-size: 16px; } .navlist li { display: inline-block; height: 100%; } .navlist li a { height: 100%; padding: 0 25px; color: #B55F23; text-decoration: none; display: inline-block; } .navlist li a:hover { background-color: #fca76a; } .banner { height: 432px; background: url("./images/banner.jpg") no-repeat center; background-size: cover; } .infobox { height: 160px; background-color: #E7BF80; } .infobox ul { text-align: center; } .infobox ul li { width: 120px; height: 120px; border-radius: 50%; display: inline-block; margin: 0 20px; margin-top: 20px; overflow: hidden; position: relative; } .infobox ul li .icon { width: 120px; position: absolute; left: 0; } .infobox ul li .title { color: #A47167; position: absolute; text-align: center; top: 76px; width: 100%; } .shoplist { background-color: #F8F5BC; padding: 50px 80px; padding-bottom: 60px; } .shoplist ul { display: flex; gap: 20px; flex-wrap: wrap; } .shoplist .item { flex: 20%; background-color: #fff; border: 1px solid #ddd; padding: 10px; box-sizing: border-box; } .shoplist .item img { width: 100%; } .shoplist .item .title,.shoplist .item .price { color: #A47167; margin-top: 5px; } .shoplist .item .name,.shoplist .item .price span { color: #FDA6A0; margin-top: 5px; } .footer { height: 120px; line-height: 120px; text-align: center; color: #fff; background: url("./images/footer.png") repeat-x; margin-top: -10px; } </style> </head> <body> <div class="main"> <div class="top"> <div class="user"> <a href="#">登录 |</a> <a href="#">注册</a> </div> </div> <div class="nav"> <ul class="navlist"> <li><a href="#">首页</a></li> <li><a href="#">公司简介</a></li> <li><a href="#">美食甜品</a></li> <li><a href="#">用户留言</a></li> <li><a href="#">联系我们</a></li> </ul> </div> <div class="banner"></div> <div class="infobox"> <ul> <li> <img class="icon" src="./images/list1.png" alt=""> <p class="title">提拉米苏</p> </li> <li> <img class="icon" src="./images/list2.png" alt=""> <p class="title">甜甜圈</p> </li> <li> <img class="icon" src="./images/list3.png" alt=""> <p class="title">芝士蛋糕</p> </li> <li> <img class="icon" src="./images/list4.png" alt=""> <p class="title">马卡龙</p> </li> <li> <img class="icon" src="./images/list5.png" alt=""> <p class="title">西式甜点</p> </li> </ul> </div> <div class="shoplist"> <ul> <li class="item"> <img src="./images/con1.jpg" alt=""> <p class="title">爱的N次方</p> <p class="name">马卡龙</p> <p class="price">价格：<span>30元</span></p> </li> <li class="item"> <img src="./images/con2.jpg" alt=""> <p class="title">果肉果冻</p> <p class="name">双色马卡龙</p> <p class="price">价格：<span>30元</span></p> </li> <li class="item"> <img src="./images/con3.jpg" alt=""> <p class="title">芒果味</p> <p class="name">补丁马卡龙</p> <p class="price">价格：<span>30元</span></p> </li> <li class="item"> <img src="./images/con4.jpg" alt=""> <p class="title">果冻荔枝味</p> <p class="name">多彩马卡龙</p> <p class="price">价格：<span>30元</span></p> </li> <li class="item"> <img src="./images/con5.jpg" alt=""> <p class="title">果冻巧克力</p> <p class="name">西式甜点</p> <p class="price">价格：<span>30元</span></p> </li> <li class="item"> <img src="./images/con6.jpg" alt=""> <p class="title">流动水果</p> <p class="name">提拉米苏</p> <p class="price">价格：<span>30元</span></p> </li> <li class="item"> <img src="./images/con7.jpg" alt=""> <p class="title">玫瑰花型</p> <p class="name">马卡龙</p> <p class="price">价格：<span>30元</span></p> </li> <li class="item"> <img src="./images/con8.jpg" alt=""> <p class="title">木买奶油</p> <p class="name">芝士蛋糕</p> <p class="price">价格：<span>30元</span></p> </li> </ul> </div> <div class="footer"> 西式甜点网版权所有2000-2016京ICP备08001421号 京公网安备110108007702 </div> </div> </body> </html>
//多态的其他使用 public class Test { public static void main(String[] args) { //a变量数据类型为Animal，是Dog类的父类型 //方法调用时: 编译看左边，运行看右边 //意思是进行编译函数的时候会先在左边的类型(Animal)中查找是否有这个方法，如果有再到右边的类型(Dog)中运行被重构的方法，如果未找到方法就会报错 //因为方法编译看左边的特性，如果调用方法时，左边类中没有，而右边类中有这个方法。因为编译看的是左边的类，所以右边的方法也无法被找到 Animal a = new Dog(); a.show(); //调用Dog中被重写的show方法 // a.eat(); 报错的代码，因为编译时在左边的Animal类中未发现这个方法 Animal b = new Cat(); b.show(); //调用Cat中被重写的show方法 //变量调用时: 编译看左边，运行也看左边 //如果左边的类中没有这个变量，那么这个变量将无法被找到 System.out.println(a.a); //a变量在Animal中可以被找到并编译，正常输出100 // System.out.println(a.b); //b变量在右边的Dog类中，无法被找到无法被编译，报错 System.out.println(b.a); ////a变量在Animal中可以被找到并编译，正常输出100 //======================================================================= //解决方法也很简单，直接转换为子类的数据类型即可 Dog d = (Dog) a; Cat c = (Cat) b; d.eat(); c.eat(); } } class Animal { //动物类 private String type = "动物"; int a = 100; public Animal() { } public Animal(String type) { this.type = type; } public String getType() { return type; } public void setType(String type) { this.type = type; } public void show() { System.out.println("动物类型为" + this.type); } } class Dog extends Animal { int b = 200; public Dog() { super("狗狗"); //调用父类构造函数 } public void eat() { System.out.println(super.getType() + "正在吃骨头"); } @Override public void show() { System.out.println("动物类型为" + super.getType()); } } class Cat extends Animal { int c = 300; public Cat() { super("猫猫"); //调用父类构造函数 } public void eat() { System.out.println(super.getType() + "正在吃猫粮"); } @Override public void show() { System.out.println("动物类型为" + super.getType()); } }
void Delay_showNumber(unsigned int ms){ unsigned char i, j; while(--ms){ i = 2; j = 199; do { while (--j); } while (--i); } } void setNumber(unsigned char ledNumber, unsigned char number){ unsigned char ledShow[] = {0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x80}; switch(ledNumber){ case 8:P2_4 = 1; P2_3 = 1; P2_2 = 1; break; case 7:P2_4 = 1; P2_3 = 1; P2_2 = 0; break; case 6:P2_4 = 1; P2_3 = 0; P2_2 = 1; break; case 5:P2_4 = 1; P2_3 = 0; P2_2 = 0; break; case 4:P2_4 = 0; P2_3 = 1; P2_2 = 1; break; case 3:P2_4 = 0; P2_3 = 1; P2_2 = 0; break; case 2:P2_4 = 0; P2_3 = 0; P2_2 = 1; break; case 1:P2_4 = 0; P2_3 = 0; P2_2 = 0; break; } P0 = ledShow[number]; Delay_showNumber(2); P0 = 0x00; Delay_showNumber(1); } #注解内部自带一个延迟函数，可以被任意调用，输入值单位延迟ms .h文件在贴图内
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document1</title> <style> * { padding: 0; margin: 0; } li { list-style: none; } a { color: #666; text-decoration: none; } .content { width: 1280px; margin: 0 auto; } .nav { height: 600px; background: url("images/bg.png") center; background-size: cover; } .navlist { padding: 30px 60px; box-sizing: border-box; text-align: center; } .navlist ul li { float: left; line-height: 60px; padding: 0 50px; font-size: 16px; } .seach { position: relative; width: 128px; height: 36px; margin-top: 12px; } .seach img { height: 16px; position: absolute; top: calc(50% - 8px); left: 10px; z-index: 10; } .seach .input { position: absolute; top: 0; left: 0; height: 100%; width: 100%; border: none; border-radius: 18px; font-size: 12px; padding-left: 32px; box-sizing: border-box; outline: none; color: #666 } .hot { text-align: center; margin-top: 20px; } .hotlist { margin-top: 20px; text-align: left; padding: 0 60px; box-sizing: border-box; } .hotlist .item .img img { width: 100%; } .hotlist .item .title { padding: 10px; box-sizing: border-box; font-weight: bold; font-size: 18px; color: #333; border-bottom: 1px solid #ddd; } .hotlist .item .info { padding: 10px; padding-bottom: 30px; color: #bbb; box-sizing: border-box; } .hotlist { display: flex; gap: 80px; } .bottomimage img { width: 100%; } .life { background-color: #E1EBF2; margin-top: 50px; text-align: center; padding: 30px 0; } .life ul { text-align: center; } .life ul li { display: inline-block; margin: 20px 20px; } .footer { height: 80px; background: url("images/footer_bg.jpg"); color: #fff; text-align: center; line-height: 80px; margin-top: 50px; } </style> </head> <body> <div class="content"> <div class="nav"> <div class="navlist"> <ul> <li> <img class="logo" src="./images/logo.png" alt=""> </li> <li><a href="#">网站首页</a></li> <li><a href="#">床和床垫</a></li> <li><a href="#">卧室纺织品</a></li> <li><a href="#">灯具照明</a></li> <li class="seach"> <img src="./images/f.png" alt=""> <input class="input" type="text" placeholder="输入商品名称"> <li> </ul> </div> </div> <div class="hot"> <img src="./images/dongtai.jpg" alt=""> <ul class="hotlist"> <li class="item"> <dt class="box"> <dd class="img"> <img src="./images/news1.jpg" alt=""> </dd> <dd class="title">BEST贝达</dd> <dd class="info">将杂乱无章的物品收纳到视线之外，在我怕门后要展示台的心爱之物！</dd> <dd class="bottomimage"><img src="./images/yinying.jpg" alt=""></dd> </dt> </li> <li class="item"> <dt class="box"> <dd class="img"> <img src="./images/news2.jpg" alt=""> </dd> <dd class="title">BEST贝达</dd> <dd class="info">将杂乱无章的物品收纳到视线之外，在我怕门后要展示台的心爱之物！</dd> <dd class="bottomimage"><img src="./images/yinying.jpg" alt=""></dd> </dt> </li> <li class="item"> <dt class="box"> <dd class="img"> <img src="./images/news3.jpg" alt=""> </dd> <dd class="title">BEST贝达</dd> <dd class="info">将杂乱无章的物品收纳到视线之外，在我怕门后要展示台的心爱之物！</dd> <dd class="bottomimage"><img src="./images/yinying.jpg" alt=""></dd> </dt> </li> </ul> </div> <div class="life"> <img src="./images/shenghuo.png" alt=""> <ul> <li><img src="./images/img1.jpg" alt=""></li> <li><img src="./images/img2.jpg" alt=""></li> <li><img src="./images/img3.jpg" alt=""></li> </ul> </div> </div> <div class="footer"> 爱家居版权所有2016-2026京ICP备222222222号 京公网安备2222222222222 </div> </body> </html>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document1</title> <style> a { color: #333; text-decoration: none; } .box { width: 360px; border: 1px solid #ddd; position: relative; padding: 15px; box-sizing: border-box; } .box a:hover .title { color: #339999; text-decoration: underline; } .box a:active .title { font-size: 30px; text-decoration: underline; } .box a:focus .title { color: pink; } .top_up { position:absolute; left: 0; top: 0; } .adimg { width: 100%; } .title { color: #3e3e3e; font-size: 15px; } .shopinfo { position: relative; height: 100px; } .price { position: absolute; color: rgb(221, 93, 34); font-size: 36px; font-weight: bold; top: 20px; } .priceold { position: absolute; top: 42px; left: 118px; color: #888; font-size: 14px; } .view { position: absolute; right: 0; top: 20px; } .buycount { position: absolute; right: 0; top: 52px; font-size: 13px; } .buycount i { color: red; font-style: normal; } </style> </head> <body> <div class="box"> <a href="#"> <img class="top_up" src="./images/top_tu.gif" alt=""> <img class="adimg" src="./images/adv.jpg" alt=""> <p class="title">【12店通用】领航冰品哈根达斯：冰淇淋双球，口味任选2种，节假通用 超链接效果设置</p> <div class="shopinfo"> <span class="price">￥20.8</span> <span class="priceold">原价￥38</span> <img class="view" src="./images/see.jpg" alt=""> <span class="buycount"><i>32</i>人已购买</span> </div> </a> </div> </body> </html>
关于interrupt函数用法： void +函数名+interrupt +数字0~4 0 表示外部中断0 1 表示定时器/计数器（T0） 2 外部中断1 3 定时器/计数器(T1) 4 串行口 0 一般作为定时器中断使用 4 一般作为串口接收/发送数据 用法: void 函数名() interrupt 4
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//StringBuilder类型示例 public class demo3 { public static void main(String[] args) { //StringBuilder 定义的数据是可改变的 //String 定义的数据是不可改变的，每次覆盖都会产生新的变量 StringBuilder strb1 = new StringBuilder("1123"); //必须使用new方法进行赋值，数据存储在堆中 strb1.append("abc"); //使用append在str1后面添加新的数据，类似一个伪数组同样可以通过charAt的方式访问索引 System.out.println(strb1.charAt(5)); //返回5索引的字符 System.out.println(strb1); StringBuilder strb2 = new StringBuilder("ceshi123"); strb2.reverse(); //容器内的数据进行翻转 String str = strb2.toString(); //StringBuilder类型转为String类型，返回String类型数据 System.out.println(strb2); System.out.println(str); } }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <style> * { margin: 0; padding: 0; } li { list-style: none; } a { text-decoration: none; } .main-box { width: 980px; margin: 0 auto; } .nav { background: url("images/head_bg.jpg") repeat-x; height: 128px; } .nav li { float: left; } .nav .item a { display: inline-block; width: 120px; height: 128px; line-height: 64px; text-align: center; color: #fff; margin: 0 5px; font-size: 17px; } .nav .item a:hover { background: url("images/xuanfu.png") no-repeat; } .banner { margin-top: 10px; } .banner img { width: 100%; } .sortlist { margin-top: 10px; display: flex; box-shadow: 0 0 0 10px rgb(110, 190, 45) inset; padding: 10px; box-sizing: border-box; } .sortlist .leftbox li { display: flex; } .leftbox { width: 333px; } .leftbox li p { display: inline-block; width: 100%; text-align: center; } .leftbox .top p { line-height: 180px; } .leftbox .bottom p { line-height: 150px; } .leftbox .top { height: 180px; background-color: #F2F2F2; } .leftbox .bottom { height: 150px; background-color: #F2F2F2; margin-top: 10px; } .centerbox { width: 280px; margin-left: 10px; } .centerbox .top { display: flex; margin-bottom: 10px; height: 120px; background-color: #F2F2F2; } .centerbox .top p { line-height: 120px; text-align: center; flex: 1; } .centerbox .bottom { background-color: #F2F2F2; display: flex; height: 210px; } .centerbox .bottom p { line-height: 210px; text-align: center; flex: 1; } .rightbox { margin-left: 10px; flex: 1; } .rightbox .top { display: flex; margin-bottom: 10px; height: 100%; background-color: #F2F2F2; } .rightbox .top img { height: 100%; width: 200px; } .rightbox .top p { line-height: 330px; text-align: center; flex: 1; } .hot { margin-top: 50px; } .hot .title { background-color: rgb(110, 190, 45); color: #fff; display: inline-block; padding: 10px 20px; font-weight: normal; } .hot .list { border: 1px solid #ddd; display: flex; padding: 20px; box-sizing: border-box; gap: 10px; } .hot .item { flex: 1; } .hot .item .mainimg { width: 100%; } .hot .item .intitle { text-align: center; font-size: 19px; line-height: 56px; color: #444; } .hot .item .hotinfo { background-color: rgb(110, 190, 45); height: 38px; display: flex; width: calc(100% - 20px); margin-left: 10px; margin-bottom: 10px; } .hot .item { border: 1px solid #ddd; } .hot .item .hotinfo .info { line-height: 38px; color: #fff; text-align: center; flex: 1; font-size: 15px; } .footer { padding: 50px 0; text-align: center; color: #fff; background: #111; margin-top: 20px; } </style> <body> <div class="nav"> <ul class="main-box"> <li><img src="./images/logo.png" alt="logo"></li> <li class="item"><a href="#">首页</a></li> <li class="item"><a href="#">学校介绍</a></li> <li class="item"><a href="#">课程设置</a></li> <li class="item"><a href="#">教资力量</a></li> <li class="item"><a href="#">招生问答</a></li> <li class="item"><a href="#">教学活动</a></li> </ul> </div> <div class="main-box"> <div class="banner"> <img src="./images/banner.jpg" alt="banner"> </div> <div class="sortlist"> <ul class="leftbox"> <li class="top"> <img src="./images/pic01.jpg" alt=""> <p>大学专区</p> </li> <li class="bottom"> <img src="./images/pic02.jpg" alt=""> <p>求职专区</p> </li> </ul> <ul class="centerbox"> <li class="top"> <img src="./images/pic03.jpg" alt=""> <p>高中专区</p> </li> <li class="bottom"> <img src="./images/pic04.jpg" alt=""> <p>考证专区</p> </li> </ul> <ul class="rightbox"> <li class="top"> <img src="./images/pic05.jpg" alt=""> <p>线上精品课专区</p> </li> </ul> </div> <div class="hot"> <h2 class="title">热门课程 / Popular courses</h2> <ul class="list"> <li class="item"> <img class="mainimg" src="./images/match01.jpg" alt=""> <p class="intitle">软件工程师课程</p> <div class="hotinfo"> <img class="hotimg" src="./images/gouwu.jpg" alt=""> <p class="info">高级IT人才的捷径</p> </div> </li> <li class="item"> <img class="mainimg" src="./images/match02.jpg" alt=""> <p class="intitle">Java课程</p> <div class="hotinfo"> <img class="hotimg" src="./images/gouwu.jpg" alt=""> <p class="info">高级IT人才的捷径</p> </div> </li> <li class="item"> <img class="mainimg" src="./images/match03.jpg" alt=""> <p class="intitle">软件工程师课程</p> <div class="hotinfo"> <img class="hotimg" src="./images/gouwu.jpg" alt=""> <p class="info">高级IT人才的捷径</p> </div> </li> <li class="item"> <img class="mainimg" src="./images/match04.jpg" alt=""> <p class="intitle">软件工程师课程</p> <div class="hotinfo"> <img class="hotimg" src="./images/gouwu.jpg" alt=""> <p class="info">高级IT人才的捷径</p> </div> </li> </ul> </div> </div> <div class="footer"> Copyright © 2020-2030 CHAOLIUFUSHIcom, All rights reserved.<br> 2020-2023,版权所有 优课网 00CP备222222222 </div> </body> </html>
常见的进制： 二进制 binary -----> bin 八进制 octal -----> oct 十进制 decimal -----> dec 十六进制 hexadecimal -----> hex php提供了几常见进制之间转换的函数 二进制转为其他进制 binoct();//转为八进制 bindec();//转为十进制 binhex();//转为十六进制 八进制转为其他进制 octbin();//转为二进制 octdec();//转为十进制 octhex();//转为十六进制 十进制转为其他进制 decbin();//转为二进制 decoct();//转为八进制 dechex();转为十六进制 十六进制转为其他进制 hexbin();转为二进制 hexoct();//转为八进制 hexdec();//转为十六进制 上面列举了这么多，其实自己感觉一点用没有，对于上面的这些函数，你只需要记着bin、oct、dec、hex就可以了，你要把a进制转为b进制，那就是ab() 举个简单的例子： 把二进制(bin)转为十进制(dec): bindec(); 但这样可能还不能满足我们的需求，于是php有个我们提供了一个真正实现爱咋转就咋转的函数：base_convert(); base_convert() 该函数有三个参数 string base_convert ( string $number , int $frombase , int $tobase ) 举个列子： hexadecimal=′125458′;//十进制echobaseconvert(hexadecimal, 10, 5);//转为五进制
""" while 7过 i = 1 while i <= 100: i+=1 if i % 7 == 0 or i % 10 == 7: print("过") else: print(i) """ """ for 过 for i in range(1,101): if i % 7 == 0 or i % 10 == 7: print("过") else: print(i) """ """ while 打印星 i = 0 while i <= 5: j = 0 while j <= i: print("*",end="") j+=1 i+=1 print("\n") """ """ for 打印星 for i in range(6): for j in range(i): print("*",end="") print("\n") """ """ for 计算1-100的和 sum = 0 for i in range(1,101): sum += i print(sum) """ """ for 计算25-100之间偶数结果 sum = 0 for i in range(25,101): if i % 2 == 0: sum += i print(sum) """
基本的逻辑比较运算符在前面笔记说过了 链接:http://notei.cn/note_see/64 这里主要是讲 与运算 或运算 非运算 学过一点电子逻辑门都应该有点概念的 与运算在C语言中用的符号是 "&&" 实际用法就是: if(10>=5 && 6<=5)，顾名思义与逻辑就是要让两个逻辑同时为真最后才能返回真条件，反之就是假条件。 最后会返回的结果为0，为什么10>=5明明是真条件为什么会等于0呢？是因为6<=5是假条件导致整个运算结果也为假条件。 也可以多个条件一起进行运算if(1==1&&2==2&&3==3)多个条件一起运算也是可以的，如果三个条件都为真，那么最后会返回一个真条件，反之假条件。 或逻辑运算方式为只要有一个条件为真，那么最后就会返回真条件。反之全部为假条件，最后也只能返回假条件。符号为 "||" 用法为:if(1==1||2==3)。 非逻辑就是在条件的前面加一个 "!" 也就是小写的感叹号，让最后的逻辑取反。如果逻辑为真后加一个"!"条件将会变成假条件，反之为真。
//使用截取隐藏手机号中间部分 public class demo1 { public static void main(String[] args) { String phone = "18153468453"; String start = phone.substring(0,4); String end = phone.substring(7); String newPhone = start + "****" + end; System.out.println(newPhone); } }
#include <REGX52.H> #include <INTRINS.H> #include "app/Timer0.h" sbit left_lun_1 = P0^2; sbit left_lun_2 = P0^3; sbit right_lun_1 = P0^0; sbit right_lun_2 = P0^1; unsigned char SBUFs,DIAN_state; void UART_init(){ //9600bps@11.0592MHz SCON = 0x50; PCON |= 0x80; TMOD |= 0x20; //设置定时器模式 TL1 = 0xFA; //设定定时初值 TH1 = 0xFA; //设定定时初值 ES = 1; //开启接受 EA = 1; ET1 = 0; TR1 = 1; //定时器1开始计时 } void main (){ UART_init(); //初始化定时器1 Timer0Init(); //初始化定时器0 left_lun_1 = 0;left_lun_2 = 0;right_lun_1 = 0;right_lun_2 = 0; //默认状态 while(1){ } } void Delay1000us() //@11.0592MHz { unsigned char i, j; _nop_(); _nop_(); i = 200; j = 105; do { while (--j); } while (--i); } void UART_Routine() interrupt 4 { RI = 0; //SBUF为接受到的信息 SBUFs = SBUF; } void Timer0_Routine() interrupt 1 { static unsigned int T0Count; TL0 = 0x18; //设置定时初值 TH0 = 0xFC; //设置定时初值 T0Count++; if(T0Count >= 1000)T0Count = 0; if(SBUFs == 0x00){ //停止 left_lun_1 = 0;left_lun_2 = 0;right_lun_1 = 0;right_lun_2 = 0; DIAN_state = 0; } if(SBUFs == 0xFF){ //取消转弯 if(DIAN_state == 0) SBUFs = 0x00; if(DIAN_state == 1) SBUFs = 0x01; if(DIAN_state == 2) SBUFs = 0x02; } if(SBUFs == 0x01){ //前进 left_lun_1 = 0;left_lun_2 = 1;right_lun_1 = 0;right_lun_2 = 1; DIAN_state = 1; } if(SBUFs == 0x02){ //后退 left_lun_1 = 1;left_lun_2 = 0;right_lun_1 = 1;right_lun_2 = 0; DIAN_state = 2; } if(SBUFs == 0x03){ //转弯 左 right_lun_1 = 0;right_lun_2 = 1; if(DIAN_state == 1){ if(T0Count >= 4){ T0Count = 0; left_lun_1 = 0;left_lun_2 = 1; }else{ left_lun_1 = 0;left_lun_2 = 0; } }else if(DIAN_state == 2){ if(T0Count >= 4){ T0Count = 0; right_lun_1 = 1;right_lun_2 = 0; }else{ right_lun_1 = 0;right_lun_2 = 0; } } } if(SBUFs == 0x04){ //转弯 右 left_lun_1 = 0;left_lun_2 = 1; if(DIAN_state == 1){ if(T0Count >= 4){ T0Count = 0; right_lun_1 = 0;right_lun_2 = 1; }else{ right_lun_1 = 0;right_lun_2 = 0; } }else if(DIAN_state == 2){ if(T0Count >= 4){ T0Count = 0; left_lun_1 = 1;left_lun_2 = 0; }else{ left_lun_1 = 0;left_lun_2 = 0; } } } } P0口接了四个电机，0-3接口接两个电机，另外两个共享电源 前面调用了定时器0的void
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import java.util.Random; import java.util.Scanner; class java20221217 { public static void main(String[] args) { //红球 1-33 中选择6个 / 篮球 1-16 中选择1个 //生成中将号码 int[] arrNumber = create(); //录入用户输入的红蓝球 int[] userInput = getUserInput(); //得到红球中奖个数 int redCount = getRedCount(arrNumber,userInput); //得到篮球中将个数 int blueCount = getBlueCount(arrNumber,userInput); System.out.println("\n红球中奖个数: " + redCount); System.out.println("蓝球中奖个数: " + blueCount); //判断中奖级别 String result = getResult(redCount, blueCount); System.out.println(result); //查看生成的数据 System.out.println("中奖号码为: "); for (int i : arrNumber) { System.out.print(i + " "); } System.out.println(); System.out.println("我输入的号码为: "); for (int j : userInput) { System.out.print(j + " "); } System.out.println(); } public static boolean contains(int[] arr, int number) { for (int i : arr) { if(i == number) { return true; } } return false; } public static int[] create() { Random random = new Random(); int[] createResult = new int[7]; //存放生成的号码 for(int i=0;i<6;){ int redNumber = random.nextInt(33)+1; if(!contains(createResult, redNumber)) { createResult[i] = redNumber; i++; } } int blueNumber = random.nextInt(16)+1; createResult[6] = blueNumber; return createResult; } public static int[] getUserInput() { int[] userInput = new int[7]; //存放用户输入 Scanner sc = new Scanner(System.in); for(int i=0;i<6;) { System.out.print("请输入第" + (i+1) + "个红色球号码: "); int input = sc.nextInt(); if(!contains(userInput,input)){ if(input >= 1 && input <= 33){ userInput[i] = input; i++; }else{ System.out.println("请输入正确的红色球号码"); } }else{ System.out.println("这个号码已经选择过了"); } } for(int j=0;j<1;) { System.out.print("请输入蓝色球号码: "); int input = sc.nextInt(); if(input >= 1 && input <= 16){ userInput[userInput.length-1] = input; j++; }else{ System.out.println("请输入正确的蓝色球号码"); } } return userInput; } public static int getRedCount(int[] arr,int[] userInput) { int count = 0; for(int i=0;i<arr.length-1;i++) { if(arr[i] == userInput[i]) { count++; } } return count; } public static int getBlueCount(int[] arr,int[] userInput) { if(arr[arr.length-1] == userInput[userInput.length-1]) { return 1; }else{ return 0; } } public static String getResult(int redCount, int blueCount) { if(redCount == 6 && blueCount == 1){ return "一等奖，中奖1000万"; }else if(redCount == 6 && blueCount == 0){ return "二等奖，中奖500万"; }else if(redCount == 5 && blueCount == 1){ return "三等奖，中奖3000"; }else if((redCount == 5 && blueCount == 0) || (redCount == 4 && blueCount == 1)){ return "四等奖，中奖200元"; }else if((redCount == 4 && blueCount == 0) || (redCount == 3 && blueCount == 1) || (redCount == 2 && blueCount == 1)){ return "五等奖，中奖10元"; }else if((redCount == 1 && blueCount == 0) || blueCount == 1){ return "六等奖，中奖5元"; } return "未中奖"; } }
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编写程序，从键盘输入列表，输出列表元素的平均值。其中平均值使用函数进行计算。 def get_input(): return input("请输入数据列表: ") def get_average(list): average = 0 for i in list: average += i average /= len(list) return average input_list = eval(get_input()) average = get_average(input_list) print(average)