Grey Area 代码实现

Problem Description
Dr. Grey is a data analyst, who visualizes various aspects of data received from all over the world everyday. He is extremely good at sophisticated visualization tools, but yet his favorite is a simple self-made histogram generator.

Figure 1: A histogram

Figure 1 is an example of histogram automatically produced by his histogram generator. A histogram is a visual display of frequencies of value occurrences as bars. In this example, values in the interval 0–9 occur five times, those in the interval 10–19 occur three times, and 20–29 and 30–39 once each. Dr. Grey’s histogram generator is a simple tool. First, the height of the histogram is fixed, that is, the height of the highest bar is always the same and those of the others are automatically adjusted proportionately. Second, the widths of bars are also fixed. It can only produce a histogram of uniform intervals, that is, each interval of a histogram should have the same width (10 in the above example). Finally, the bar for each interval is painted in a grey color, where the colors of the leftmost and the rightmost intervals are black and white, respectively, and the darkness of bars monotonically decreases at the same rate from left to right. For instance, in Figure 1, the darkness levels of the four bars are 1, 2/3, 1/3, and 0, respectively. In this problem, you are requested to estimate ink consumption when printing a histogram on paper. The amount of ink necessary to draw a bar is proportional to both its area and darkness.

Input
The input consists of multiple datasets, each of which contains integers and specifies a value table and intervals for the histogram generator, in the following format:
nw
v1
v2
.
.
.
vn
n is the total number of value occurrences for the histogram, and each of the n lines following the first line contains a single value. Note that the same value may possibly occur multiple times. w is the interval width. A value v is in the first (i.e. leftmost) interval if 0 ≤ v<w, the second one if w ≤ v< 2w, and so on. Note that the interval from 0 (inclusive) to w (exclusive) should be regarded as the leftmost even if no values occur in this interval. The last (i.e. rightmost) interval is the one that includes the largest value in the dataset.
You may assume the following:
1 ≤ n ≤ 100
10 ≤ w ≤ 50
0 ≤ vi ≤ 100
for 1 ≤ i ≤ n
You can also assume that the maximum value is no less than w. This means that the histogram has more than one interval. The end of the input is indicated by a line containing two zeros.

Output
For each dataset, output a line containing the amount of ink consumed in printing the histogram. One unit of ink is necessary to paint one highest bar black. Assume that 0.01 units of ink per histogram is consumed for various purposes except for painting bars such as drawing lines and characters (see Figure 1). For instance, the amount of ink consumed in printing the histogram in Figure 1 is:

Each output value should be a 6 decimal fraction.

Sample Input
3 50
100
0
100
3 50
100
100
50
10 10
1
2
3
4
5
16
17
18
29
30
0 0

Sample Output
0.510000
0.260000
1.476667

Grey Area
Problem Description Dr. Grey is a data analyst, who visualizes various aspects of data received from all over the world everyday. He is extremely good at sophisticated visualization tools, but yet his favorite is a simple self-made histogram generator. ![](http://acm.hdu.edu.cn/data/images/C384-1000-1.jpg) Figure 1: A histogram Figure 1 is an example of histogram automatically produced by his histogram generator. A histogram is a visual display of frequencies of value occurrences as bars. In this example, values in the interval 0–9 occur five times, those in the interval 10–19 occur three times, and 20–29 and 30–39 once each. Dr. Grey’s histogram generator is a simple tool. First, the height of the histogram is fixed, that is, the height of the highest bar is always the same and those of the others are automatically adjusted proportionately. Second, the widths of bars are also fixed. It can only produce a histogram of uniform intervals, that is, each interval of a histogram should have the same width (10 in the above example). Finally, the bar for each interval is painted in a grey color, where the colors of the leftmost and the rightmost intervals are black and white, respectively, and the darkness of bars monotonically decreases at the same rate from left to right. For instance, in Figure 1, the darkness levels of the four bars are 1, 2/3, 1/3, and 0, respectively. In this problem, you are requested to estimate ink consumption when printing a histogram on paper. The amount of ink necessary to draw a bar is proportional to both its area and darkness. Input The input consists of multiple datasets, each of which contains integers and specifies a value table and intervals for the histogram generator, in the following format: nw v1 v2 . . . vn n is the total number of value occurrences for the histogram, and each of the n lines following the first line contains a single value. Note that the same value may possibly occur multiple times. w is the interval width. A value v is in the first (i.e. leftmost) interval if 0 ≤ v<w, the second one if w ≤ v< 2w, and so on. Note that the interval from 0 (inclusive) to w (exclusive) should be regarded as the leftmost even if no values occur in this interval. The last (i.e. rightmost) interval is the one that includes the largest value in the dataset. You may assume the following: 1 ≤ n ≤ 100 10 ≤ w ≤ 50 0 ≤ vi ≤ 100 for 1 ≤ i ≤ n You can also assume that the maximum value is no less than w. This means that the histogram has more than one interval. The end of the input is indicated by a line containing two zeros. Output For each dataset, output a line containing the amount of ink consumed in printing the histogram. One unit of ink is necessary to paint one highest bar black. Assume that 0.01 units of ink per histogram is consumed for various purposes except for painting bars such as drawing lines and characters (see Figure 1). For instance, the amount of ink consumed in printing the histogram in Figure 1 is: ![](http://acm.hdu.edu.cn/data/images/C384-1000-2.jpg) Each output value should be a 6 decimal fraction. Sample Input 3 50 100 0 100 3 50 100 100 50 10 10 1 2 3 4 5 16 17 18 29 30 0 0 Sample Output 0.510000 0.260000 1.476667
Grey Area 直方图的问题
Problem Description Dr. Grey is a data analyst, who visualizes various aspects of data received from all over the world everyday. He is extremely good at sophisticated visualization tools, but yet his favorite is a simple self-made histogram generator. Figure 1 is an example of histogram automatically produced by his histogram generator. A histogram is a visual display of frequencies of value occurrences as bars. In this example, values in the interval 0–9 occur five times, those in the interval 10–19 occur three times, and 20–29 and 30–39 once each. Dr. Grey’s histogram generator is a simple tool. First, the height of the histogram is fixed, that is, the height of the highest bar is always the same and those of the others are automatically adjusted proportionately. Second, the widths of bars are also fixed. It can only produce a histogram of uniform intervals, that is, each interval of a histogram should have the same width (10 in the above example). Finally, the bar for each interval is painted in a grey color, where the colors of the leftmost and the rightmost intervals are black and white, respectively, and the darkness of bars monotonically decreases at the same rate from left to right. For instance, in Figure 1, the darkness levels of the four bars are 1, 2/3, 1/3, and 0, respectively. In this problem, you are requested to estimate ink consumption when printing a histogram on paper. The amount of ink necessary to draw a bar is proportional to both its area and darkness. Input The input consists of multiple datasets, each of which contains integers and specifies a value table and intervals for the histogram generator, in the following format. n w v1 v2 ... vn n is the total number of value occurrences for the histogram, and each of the n lines following the first line contains a single value. Note that the same value may possibly occur multiple times. w is the interval width. A value v is in the first (i.e. leftmost) interval if 0 ≤ v < w, the second one if w ≤ v < 2w, and so on. Note that the interval from 0 (inclusive) to w (exclusive) should be regarded as the leftmost even if no values occur in this interval. The last (i.e. rightmost) interval is the one that includes the largest value in the dataset. You may assume the following. 1 ≤ n ≤ 100 10 ≤ w ≤ 50 0 ≤ vi ≤ 100 for 1 ≤ i ≤ n You can also assume that the maximum value is no less than w. This means that the histogram has more than one interval. The end of the input is indicated by a line containing two zeros. Output For each dataset, output a line containing the amount of ink consumed in printing the histogram. One unit of ink is necessary to paint one highest bar black. Assume that 0:01 units of ink per histogram is consumed for various purposes except for painting bars such as drawing lines and characters (see Figure 1). For instance, the amount of ink consumed in printing the histogram in Figure 1 is: 1 × 1 + 2/3× 3/5+1/3× 1/5+ 0 × 15+ 0.01=1 +25+115+ 0.01=1.47666 ..... Each output value should be in a decimal fraction and may have an error less than 10^-6. Sample Input 3 50 100 0 100 3 50 100 100 50 10 10 1 2 3 4 5 16 17 18 29 30 0 0 Sample Output 0.51 0.26 1.476667

Problem Description Dr. Grey is a data analyst, who visualizes various aspects of data received from all over the world everyday. He is extremely good at sophisticated visualization tools, but yet his favorite is a simple self-made histogram generator. Figure 1 is an example of histogram automatically produced by his histogram generator. A histogram is a visual display of frequencies of value occurrences as bars. In this example, values in the interval 0–9 occur five times, those in the interval 10–19 occur three times, and 20–29 and 30–39 once each. Dr. Grey’s histogram generator is a simple tool. First, the height of the histogram is fixed, that is, the height of the highest bar is always the same and those of the others are automatically adjusted proportionately. Second, the widths of bars are also fixed. It can only produce a histogram of uniform intervals, that is, each interval of a histogram should have the same width (10 in the above example). Finally, the bar for each interval is painted in a grey color, where the colors of the leftmost and the rightmost intervals are black and white, respectively, and the darkness of bars monotonically decreases at the same rate from left to right. For instance, in Figure 1, the darkness levels of the four bars are 1, 2/3, 1/3, and 0, respectively. In this problem, you are requested to estimate ink consumption when printing a histogram on paper. The amount of ink necessary to draw a bar is proportional to both its area and darkness. Input The input consists of multiple datasets, each of which contains integers and specifies a value table and intervals for the histogram generator, in the following format. n w v1 v2 ... vn n is the total number of value occurrences for the histogram, and each of the n lines following the first line contains a single value. Note that the same value may possibly occur multiple times. w is the interval width. A value v is in the first (i.e. leftmost) interval if 0 ≤ v < w, the second one if w ≤ v < 2w, and so on. Note that the interval from 0 (inclusive) to w (exclusive) should be regarded as the leftmost even if no values occur in this interval. The last (i.e. rightmost) interval is the one that includes the largest value in the dataset. You may assume the following. 1 ≤ n ≤ 100 10 ≤ w ≤ 50 0 ≤ vi ≤ 100 for 1 ≤ i ≤ n You can also assume that the maximum value is no less than w. This means that the histogram has more than one interval. The end of the input is indicated by a line containing two zeros. Output For each dataset, output a line containing the amount of ink consumed in printing the histogram. One unit of ink is necessary to paint one highest bar black. Assume that 0:01 units of ink per histogram is consumed for various purposes except for painting bars such as drawing lines and characters (see Figure 1). For instance, the amount of ink consumed in printing the histogram in Figure 1 is: 1 × 1 + 2/3× 3/5+1/3× 1/5+ 0 × 15+ 0.01=1 +25+115+ 0.01=1.47666 ..... Each output value should be in a decimal fraction and may have an error less than 10^-6. Sample Input 3 50 100 0 100 3 50 100 100 50 10 10 1 2 3 4 5 16 17 18 29 30 0 0 Sample Output 0.51 0.26 1.476667
Grey Area区域的一个计算
Problem Description Dr. Grey is a data analyst, who visualizes various aspects of data received from all over the world everyday. He is extremely good at sophisticated visualization tools, but yet his favorite is a simple self-made histogram generator. Figure 1 is an example of histogram automatically produced by his histogram generator. A histogram is a visual display of frequencies of value occurrences as bars. In this example, values in the interval 0–9 occur five times, those in the interval 10–19 occur three times, and 20–29 and 30–39 once each. Dr. Grey’s histogram generator is a simple tool. First, the height of the histogram is fixed, that is, the height of the highest bar is always the same and those of the others are automatically adjusted proportionately. Second, the widths of bars are also fixed. It can only produce a histogram of uniform intervals, that is, each interval of a histogram should have the same width (10 in the above example). Finally, the bar for each interval is painted in a grey color, where the colors of the leftmost and the rightmost intervals are black and white, respectively, and the darkness of bars monotonically decreases at the same rate from left to right. For instance, in Figure 1, the darkness levels of the four bars are 1, 2/3, 1/3, and 0, respectively. In this problem, you are requested to estimate ink consumption when printing a histogram on paper. The amount of ink necessary to draw a bar is proportional to both its area and darkness. Input The input consists of multiple datasets, each of which contains integers and specifies a value table and intervals for the histogram generator, in the following format. n w v1 v2 ... vn n is the total number of value occurrences for the histogram, and each of the n lines following the first line contains a single value. Note that the same value may possibly occur multiple times. w is the interval width. A value v is in the first (i.e. leftmost) interval if 0 ≤ v < w, the second one if w ≤ v < 2w, and so on. Note that the interval from 0 (inclusive) to w (exclusive) should be regarded as the leftmost even if no values occur in this interval. The last (i.e. rightmost) interval is the one that includes the largest value in the dataset. You may assume the following. 1 ≤ n ≤ 100 10 ≤ w ≤ 50 0 ≤ vi ≤ 100 for 1 ≤ i ≤ n You can also assume that the maximum value is no less than w. This means that the histogram has more than one interval. The end of the input is indicated by a line containing two zeros. Output For each dataset, output a line containing the amount of ink consumed in printing the histogram. One unit of ink is necessary to paint one highest bar black. Assume that 0:01 units of ink per histogram is consumed for various purposes except for painting bars such as drawing lines and characters (see Figure 1). For instance, the amount of ink consumed in printing the histogram in Figure 1 is: 1 × 1 + 2/3× 3/5+1/3× 1/5+ 0 × 15+ 0.01=1 +25+115+ 0.01=1.47666 ..... Each output value should be in a decimal fraction and may have an error less than 10^-6. Sample Input 3 50 100 0 100 3 50 100 100 50 10 10 1 2 3 4 5 16 17 18 29 30 0 0 Sample Output 0.51 0.26 1.476667

Problem Description Working in corporation is toilsome and rest is important. In leisure time, WisKey like to play Tetris. The Tetris game in board is N*5, and there are 8 kinds of blocks. Look that, red mean the area can’t be place. Other colors mean different kinds of blocks. If I give you C grey blocks (the 1st kind), and other infinite color blocks, Can you fulfil the board without any blocks overlap. Input Each case will contain two integers N (1<=N<=1000) and C (0<=C<=100). N*5 grid follow it. The ‘1’ represent red area, it can’t be place. The ‘0’ represent normal area. Process cases to end of file. Output If you can full of the Tetris, print “YES”, otherwise, print “NO”. Sample Input 1 1 00000 1 1 00100 1 1 01010 4 1 10000 00101 10010 00000 Sample Output YES YES NO YES
Java WEB 连接数据库的登录界面失败？

Problem Description Working in corporation is toilsome and rest is important. In leisure time, WisKey like to play Tetris. The Tetris game in board is N*5, and there are 8 kinds of blocks. Look that, red mean the area can’t be place. Other colors mean different kinds of blocks. If I give you C grey blocks (the 1st kind), and other infinite color blocks, Can you fulfil the board without any blocks overlap. Input Each case will contain two integers N (1<=N<=1000) and C (0<=C<=100). N*5 grid follow it. The ‘1’ represent red area, it can’t be place. The ‘0’ represent normal area. Process cases to end of file. Output If you can full of the Tetris, print “YES”, otherwise, print “NO”. Sample Input 1 1 00000 1 1 00100 1 1 01010 4 1 10000 00101 10010 00000 Sample Output YES YES NO YES

<html> <head> <title>手机批发业务-商品备选区</title> <meta charset="utf-8"> <style type="text/css"> #body{background: url(11.jpg);background-size: 100% 100%;width: 100%;height: 100%;} .table{display: table;border-collapse: separate;} #table-row{display: table-row;} #table-cell{display: table-cell;border:1px solid #ccc;} #table-header-group{display: table-header-group;} #table-row-group{display: table-row-group;} #table-foot-group{display: table-footer-group;} .table-column-group{display:table-column-group;} .table-column{display: table-column;} .font{font-size: 13px;color: grey;} </style> <script type="text/javascript"> var result= ""; var price = new Array(4988.00,9099.00,6399.00,3699.00,2499.00,2699.00); var product new Array("华为P30 Pro 赤茶菊 8+256GB","苹果Xs 双卡双待 全网通 64G","三星 Galaxy S10 8+128GB 皓玉白","One Pulse 7Pro 星雾蓝8+256G","Reno2 Z 8G+128G 晨雾白","小米9 8+256G 幻彩紫"); var isSelected = new Array(0,0,0,0,0,0); function clearAll() { isSelected = [0,0,0,0,0,0]; myForm.sp0.checked = false; myForm.sp1.checked = false; myForm.sp2.checked = false; myForm.sp3.checked = false; myForm.sp4.checked = false; myForm.sp5.checked = false; } function checkOut() { var total = 0; var count = 0; for(var i = 0;i<isSelected.length;i++) {count += isSelected[i];} for(var i = 0;i<price.length;i++) {total = total + price[i]*isSelected[i];} alert("您所选购的"+count+"件，产品总价"+total+"\n"+"请去支付!"); } function shoppingCart() { var selectList = ""; for(var j = 0;j<product.length;j++) { if(isSelected[j]) {selectList +=(j+1) + "-" + product[j] + ",价值" +price[j] + "\n";} } var info = (selectList == "") ? "您的购物车为空，请选购！":selectList; alert(info); } function checkSelect(number) { var temp; switch(number) { case 0:temp = myForm.sp0.checked;break; case 1:temp = myForm.sp1.checked;break; case 2:temp = myForm.sp2.checked;break; case 3:temp = myForm.sp3.checked;break; case 4:temp = myForm.sp4.checked;break; default:temp = myForm.sp5.checked;break; } isSelected[number] = (temp) ? 1 : 0; } </script> </head> <body id="body"> <div class="table" style="margin-left: 400px;text-align: center;" > <form name="myForm" method="post" action=""> <div class="table-column-group"> <div class="table-column"></div> <div class="table-column"></div> <div class="table-column"></div> </div> <div id="table-row-group"> <ul id="table-row" style="height: 300px;"> <li id="table-cell" style="width: 200px;"> <img src="华为P30 Pro.jpg" style="height: 250px;width: 200px;"> <span class="font" name="h41">华为P30 Pro 赤茶菊 8+256GB </span><br> <input type="checkbox" name="sp0" value="4988.00" onclick="checkSelect(0);"><span id="font" >\$&nbsp4988.00</span> </li> <li id="table-cell" style="width: 200px;"> <img src="苹果xs.jpg" style="height: 250px;width: 200px;"> <span class="font" name="h42">苹果Xs 双卡双待 全网通 64G</span><br> <input type="checkbox" name="sp1" value="9099.00" onclick="checkSelect(1);"><span id="font">\$ 9099.00</span> </li> <li id="table-cell" style="width: 200px;"> <img src="三星.jpg" style="height: 250px;width: 200px;"> <span class="font" name="h43">三星 Galaxy S10 8+128GB 皓玉白</span><br> <input type="checkbox" name="sp2" value="6399.00" onclick="checkSelect(2);"><span id="font">\$ 6399.00</span> </li> </ul> </div> <div id="table-row-group"> <ul id="table-row" style="height: 300px;"> <li id="table-cell" style="width: 200px;"> <img src="1+7Prp.jpg" style="height: 250px;width: 200px;"> <span class="font" name="h44">One Pulse 7Pro 星雾蓝8+256G</span><br> <input type="checkbox" name="sp3" value="3699.00" onclick="checkSelect(3);"><span id="font">\$ 3699.00</span> </li> <li id="table-cell" style="width: 200px;"> <img src="oppo.jpg" style="height: 250px;width: 200px;"> <span class="font" name="h45">Reno2 Z 8G+128G 晨雾白</span><br> <input type="checkbox" name="sp4" value="2499.00" onclick="checkSelect(4);"><span id="font">\$ 2499.00</span> </li> <li id="table-cell" style="width: 200px;"> <img src="小米.jpg" style="height: 250px;width: 200px;"> <span class="font" name="h46">小米9 8+256G 幻彩紫</span><br> <input type="checkbox" name="sp5" value="2699.00" onclick="selectList(5);"><span id="font">\$ 2699.00</span> </li> </ul> </div> <div id="table-row-group"> <ul id="table-row" style="height: 60px;"> <li id="table-cell" style="width: 200;border-right: #ffffff;" > <input type="button" name="" value="查看购物车" style="height: 35px;width: 100px;margin-top: 10px;background: #ff60af;border: none;color: #ffffff;" onclick="shoppingCart();"> </li> <li id="table-cell" style="width: 200;border-right: #ffffff;border-left: #ffffff;" > <input type="button" name="" value="收银台结算" style="height: 35px;width: 100px;margin-top: 10px;background: #9f35ff;border: none;color: #ffffff;" onclick="checkOut();"> </li> <li id="table-cell" style="width: 200;border-left: #ffffff;" > <input type="button" name="" value="初始化参数" style="height: 35px;width: 100px;margin-top: 10px;background: #ff8040;border: none;color: #ffffff;" onclick="clearAll();"> </li> </ul> </div> </form> </div> </body> </html> ![图片说明](https://img-ask.csdn.net/upload/201912/16/1576498717_549440.jpg) js一点也没反应。。。
python报错：__init__() missing 1 required positional argument: 'parent'

Problem Description Working in corporation is toilsome and rest is important. In leisure time, WisKey like to play Tetris. The Tetris game in board is N*5, and there are 8 kinds of blocks. Look that, red mean the area can’t be place. Other colors mean different kinds of blocks. If I give you C grey blocks (the 1st kind), and other infinite color blocks, Can you fulfil the board without any blocks overlap. Input Each case will contain two integers N (1<=N<=1000) and C (0<=C<=100). N*5 grid follow it. The ‘1’ represent red area, it can’t be place. The ‘0’ represent normal area. Process cases to end of file. Output If you can full of the Tetris, print “YES”, otherwise, print “NO”. Sample Input 1 1 00000 1 1 00100 1 1 01010 4 1 10000 00101 10010 00000 Sample Output YES YES NO YES

Problem Description Working in corporation is toilsome and rest is important. In leisure time, WisKey like to play Tetris. The Tetris game in board is N*5, and there are 8 kinds of blocks. Look that, red mean the area can’t be place. Other colors mean different kinds of blocks. If I give you C grey blocks (the 1st kind), and other infinite color blocks, Can you fulfil the board without any blocks overlap. Input Each case will contain two integers N (1<=N<=1000) and C (0<=C<=100). N*5 grid follow it. The ‘1’ represent red area, it can’t be place. The ‘0’ represent normal area. Process cases to end of file. Output If you can full of the Tetris, print “YES”, otherwise, print “NO”. Sample Input 1 1 00000 1 1 00100 1 1 01010 4 1 10000 00101 10010 00000 Sample Output YES YES NO YES
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Web播放器解决了在手机浏览器和PC浏览器上播放音视频数据的问题，让视音频内容可以不依赖用户安装App，就能进行播放以及在社交平台进行传播。在视频业务大数据平台中，播放数据的统计分析非常重要，所以Web播放器在使用过程中，需要对其内部的数据进行收集并上报至服务端，此时，就需要对发生在其内部的一些播放行为进行事件监听。 那么Web播放器事件监听是怎么实现的呢？ 01 监听事件明细表 名
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Python新型冠状病毒疫情数据自动爬取+统计+发送报告+数据屏幕（三）发送篇

1. 传统事件绑定和符合W3C标准的事件绑定有什么区别？ 传统事件绑定 &lt;div onclick=""&gt;123&lt;/div&gt; div1.onclick = function(){}; &lt;button onmouseover=""&gt;&lt;/button&gt; 注意： 如果给同一个元素绑定了两次或多次相同类型的事件，那么后面的绑定会覆盖前面的绑定 （不支持DOM事...