四则运算2

Posted 2020-10-17 天明宝

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1设计思想

本题四则运算需要满足加减法在100以内，乘除法满足九九运算表，使用java文件判断是否满足加减法条件，利用javascript计时器来计时。

2源程序代码

仅写java及jsp文件

1 package com.sizeuser.msg.calculate;
2 public interface Calculate {
3 public int add(int add1,int add2);
4 public int subtraction(int subtract1,int subtract2);
5 public int multiply(int multiply1,int multiply2);
6 public int divid(int dividend,int divid);
7 }

Calculate.java

 1 package com.sizeuser.msg.calculate;
 2 
 3 import java.util.Random;
 4 
 5 import org.apache.jasper.tagplugins.jstl.core.Out;
 6 
 7 import com.sun.org.apache.bcel.internal.generic.ReturnaddressType;
 8 
 9 public class CalculateImpl implements Calculate{
10     static Random random=new Random();
11     @Override
12     public int add(int add1, int add2) {
13         int sum;
14         if(add1+add2<=100&&add1+add2>0)
15         {
16             sum=add1+add2;
17             return sum;
18         }
19         return 0;
20     }
21     @Override
22     public int subtraction(int subtract1, int subtract2) {
23         int sum;
24         if(subtract1-subtract2>0)
25         {
26             sum=subtract1-subtract2;
27             return sum;
28         }
29         return 0;
30     }
31     @Override
32     public int multiply(int multiply1, int multiply2) {
33         if(multiply1>0&&multiply1<=9&&multiply2>0&&multiply2<=9)
34         {
35         return multiply1*multiply2;
36         }
37         return 0;
38     }
39     @Override
40     public int divid(int dividend, int divid) {
41         if (dividend>0&&dividend<=81&&divid>0&&divid<=9&&dividend%divid==0&&dividend/divid>0&&dividend/divid<9) 
42         {
43             return dividend/divid;
44         }
45         return 0;
46     }
47 
48    public static void main(String []args)
49    {
50        
51    }
52 }

CalculateImpl .java

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <script type="text/javascript">
 7 var t;
 8 var c=0;
 9 //全局变量
10 function timedCount()
11 {
12 
13     document.getElementById("num").style.display="none";
14     document.getElementById("jishi").style.display="none";
15     var txtobj=document.getElementById("num");
16     var sum=parseInt(txtobj.value)*60;
17     var sum1=sum-c;
18     //秒
19     var hour=parseInt(sum1/3600);
20     var    minute=parseInt(sum1/60%60);
21     if(minute==60||minute<1)
22         minute=0;
23     var lastsecs=parseInt(sum1%60);
24     lastsecs=lastsecs<10?\'0\'+lastsecs:lastsecs;
25     minute=minute<10?\'0\'+minute:minute;
26     hour=hour<10?\'0\'+hour:hour;
27     c++;
28     document.getElementById("result").innerHTML=hour+":"+minute+":"+lastsecs;
29     t=setTimeout("timedCount()",1000);
30  if(sum1==0)
31  {
32     clearTimeout(t);
33     alert("时间到！");
34  }
35 }
36 </script>
37 </head>
38 <body>
39 <form>
40 
41 <input type = "text" id = "num" >
42 <input type="button" id="jishi" value="开始计时！/分" onClick="timedCount()">
43 <p id="result">
44 </p>
45 </form>
46 </body>
47 </html>

CountDown.jsp

1 <%@ page language="java" contentType="text/html; charset=UTF-8"
2     pageEncoding="UTF-8"%>
3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
4 你好

header

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <html>
 4 <%@include file="header.jsp" %>
 5 <hr>
 6 <form action="sanze.jsp" method="get">
 7 
 8 请输入混合运算的数量：<input type="text" name="num"/><br>
 9 请输入做题时间：<input type="text" name="time" /><br>
10 <input type="submit" value="提交" />
11 </form>
12 </html>

初始

  1 <%@page import="com.sizeuser.msg.calculate.CalculateImpl"%>
  2 <%@page import="com.sizeuser.msg.calculate.Calculate"%>
  3 <%@page import="java.util.Random"%>
  4 <%@ page language="java" contentType="text/html; charset=UTF-8"
  5     pageEncoding="UTF-8"%>
  6 <form action="show.jsp" method="get"/>
  7 <head>
  8 <%
  9 String time=request.getParameter("time");
 10 %>
 11 <script type="text/javascript">
 12 var t;
 13 var c=0;
 14 //全局变量
 15 function timedCount()
 16 {
 17     var txtobj=<%=time%>;
 18     var sum=parseInt(txtobj)*60;
 19     var sum1=sum-c;
 20     //秒
 21     var hour=parseInt(sum1/3600);
 22     var    minute=parseInt(sum1/60%60);
 23     if(minute==60||minute<1)
 24         minute=0;
 25     var lastsecs=parseInt(sum1%60);
 26     lastsecs=lastsecs<10?\'0\'+lastsecs:lastsecs;
 27     minute=minute<10?\'0\'+minute:minute;
 28     hour=hour<10?\'0\'+hour:hour;
 29     c++;
 30     document.getElementById("result").innerHTML=hour+":"+minute+":"+lastsecs;
 31     t=setTimeout("timedCount()",1000);
 32  if(sum1==0)
 33  {
 34     clearTimeout(t);
 35     alert("小朋友，答题时间结束了哦！");
 36     document.getElementById("anniu").click();
 37  }
 38 }
 39 </script>
 40 </head>
 41 <body onLoad="timedCount()";>
 42 <p id="result">
 43 </p>
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