程序设计思想：利用随机数产生随机四则运算式子，然后检验正误
程序源代码:
chutishumu.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>出题数目</title> </head> <h1 style="font-family:新蒂黑板报底字 ; font-size:5em">选择题目吧</h1> <form action="Chuti.jsp" method="post"> <table align="center" border="0" width="500" style="margin:00px 200px 00px 5px"> <tr> <td style="font-size:2em;500px" align="right">你想做几道题？ </td> <td> <input style="100px;height:30px;" type="text" name="username" /> </td> </tr> <tr> <td style="font-size:2em;500px" align="right">设置时间： </td> <td> <input style="100px;height:30px;" type="text" name="usertime" /> </td> <td style="font-size:2em;500px" align="right">秒 </td> </tr> <tr><td style="150px;height:40px;"></td></tr> <!-- 加了一个自己设置的高度的空行 --> <tr align="center"> <td colspan="2"> <input style="100px;height:30px; margin:00px 20px 00px 150px" type="submit" value="我选好了" /> </body> </html>
<%@page import="com.jaovo.msg.model.arithmetic"%> <%@ page import="javax.swing.*" %> <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head><title>出题页</title></head> <body background="./images/tu2.jpg"> <% //接收客户端传递过来的参数 request.setCharacterEncoding("UTF-8"); String time = request.getParameter("usertime");//接收时间 int time1=0; int x=1; for(int m=0;m<time.length();m++) { time1+=(time.charAt(time.length()-m-1)-'0')*x; x*=10; }//字符串类型的数字转换为整型 成为参数 %> <script> var c=1; var t; var num1=<%=time1%> function timeCount() { document.getElementById("txt").innerHTML=num1-c; c=c+1; t=setTimeout("timeCount()",1000); if(num1==c-1) { clearTimeout(t); alert("时间到了！"); load(); } } function load(){ document.getElementById("anniu").click(); } window.onload =function(){ timeCount();//onload 事件会在页面或图像加载完成后立即发生。 } </script> <h2 align="center" style="font-family:新蒂黑板报底字 ; font-size:4em">开始答题</h2> <td style="font-size:1em;500px" align="right">倒计时：</td> <p id = "txt"></p> <form action="Result.jsp" onsubmit="return validate()==1" method="get"> <% //接收客户端传递过来的参数 request.setCharacterEncoding("UTF-8"); String num = request.getParameter("username");//接收出题的数目 int num1=0; x=1; for(int m=0;m<num.length();m++) { num1+=(num.charAt(num.length()-m-1)-'0')*x; x*=10; }//字符串类型的数字转换为整型 成为参数 arithmetic demo=new arithmetic();//定义对象 String []biaodashi1=new String[num1]; biaodashi1=demo.biaodashi(num1);//接收算式 demo.setsuanshi(biaodashi1);//调用函数 给数据成员算式赋值 以便用于传递 for(int i=0;i<num1;i++) { %> <table align="center" border="0" width="600"> <tr> <td> <% out.println(biaodashi1[i]);//输出表达式 %> </td> <td> <input type="text" name="result[<%=i%>]"/> </td> </tr> <% } session.setAttribute("jieshou",demo); %> </table> <input type="submit" value="交卷" /> </body> </html>
result.jsp
<%@page import="com.jaovo.msg.model.arithmetic"%> <%@ page import="javax.swing.*" %> <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head><title>出题</title></head> <body background="./images/tu3.jpg"> <h1 align="center" style="font-family:新蒂黑板报底字 ; font-size:5em">答题结果</h1> <table align="center" border="0" width="600"> <% //接收客户端传递过来的参数 arithmetic newdemo=new arithmetic(); newdemo=(arithmetic)session.getAttribute("jieshou");//用于接收CHUti界面传过来的数 （对象） String []yoursolution=new String[newdemo.shumu];//接收传过来的文本框的答案 int sumright=0,sumerror=0,empty=0; for(int i=0;i<newdemo.shumu;i++) { request.setCharacterEncoding("UTF-8"); %> <tr> <% out.print(newdemo.suanshi[i]);//算式 yoursolution[i] = request.getParameter("result["+i+"]");//你的答案 out.println(yoursolution[i]); %> <% out.println("正确答案是： "); out.println(newdemo.answer[i]);//正确的答案 %> <% int num1=0; int x=1; for(int m=0;m<yoursolution[i].length();m++) { num1+=(yoursolution[i].charAt(yoursolution[i].length()-m-1)-'0')*x; x*=10; }//字符串类型的数字转换为整型 用于和正确答案比较 因为从出题界面接受的答案是字符串类型 if(yoursolution[i].equals("")) { out.println("你没有回答哦！"); empty++; } else if(num1==newdemo.answer[i]) { sumright++; out.println("恭喜你！回答正确！"); } else { sumerror++; out.println("回答错误，再接再厉！"); } %> </tr><br> <% } %> <tr> <td> <% out.println("回答正确了"+sumright+"道题！"); %> </td> </tr> <tr> <td> <% out.println("回答错误了"+sumerror+"道题！"); %> </td> </tr> <tr> <td> <% out.println("有"+empty+"道题你没有回答哟！"); %> </td> </tr> <a href="chutishumu.jsp">退出</a> </body> </html>
arithmetic.java
package com.jaovo.msg.model; public class arithmetic { public int []answer;//�� public int shumu;//������Ŀ public String []suanshi;//��ʽ public void setsuanshi(String []suanshi) { this.suanshi=suanshi; } public String [] biaodashi(int n) { shumu=n; answer=new int[n]; int a,b,c,d1 = 0,d,d2=0; int []mixture=new int[2]; String []biaodashi=new String[n]; for(int i=0;i<n;i++) { a=(int)(Math.random()*100)+1;//1-100 b=(int)(Math.random()*100)+1; c=(int)(Math.random()*5)+1;//�������һ��1-5��������4��ʾ�ӷ���1��ʾ������2��ʾ�˷���3��ʾ����,5��ʾ��� if(c==5)//������� { do { for(int m=0;m<2;m++) { mixture[m]=(int)(Math.random()*2);//0-1 }//��������� a=(int)(Math.random()*100)+1; b=(int)(Math.random()*100)+1; d=(int)(Math.random()*100)+1;//���������� if(mixture[0]==0&&mixture[1]==0) { biaodashi[i]=a+"+"+b+"+"+d+" = "; d1=a+b+d; } if(mixture[0]==1&&mixture[1]==1) { biaodashi[i]=a+"-"+b+"-"+d+" = "; d2=a-b; d1=a-b-d; } if(mixture[0]==0&&mixture[1]==1) { biaodashi[i]=a+"+"+b+"-"+d+" = "; d1=a+b-d; } if(mixture[0]==1&&mixture[1]==0) { biaodashi[i]=a+"-"+b+"+"+d+" = "; d2=a-b; d1=a-b+d; } } while(d2<0||d1<0); answer[i]=d1; } if(c==4)//���ӷ� { d1=a+b; biaodashi[i]=a+"+"+b+" = "; while(d1>100) { a=(int)(Math.random()*100)+1; b=(int)(Math.random()*100)+1;//1-100 ����1��100 ����1 ��ʾ0-99 d1=a+b; } biaodashi[i]=a+"+"+b+" = "; answer[i]=d1; System.out.print(a+"+"+b+"= "); } if(c==1)//������ { d1=a-b; while(d1<0) { a=(int)(Math.random()*100)+1; b=(int)(Math.random()*100)+1; d1=a-b; } biaodashi[i]=a+"-"+b+" = "; answer[i]=d1; System.out.print(a+"-"+b+"= "); } if(c==2)//�˷� { a=(int)(Math.random()*10);//0-9 b=(int)(Math.random()*10);//1-100 ����1��100 ����1 ��ʾ0-99 d1=a*b; while(a<1||b<1||d1>81) { a=(int)(Math.random()*10);//0-9 b=(int)(Math.random()*10);//1-100 ����1��100 ����1 ��ʾ0-99 } d1=a*b; biaodashi[i]=a+"*"+b+" = "; answer[i]=d1; System.out.print(a+"*"+b+"= "); } if(c==3)//���� { d1=a/b; while(a%b!=0||a/b>9||(a<=81&&b>=10)||(a>9&&a==b)||(a>81)) { a=(int)(Math.random()*100)+1; b=(int)(Math.random()*100)+1;//1-100 ����1��100 ����1 ��ʾ0-99 } d1=a/b; biaodashi[i]=a+"÷"+b+" = "; answer[i]=d1; System.out.print(a+"÷"+b+"= "); } //���� for(int k=i-1;k>=0;k--) { while(biaodashi[i].equals(biaodashi[k])) { a=(int)(Math.random()*100)+1;//1-100 b=(int)(Math.random()*100)+1; c=(int)(Math.random()*5)+1;//�������һ��1-5��������4��ʾ�ӷ���1��ʾ������2��ʾ�˷���3��ʾ����,5��ʾ��� if(c==5) { do//������� { for(int m=0;m<2;m++) { mixture[m]=(int)(Math.random()*2);//0-1 }//��������� a=(int)(Math.random()*100)+1; b=(int)(Math.random()*100)+1; d=(int)(Math.random()*100)+1;//���������� if(mixture[0]==0&&mixture[1]==0) { biaodashi[i]=a+"+"+b+"+"+d+" = "; d1=a+b+d; } if(mixture[0]==1&&mixture[1]==1) { biaodashi[i]=a+"-"+b+"-"+d+" = "; d2=a-b; d1=a-b-d; } if(mixture[0]==0&&mixture[1]==1) { biaodashi[i]=a+"+"+b+"-"+d+" = "; d1=a+b-d; } if(mixture[0]==1&&mixture[1]==0) { biaodashi[i]=a+"-"+b+"+"+d+" = "; d2=a-b; d1=a-b+d; } }while(d2<0||d1<0); answer[i]=d1; } if(c==4) { d1=a+b; biaodashi[i]=a+"+"+b+" = "; while(d1>100) { a=(int)(Math.random()*100)+1; b=(int)(Math.random()*100)+1;//1-100 ����1��100 ����1 ��ʾ0-99 d1=a+b; } biaodashi[i]=a+"+"+b+" = "; answer[i]=d1; System.out.print(a+"+"+b+"= "); } if(c==1) { d1=a-b; while(d1<0) { a=(int)(Math.random()*100)+1; b=(int)(Math.random()*100)+1; d1=a-b; } biaodashi[i]=a+"-"+b+" = "; answer[i]=d1; System.out.print(a+"-"+b+"= "); } if(c==2) { a=(int)(Math.random()*10);//0-9 b=(int)(Math.random()*10);//1-100 ����1��100 ����1 ��ʾ0-99 d1=a*b; while(a<1||b<1||d1>81) { a=(int)(Math.random()*10);//0-9 b=(int)(Math.random()*10);//1-100 ����1��100 ����1 ��ʾ0-99 } d1=a*b; biaodashi[i]=a+"*"+b+" = "; answer[i]=d1; System.out.print(a+"*"+b+"= "); } if(c==3) { while(a%b!=0) { a=(int)(Math.random()*100)+1; b=(int)(Math.random()*100)+1;//1-100 ����1��100 ����1 ��ʾ0-99 } d1=a/b; biaodashi[i]=a+"÷"+b+" = "; answer[i]=d1; System.out.print(a+"÷"+b+"= "); } } } } return biaodashi; } }
运行结果截图：
