四则运算2

项目计划总结

任务日期	宿舍编写程序
20171205	60
20171206	300
20171207	90

时间记录日志

日期	开始时间	结束时间	中断时间	净时（分钟）	活动	备注
1205	16.30	18.00		90	编写四则运算
	19.00	21.30		150	编写四则运算
1206	14.30	17.30		180	编写四则运算
1206	20.00	22.00		120	编写四则运算

缺陷记录日志

日期	编号	类型	引入阶段	排除阶段	修复阶段	修复缺陷
1205	1		编码	调试	30m
1205	描述：jsp文件缺少跳转语句

package com.jaovo.msg.model;

public class Fraction 
{
    private int leftnumber;
    private int rightnumber;
    public int getRightnumber() 
    {
        return rightnumber;
    }
    public void setRightnumber(int rightnumber) 
    {
        this.rightnumber = rightnumber;
    }
    public int getLeftnumber() 
    {
        return leftnumber;
    }
    public void setLeftnumber(int leftnumber)
    {
        this.leftnumber = leftnumber;
    }
}

package com.jaovo.msg.model;
public class FractionImpl implements IFraction
{
    public int getresult(String str) 
    {
        String num[] = str.split(" ");
        int result = 0;
        int left=Integer.parseInt(num[0]);
        int right=Integer.parseInt(num[2]);
        if(num[1].equals("+"))
        {
            result=left+right;
        }
        else if(num[1].equals("-"))
        {
            result =left-right;
        }
        else if(num[1].equals("*"))
        {
            result = left*right;
        }
        else
        {
            result =left/right; 
        }
        return result;
    }
    /*public String GCD(int leftnumber , int rightnumber)
    {
        int one = Math.abs(numerator);
        int two = Math.abs(denominator);
        int min = one>two?two:one;
        int gcd = 1;
        for(int i = min;i>1;i--)
        {
            if((one%i == 0)&&(two%i == 0))
            {
                gcd = i;
                break;
            }
        }
        String GCD = Integer.toString(one/gcd)+"/"+Integer.toString(two/gcd);
        if((numerator>0&&denominator<0)||(numerator<0&&denominator>0))
        {
            return ("-"+GCD);
        }
        return GCD;
    }*/
    public String showright(int countright, int number) 
    {
        System.out.println("共答对了"+countright+"道题");
        if(countright >= (int)(number*0.9))
        {
            return ("你真棒！");
        }
        else if(countright >= (int)(number*0.8))
        {
            return ("挺好的！");
        }
        else if(countright >= (int)(number*0.6))
        {
            return ("还可以！");
        }
        else
        {
            return ("再接再厉！");
        }
    }
    public String show()
    {
        Fraction suanshi= new Fraction();
        suanshi.setLeftnumber((int) (Math.random()*100));
        suanshi.setRightnumber((int) (Math.random()*100));
        int operation = (int)(Math.random()*4);
        if(operation == 0)
        {
            return(suanshi.getLeftnumber()+" + "+suanshi.getRightnumber()+" = ");
        }
        else if(operation == 1)
        {
            if(suanshi.getLeftnumber()>suanshi.getRightnumber())
            {
                return(suanshi.getLeftnumber()+" - "+suanshi.getRightnumber()+" = ");
            }
            else
            {
                return(suanshi.getRightnumber()+" - "+suanshi.getLeftnumber()+" = ");
            }
            
        }
        else if(operation == 2)
        {
            suanshi.setLeftnumber((int) (Math.random()*10));
            suanshi.setRightnumber((int) (Math.random()*10));
            return(suanshi.getLeftnumber()+" * "+suanshi.getRightnumber()+" = ");
        }
        else
        {
            int suiji=(int) (Math.random()*10);
            suanshi.setRightnumber((int) (Math.random()*9+1));
            suanshi.setLeftnumber(suanshi.getRightnumber()*suiji);
            return(suanshi.getLeftnumber()+" ÷ "+suanshi.getRightnumber()+" = ");
        }
    }
}

package com.jaovo.msg.model;

public interface IFraction 
{
    public int getresult(String str);
    public String show();
    public String showright(int countright, int number);
}

<%@ 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>四则运算</title>
<style type = "text/css">
body{
    font-size:30px;
    color:white;
}
</style>
</head>
<body background = "../timg2.gif">
    <div align="center">
        <form action="math.jsp" method="get">
            请选择题目数量（1~60）: <select name="number" style="font-size:30px">

                <%
                for(int i = 1;i<=60;i++)
                {
                    if(i == 30)
                    {
            %>
                <option value="30" selected>30
                    <%
                        continue;
                    }
            %>
                
                <option value=<%=Integer.toString(i) %>><%= Integer.toString(i)%>
                    <%
                }
            %>
                
            </select> <br> <input type="submit" value="开始" />
        </form>
    </div>
</body>
</html>

<%@page import="com.jaovo.msg.model.FractionImpl"%>
<%@ 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>
<style type = "text/css">
body
{
    font-size:20px;
    color:white;
}
</style>
<body background = "../timg3.gif">
<%
    FractionImpl fractionImpl = new FractionImpl();
    String result[] = request.getParameterValues("result");
    String str = (String)session.getAttribute("right");
    String[] right = str.split(" ");
    int countright = 0;
    for(int i = 0;i<right.length;i++)
    {
        if(right[i].equals(result[i]))
        {
            out.println("第"+(i+1)+"题回答正确！");
            countright++;
        }
        else
        {
            out.println("第"+(i+1)+"题回答错误！正确答案为："+right[i]);
        }
%>
        <br>
<%
    }
%>
    <%="共答对了"+countright+"道题"%>
    <%=fractionImpl.showright(countright, right.length)%>
</html>

<%@page import="com.jaovo.msg.model.FractionImpl"%>
<%@ 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><%=request.getParameter("select") %></title>
<style type="text/css">
input{
     60px;
    padding: 5px;
    border:none;
    font-size:20px;
    border-bottom: solid greenyellow 5px;
    text-align:center;
}
</style>
</head>
<body>
    <%
        long number = Integer.parseInt(request.getParameter("number"));
        FractionImpl fractionImpl = new FractionImpl();
    %>
    <form action = "judge.jsp" method = "get">
    <table cellpadding = "10" border = "0"align = "center">
    <%
        String st = ""; 
        for(int i = 0;i<number/2;i++)
        {
            String str = fractionImpl.show();
            String str1 = fractionImpl.show();
            if(str == null||str1==null)
            {
                i--;
                continue;
            }
            st += fractionImpl.getresult(str) + " " + fractionImpl.getresult(str1) + " ";
    %>
        <tr>
            <td><%=str %></td>
            <td><input type = "text" name = "result"/></td>
            <td width = "40"></td>
            <td><%=str1 %></td>
            <td><input type = "text" name = "result"/></td>
        </tr>
    <%
        }
        if(number%2!=0)
        {
    %>
        <tr>
            <td>
                <%
                    String s = fractionImpl.show();
                    while(s==null)
                    {
                        s = fractionImpl.show();
                    }
                    st += fractionImpl.getresult(s);
                %>
                <%=s %>
            </td>
            <td><input type = "text" name = "result"/></td>
        </tr>
        <%
        }
        session.setAttribute("right", st);
        %>
    </table>
    <div align = "center">
        <input type = "submit" value = "提交" />
    </div>
    </form>
</body>
</html>