四则运算二

1.程序设计思想：

先生成一个1-4的随机数C，分别代表加减乘除。再生成两个1-100的随机数A和B。如果C=1，则判断A+B是否小于100，如果是，输出计算式，如果不满足，则重新升成A和B。其他类似。

2.源代码

sizeyunsuan.java

package sizeyunsuan;

public class sizeyunsuan {

int x,y;

String z;

public static void main(String[] args) {

System.out.println("100以内的整数运算；");

sizeyunsuan qwer[]=new sizeyunsuan[100];

int o=0,mm;

String ss;

for(int i=0;i<3;i++,o++)

{

for(int j=0;j<10;j++,o++)

{

qwer[o]=new sizeyunsuan();

ss=qwer[o].operationInt(qwer[o]);

System.out.print(ss);

mm=qwer[o].jieguo(qwer[o]);

System.out.print("======"+mm);

System.out.print("\t");

}

System.out.print("\n");

}

public int getX() {

return x;

}

public void setX(int x) {

this.x = x;

}

public int getY() {

return y;

}

public void setY(int y) {

this.y = y;

}

public String getZ() {

return z;

}

public void setZ(String z) {

this.z = z;

}

public String operationInt(sizeyunsuan aaa)

{

int a,b,c;

String aa[]= {"+","-","×","÷"};

a=(int)(Math.random()*100);

b=(int)(Math.random()*4);

c=0;

if(b==0)

{

int e=100-a;

c=(int)(Math.random()*e); //直接让c随机一个小于100-a的数，避免多次出现不成立情况重复随机

}

if(b==1)

{

c=(int)(Math.random()*a); //直接随机一个小于a的数，避免多次出现不成立情况重复随机

}

if(b==2)

{

c = ((int) (Math.random()*100))%100+1;

for(;;) {

if((a*c)<=100) {

break;

}

else {

a = ((int) (Math.random()*100))%100+1;

c = ((int) (Math.random()*100))%100+1;

}

if(b==3)

{

c=(int)(Math.random()*99+1);

for(;;)

{

if(a%c!=0)

{

a=(int)(Math.random()*99+1); //不成立直接把a和c全部随机，避免a为质数产生死循环

c=(int)(Math.random()*a+1);

}

else {break;}

}

aaa.x=a;

aaa.z=aa[b];

aaa.y=c;

String ss=a+aa[b]+c;

return ss;

}

public int jieguo(sizeyunsuan aa)

{

int t=0;

if("+".equals(aa.z))

{

t=aa.x+aa.y;

}

if("-".equals(aa.z))

{

t=aa.x-aa.y;

}

if("×".equals(aa.z))

{

t=aa.x*aa.y;

}

if("÷".equals(aa.z))

{

t=aa.x/aa.y;

}

return t;

}

jiejian.jsp

<%@page import = "sizeyunsuan.sizeyunsuan" %>

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

//<meta http-equiv="refresh" content ="5;url=panduan.jsp">

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

</head>

<body>

body{

background:url("G:/java/sizeyunsuan/jiemian2.jpg");

background-size:1920px 1400px;

}

</style>

<% int tm = 0;

request.setCharacterEncoding("utf-8");

if(request.getParameter("time")!=null){

tm=(Integer.parseInt(request.getParameter("time")));

}%>

var maxtime = "<%=tm*60%>";

// 半个小时，按秒计算，自己调整!

function CountDown(){

if(maxtime>=0){

var minutes = Math.floor(maxtime/60);

var seconds = Math.floor(maxtime%60);

var msg = "距离结束还有"+minutes+"分"+seconds+"秒";

document.all["timer"].innerHTML=msg;

if(maxtime == 1*60) alert('注意，还有1分钟!');

--maxtime;

}

else{

clearInterval(timer);

alert("时间到，结束!");

}

timer = setInterval("CountDown()",1000);

setTimeout('window.location="jieguo.jsp"',maxtime*1000);

setTimeout( "submitFun()", maxtime*1000 );

function submitFun() {

document.getElementById("myForm").submit();

}

</script>

sizeyunsuan aa[]=new sizeyunsuan[30];

String ss="";

int i=0,k=1,j=0;

for(;j<15;j++)

{

for(i=0;i<2;i++)

{

aa[i]=new sizeyunsuan();

<%=aa[i].operationInt(aa[i])+"=" %></font>

</td>

<td >

<input type = "text" name = "result"style="height:50px;width:100px;font-size:45px;

border:0px;background:rgba(0, 0, 0, 0);"/>

</td>

ss +=Integer.toString(aa[i].jieguo(aa[i]))+"/";

session.setAttribute("right", ss);

}

}

<input type = "submit" value = ""style="width:250px;height:250px;

background:url(G:/java/sizeyunsuan/success.png);background-size:250px 250px;

border-style:none;

position: absolute;right:900px;top:500px;"/>

</td>

</tr>

</table>

</form>

</body>

</html>

panduan.jsp

<%@page import = "sizeyunsuan.sizeyunsuan" %>

<%@page import = "java.sql.*" %>

<%@page import = "java.sql.PreparedStatement" %>

<%@ 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>

body{

background:url("G:/java/sizeyunsuan/jieguo.jpg");

background-size:1920px 1080px;

}

</style>

String result[] = request.getParameterValues("result");

String str = (String)session.getAttribute("right");

String[] right = str.split("/");

int countright = 0;

double kkk;

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>

}

kkk=countright;

kkk=kkk/30*100;

<%="共答对了"+countright+"道题"%>

<%="成功率为"%>

<%=kkk+"%" %>

<br>

<td><a href = "welcome.jsp">返回做下一组题

</html>

welcome.jsp

<%@page import = "sizeyunsuan.sizeyunsuan" %>

<%@ 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>

</head>

<body>

body{

background:url("G:/java/sizeyunsuan/welcome2.jpg");

background-size:1920px 1200px;

background-attachment: fixed;

}

</style>

<tr>

<td style="border-style:none;text-align:right;"> 请选择测试时间：</td>

<input type="radio" name="time" value="6">6分钟

<input type="radio" name="time" value="7">7分钟

<input type="radio" name="time" value="8">8分钟

<input type="radio" name="time" value="9">9分钟

</td>

</tr>

</div>

<input type = "submit" value = ""style="margin-top:450px;width:250px;height:250px;

background:url(G:/java/sizeyunsuan/start.png);background-size:250px 250px;

border-style:none;"/>

</td>

</tr>

</table>

</form>

</body>

</html>

3.运行结果截图：

posted @ 2017-12-07 11:35 sTrive。阅读(261) 评论(0) 收藏举报

sTrive。

四则运算二

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