package tool;

import java.util.*;
import java.util.List;
import java.util.Scanner;
public class formula {
public void runing(int numtotal,int formtotal,int numrange,boolean muland,boolean negnum) {
        
        Scanner in=new Scanner(System.in);
        System.out.println("請輸入 one fromula use time:");
        RandomFormual B
 
=new RandomFormual (numtotal,formtotal,numrange, muland,negnum);
        List<String> test = new ArrayList<String>();
        List<String> fals = new ArrayList<String>();
        List<Integer> fals_anws = new ArrayList<Integer>();
        test=B.getFormulas();
        
 
double correctrat=0;
        List<Integer> anwser = B.getAnswer0sList(test);
        
        while(true)
        {
        do {
            int all=test.size();
            correctrat=0;
            if(all==0)
                break;
            System.out.println(test.size());//test use
            for
 
(int i=0;i<test.size();i++)
                System.out.println(i+1+".  "+test.get(i)+"=");//test use
            System.out.println("=");//test use
            for(int i=0;i<test.size();i++)
            {
                        System.out.print(i+1+".  "+test.get(i)+"=  ");
                        System.out.print(" 答案：");
                        if(anwser.get(i)==in.nextInt())
                        {
                            System.out.println(" 答案 is：(tset use)"+anwser.get(i));
                            correctrat++;
                            test.remove(i);
                            anwser.remove(i);
                        }
                        
                        fals=test;
                        fals_anws.addAll(anwser);
                        
            }
            System.out.println("是做下一套題還是做錯題 ture or false");
            if(in.nextBoolean())
            {
                break;
            }
            System.out.println(correctrat/all);
            System.out.println("全對了嗎,有沒有超時，沒通過繼續吧");
        }while((correctrat/=test.size())!=1);
        System.out.println("好吧，你過了。");
        System.out.println("是否繼續 true or false");
        if(in.nextBoolean());
        break;

    }
        System.out.println("是否檢視錯題加答案 true or false");
        if(in.nextBoolean());
        for(int i=0;i<fals.size();i++)
            System.out.println(i+".  "+fals.get(i)+"="+fals_anws.get(i));
        System.out.println("是否根據錯題進行答題 true or false");
            if(in.nextBoolean())
            {
                do {
                    
                    for(int i=0;i<fals.size();i++)
                        System.out.println(i+1+".  "+fals.get(i)+"=");//test use
                    System.out.println("=");//test use
                    for(int i=0;i<test.size();i++)
                    {
                                System.out.print(i+1+".  "+fals.get(i)+"=  ");
                                if(fals_anws.get(i)==in.nextInt())
                                {
                                    fals.remove(i);
                                    fals_anws.remove(i);
                                }
                    }
                    System.out.println("是做下一套題還是做錯題 ture or false");
                    if(in.nextBoolean())
                    {
                        break;
                    }
                }while(true);
            }
    }
}

package tool;
import java.util.*;
public class RandomFormual {
    public int numberTotal;//運算運算元
    public int formulaTotal;//運算式數量
    public int numberRange;//數值範圍
    public boolean includeMulAndDiv;//是否包含乘除
    public boolean includeNegNum;//是否包含負數
    public  RandomFormual() {
        this.numberTotal = 2;
        this.formulaTotal = 30;
        this.numberRange = 100;
        this.includeMulAndDiv = false;
        this.includeNegNum = false;
    }
    public  RandomFormual(int numberTotal, int formulaTotal, int numberRange, boolean includeMulAndDiv,
            boolean includeNegNum) {
        this.numberTotal = numberTotal;
        this.formulaTotal = formulaTotal;
        this.numberRange = numberRange;
        this.includeMulAndDiv = includeMulAndDiv;
        this.includeNegNum = includeNegNum;
    }
    // 獲取隨機數
    public int getRandomNumber() {
        Random rand = new Random();
        if (this.includeNegNum) {
            return (rand.nextInt(this.numberRange) + 1) * (rand.nextDouble() > 0.5 ? 1 : -1);
        } else {
            return rand.nextInt(this.numberRange) + 1;
        }
    }
    //得到一個隨機的運算子
    public String getRandomOperator() {
        Random rand = new Random();
        String[] operations = { "+", "-", "*", "/" };
        return operations[rand.nextInt((this.includeMulAndDiv == true) ? 4 : 2)];
    }
    // 生成算式
    
    public String generateFormula() {
        String formula = "";
        for (int i = 0; i < this.numberTotal; i++) {
            if (i >= this.numberTotal - 1) {
                formula += random_kuohao(this.getRandomNumber())+")";
                continue;
            }
            formula +="("+ random_kuohao(this.getRandomNumber()) + " " + this.getRandomOperator() + " ";
        }
        return formula;
    }
    //生成算式集合
    
    public List<String> getFormulas() {
        List<String> set = new ArrayList<String>();
        set.add(this.generateFormula());
        String str="/";
        while (set.size() <= this.formulaTotal){
            for(int i=0;i<set.size();i++)
            {
                String formula=this.generateFormula();
                if(str.equals(formula))
                    if(this.getAnswer(formula)%1!=0)
                        continue;
                    
                if(!formula.equalsIgnoreCase(set.get(i)))
                {
                    set.add(formula);
                    break;
                }
            }
            
        }
        return set;
    }
    //若負數，加括號
    public String random_kuohao(int num) {
        
        if (this.getRandomNumber()%2==0) {
            return "(" + num ;
        }
        return +num+")" ;
    }
    
    
    //生成算式結果
    public int getAnswer(String formula) {
        int length = 0;
        String[] formulaArr = formula.split(" ");
        String operators = "+-*/";
        Stack<Integer> opNumbers = new Stack<Integer>();
        Stack<String> opOperators = new Stack<String>();
        opOperators.add("#");
        while (length < formulaArr.length) {
            String op = formulaArr[length++];
            if (operators.indexOf(op) > -1) {
                String sign = opOperators.peek();
                int priority = compare(op, sign);
                if (priority >= 0) {
                    opNumbers.add(compute(opOperators, opNumbers));
                    opOperators.add(op);
                } else {
                    opOperators.add(op);
                }
                continue;
            }
            opNumbers.add(Integer.parseInt(op.replace("(", "").replace(")", "")));
        }
        while (opOperators.peek() != "#") {
            opNumbers.add(compute(opOperators, opNumbers));
        }
        return opNumbers.pop();
    }
    //比較運算優先順序
    public int compare(String operator1, String operator2) {
        int res = 0;
        switch (operator1) {
        case "+":
        case "-":
            if (operator2.equals("+") || operator2.equals("-") || operator2.equals("*") || operator2.equals("/")) {
                res = 1;
            } else {
                res = -1;
            }
            break;
        case "*":
        case "/":
            if (operator2.equals("*") || operator2.equals("/")) {
                res = 1;
            } else {
                res = -1;
            }
            break;
        }
        return res;
    }
    //算式求值
    public int compute(Stack<String> opOperators, Stack<Integer> opNumbers) {
        int num2 = opNumbers.pop();
        int num1 = opNumbers.pop();
        String _op = opOperators.pop();
        int result = 0;
        switch (_op) {
        case "+":
            result = num1 + num2;
            break;
        case "-":
            result = num1 - num2;
            break;
        case "*":
            result = num1 * num2;
            break;
        case "/":
            result = num1 / num2;
            break;
        }
        return result;
    }
    //生成算式結果陣列
    public int[] getAnswers(List<String> set) {
        int[] arr = new int[set.size()];
        int i = 0;
        for (String str : set) {
            arr[i++] = getAnswer(str);
        }
        return arr;
    }
    public List<Integer> getAnswer0sList(List<String> set) {
        List<Integer> arr = new ArrayList<Integer>();
        for (String str : set) {
            arr.add( getAnswer(str));
        }
        return arr;
    }

}

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
    <%@ page import="tool.*" %>
    <%@ page import="java.util.*" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">

<title>好了嗎</title>
</head>
<body>
<p>
            <font size="4">請輸入你的選擇：<br></font>
              <font size="2"><input type="checkbox" name="one" value="1"></font>  <font size="2">1.自定義<br></font>
            <font size="2"><input type="checkbox" name="two" value="2"></font>  <font size="2">2.二年級程度<br></font>
            <font size="2"><input type="checkbox" name="three" value="3"></font>  <font size="2">3.三年級程度<br></font>
             <font size="2"><input type="checkbox" name="four" value="4"></font> <font size="2">4.四年級程度<br></font>
        </p>
        <form action="" method="get" name="form" id="form">
        <font size="2"><input type="number" name="choice" min="1" max="4" value=NULL> 
             <input type="submit" value="確定" name="submit"></font>
        </form>
        
<%
        String str = request.getParameter("choice");
        int r=0;
        if(str != null)
            {
                r = Integer.parseInt(str);
                out.print("test use : "+r+"<br/>");
            }
            
        else
            r = 0;
        
        if(r==1)
        {
            request.getRequestDispatcher("/byHemself.jsp").forward(request, response);
            
        }
        else if(r==2)
        {
            request.getRequestDispatcher("/two.jsp").forward(request, response);
            out.print("測試用輸出選擇："+r+"<br/>");
        }
        else if(r==3)
        {
            request.getRequestDispatcher("/three.jsp").forward(request, response);
            out.print("測試用輸出選擇："+r+"<br/>");
        }
        else if(r==4)
        {
            request.getRequestDispatcher("/four.jsp").forward(request, response);
            out.print("測試用輸出選擇："+r+"<br/>");
        }
        else
        {
            out.println(" ");
        }

%>
</body>
</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
    <%@ page import="tool.*" %>
    <%@ page import="java.util.*" %>
    <%@ page import="java.io.*" %>

<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta charset="UTF-8">
<title>自選</title>
</head>
<body>

<p>
     <font size="2">請輸入運算運算元 </font>
     <form action="" method="get" name="form" id="form">
        <font size="2"><input type="text" name="data1"  value="2"> 
             <input type="submit" value="確定" name="submit"></font>
        </form>
         <br/>
     <font size="2">  請輸入運算式數量</font>
     <form action="" method="get" name="form" id="form">
        <font size="2"><input type="text" name="data2"  value="30"> 
             <input type="submit" value="確定" name="submit"></font>
        </form>
         <br/>
     <font size="2">  請輸入數值範圍</font>
     <form action="" method="get" name="form" id="form">
        <font size="2"><input type="text" name="data3"  value="100"> 
             <input type="submit" value="確定" name="submit"></font>
        </form>
         <br/>
     <font size="2">   請輸入是否包含乘除(0/1)</font>
     <form action="" method="get" name="form" id="form">
        <font size="2"><input type="text" name="data4"  value="0"> 
             <input type="submit" value="確定" name="submit"></font>
        </form>
        <br/>
      <font size="2">  請輸入是否包含負數(0/1)</font>
      <form action="" method="get" name="form" id="form">
        <font size="2"><input type="text" name="data5"  value="0"> 
             <input type="submit" value="確定" name="submit"></font>
        </form>
    <%        
    %>  
<% 

String str1 = request.getParameter("data1");
int r1=0;
if(str1 != null)
    {
        r1 = Integer.parseInt(str1);
        out.print("test use : "+r1+"<br/>");
    }
    
else
    r1 = 2;


String str2 = request.getParameter("data2");
int r2=0;
if(str2 != null)
    {
        r2 = Integer.parseInt(str2);
        out.print("test use : "+r2+"<br/>");
    }
    
else
    r2 = 30;

String str3 = request.getParameter("data3");
int r3=0;
if(str3 != null)
    {
        r3 = Integer.parseInt(str3);
        out.print("test use : "+r3+"<br/>");
    }
    
else
    r3 = 100;
String str4 = request.getParameter("data4");
int r4=0;
if(str4 != null)
    {
        r4 = Integer.parseInt(str4);
        out.print("test use : "+r4+"<br/>");
    }
    
else
    r4 = 0;
String str5 = request.getParameter("data5");
int r5=0;
if(str5 != null)
    {
        r5 = Integer.parseInt(str5);
        out.print("test use : "+r5+"<br/>");
    }
    
else
    r5 = 0;
    boolean muland=false;//是否包含乘除
    boolean negnum=false;//是否包含負數
    if(r4==1)
        muland=true;
    if(r5==1)
        negnum=true;
    %>
    <%
/*@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@*/

        RandomFormual run=new RandomFormual(r1,r2,r3,muland,negnum);
        List<String> formuals=run.getFormulas();
        List<Integer> anwsers=run.getAnswer0sList(formuals);
        List<String> fals = new ArrayList<String>();
        List<Integer> fals_anws = new ArrayList<Integer>();
        double correctrat=0;
        
%>


<%!boolean cho=true;
int temp; %>


<%
do {
    
    int all=formuals.size();
    correctrat=0;
    if(all==0)
        break;
    out.println(formuals.size());//test use
    for(int i=0;i<formuals.size();i++)
        out.println(i+1+".  "+formuals.get(i)+"=");//test use
    out.println("="+"<br/>");//test use
    for(int i=0;i<formuals.size();i++)
    {
                out.print(i+1+".  "+formuals.get(i)+"=  "+"<br/>");
                out.print(" 答案："+"<br/>");
                PrintWriter pw=response.getWriter();
                
                pw.write("<script language='javascript'>function prom1() {var name = prompt(); if (name){alert(name);temp=name;}}</script>");
                if(anwsers.get(i)==temp)
                {
                    out.println(" 答案 is：(tset use)"+anwsers.get(i)+"</br>");
                    correctrat++;
                    formuals.remove(i);
                    anwsers.remove(i);
                }
                
                fals=formuals;
                fals_anws.addAll(anwsers);
                
    }
    out.println("是做下一套題還是做錯題 ture or false"+"<br/>");
    PrintWriter pw2=response.getWriter();
    pw2.write("<script language='javascript'>function firm() {cho=confirm}</script>");
    if(cho)
    {
        break;
    }
    out.println(correctrat/all);
    out.println("全對了嗎,有沒有超時，沒通過繼續吧"+"<br/>");
}while((correctrat/=formuals.size())!=1);
    out.println("好吧，你過了。"+"<br/>");
    out.println("是否繼續 true or false"+"<br/>");
    out.println("是否檢視錯題加答案 true or false"+"<br/>");
    PrintWriter pw4=response.getWriter();
    pw4.write("<script language='javascript'>function firm() {cho=confirm}</script>");
    if(cho);
        for(int i=0;i<fals.size();i++)
            out.println(i+".  "+fals.get(i)+"="+fals_anws.get(i)+"<br/>");
    out.println("是否根據錯題進行答題 true or false"+"<br/>");
    PrintWriter pw5=response.getWriter();
    pw5.write("<script language='javascript'>function firm() {cho=confirm}</script>");
    if(cho)
    {
        do {
            
            for(int i=0;i<fals.size();i++)
                out.println(i+1+".  "+fals.get(i)+"=");//test use
            out.println("=");//test use
            for(int i=0;i<formuals.size();i++)
            {
                        out.print(i+1+".  "+fals.get(i)+"=  "+"<br/>");
                        PrintWriter pw6=response.getWriter();
                        pw6.write("<script language='javascript'>function prom() {var name = prompt(); if (name){alert(name);temp=name;}}</script>");
                        if(fals_anws.get(i)==temp)
                        {
                            fals.remove(i);
                            fals_anws.remove(i);
                        }
            }
            out.println("是做下一套題還是做錯題 ture or false"+"<br/>");
            PrintWriter pw7=response.getWriter();
            pw7.write("<script language='javascript'>function firm() {cho=confirm}</script>");
            if(cho)
            {
                break;
            }
        }while(true);
    }
        List<String> loop1=new ArrayList<String>();
        Iterator lp1=loop1.iterator();
        while(lp1.hasNext()){
   %>   <%=lp1.next()  %> <br>
   <%
        }
    %>
<p>
        <input type="submit" name="Submit2" value="提交" onclick="firm()" />
</p>
<p>
        <input type="submit" name="Submit3" value="提交" onclick="prom()" />
</p>
</body>
</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
    <%@ page import="tool.*" %>
    <%@ page import="java.util.*" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">

<title>二年級</title>
</head>
<body>
<p>
<font size="2">  請輸入運算式數量</font>
     <form action="" method="get" name="form" id="form">
        <font size="2"><input type="text" name="data2"  value="30"> 
             <input type="submit" value="確定" name="submit"></font>
        </form>
         <br/>
</p>
</body>
</html>