import?java.io.BufferedWriter;
import?java.io.FileWriter;
import?java.io.IOException;
import?java.util.ArrayList;
import?java.util.Random;
import?java.util.Scanner;
import?java.util.logging.Handler;

import?javax.script.scriptEngine;
import?javax.script.scriptEngineManager;
import?javax.script.scriptException;
import?javax.sound.sampled.spi.AudioFileReader;

/*
?*?@author?zhangtx
?*?Time?2018.03.15
?*?
?*/
public?class?Arithmetic?{
	
	public?static?void?main（String[]?args）{
	
	????????creatArith（）;//產生運算式
	}
	//產生隨機數
	public?static?int?getNumber（）{??
	????????int?number?=?0;??
	????????Random?num?=?new?Random（）;??
	????????number?=?num.nextInt（100+1）;??
	????????return?number;??
	}?
	//隨機產生運算符號
	public?static?char?getOperator（）{??
????????char?operator?=?0;??
????????Random?ran?=?new?Random（）;??
????????int?i?=?ran.nextInt（4）;??
????????switch（i）{??
????????????case?0:??
????????????????operator?=?‘+‘;??
????????????????break;??
????????????case?1:??
????????????????operator?=?‘-‘;??
????????????????break;??
????????????case?2:??
????????????????operator?=?‘*‘;??
????????????????break;??
????????????case?3:??
????????????????operator?=?‘/‘;??
????????????????break;??
????????}??
????????return?operator;??
?????}?
	
	//產生隨機運算式
	static?scriptEngine?js?=?new?scriptEngineManager（）.getEngineByName（“javascript“）;
	public?static?void?creatArith（）{
		boolean?flag=true;
		int?num=0;
		do?{
			System.out.print（“輸入需要產生的四則運算的個數：“）;
			Scanner?arith_num?=?new?Scanner（System.in）;
			num=arith_num.nextInt（）;
			if（num>=1）?{
				flag?=?true;
			}
			else?{
				flag=false;
				System.out.println（“輸入有誤“）;
			}
		}while（flag==false）;
		ArrayList?arithList?=?new?ArrayList（）;//運算式
		for（int?i=0;i		{
			//產生3~5個運算數
			int?num_number?=?0;
			Random?n?=?new?Random（）;
			num_number?=?n.nextInt（3）+3;
			
			String?arr?=?““;
			for（int?j=0;j				int?number?=?getNumber（）;
				String?operator?=?String.valueOf（getOperator（））;
				arr?+=?number?+?operator;
			}
			arr?=arr.substring（0arr.length（）-1）;
			//將arr轉化為數組
			char[]?arr_str?=?arr.toCharArray（）;
			String?arrString?=?““;
			ArrayList?arrslist1?=?new?ArrayList（）;
			ArrayList?arrslist2?=?new?ArrayList（）;
			ArrayList?arrslist?=?new?ArrayList（）;
			//存儲運算符
			for（int?j=0;j				if（arr_str[j]==‘+‘||arr_str[j]==‘-‘||arr_str[j]==‘*‘||arr_str[j]==‘/‘）?{	
					arrString=String.valueOf（arr_str[j]）;
					arr_str[j]=‘‘;
					arrslist1.add（arrString）;
				}
			}
			//存儲運算數
			String?s?=?new?String（arr_str）;
			String[]?ss?=?s.split（““）;
			for（int?k=0;k				arrslist2.add（ss[k]）;
			}
			//生成運算式
			String[]?arrs1?=?arrslist1.toArray（new?String[arrslist1.size（）]）;//運算符
			String[]?arrs2?=?arrslist2.toArray（new?String[arrslist2.size（）]）;//運算數
			
			for（int?m=0;m				arrslist.add（arrs2[m]）;//運算數
				arrslist.add（arrs1[m]）;//運算符
			}
			arrslist.add（arrs2[arrs2.length-1]）;
			String[]?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????295??2018-03-19?20:22??Arithmetic\.classpath

?????文件????????363??2018-03-19?20:22??Arithmetic\.project

?????文件????????587??2018-03-19?20:22??Arithmetic\.settings\org.eclipse.jdt.core.prefs

?????文件???????6061??2018-03-30?11:06??Arithmetic\bin\Arithmetic.class

?????文件??????????0??2018-03-19?20:22??Arithmetic\README.md

?????文件????????179??2018-03-19?20:22??Arithmetic\result.txt

?????文件???????4595??2018-03-19?20:22??Arithmetic\src\Arithmetic.class

?????文件???????5057??2018-03-19?20:22??Arithmetic\src\Arithmetic.java

?????目錄??????????0??2018-03-30?11:06??Arithmetic\.settings

?????目錄??????????0??2018-03-30?11:06??Arithmetic\bin

?????目錄??????????0??2018-03-30?11:06??Arithmetic\src

?????目錄??????????0??2018-03-30?11:06??Arithmetic

-----------?---------??----------?-----??----

????????????????17137????????????????????12