package?newcalculator;

import?java.util.Stack;

public?class?Calculate{
	
	?Stack?wordOfAll=?new?Stack（）;
	?Stack?wordOfOperate=?new?Stack（）;
	?Stack?wordOfOperand=?new?Stack（）;
	

	public??boolean?isNumber（char?ch）{
		if（ch>=‘0‘&&ch<=‘9‘）
			return?true;
		else?
			return?false;
	}
	
	public??boolean?isOper（char?ch）{
		if（ch==‘（‘||ch==‘）‘||ch==‘+‘||ch==‘-‘||ch==‘*‘||ch==‘/‘）
			return?true;
		else?
			return?false;
	}
	
	public??boolean?isNumber（String?str）{
		return?isNumber（str.charAt（0））;
		
	}
	
	/*public??float?Char_To_Number（char?ch）{
		return?ch-‘0‘;//數字字符轉為數字
	}
	
	public??float?strToFlaot（String?strNumber）{
		float?fSum=0;
		int?i=0;
		float?d=10;
		while（i		{
			fSum=fSum*10+Char_To_Number（strNumber.charAt（i））;
			i++;
		}
		i++;
		while（i		{
			fSum+=Char_To_Number（strNumber.charAt（i））/d;
			d*=10;
			i++;
		}
		return?fSum;
	}*/
	
	
	
	protected??boolean?getAllWord（String?str）{
		String?word=new?String（）;
		Stack?transitTack=new?Stack（）;
		
		for（int?i=0;i			
			word+=str.charAt（i）;
			if（isNumber（str.charAt（i）））{
				char?ch;
				boolean?isPointInclude=false;
				while（i					if（ch==‘.‘）
						isPointInclude=true;
					word+=ch;
				}
				if（i==str.length（）-1&&（isNumber（ch=str.charAt（i）））??）
					i++;
				
			}
			else
				if（isOper（str.charAt（i）））{
					i++;
					
				}
					
				else
					return?false;
			try{
				transitTack.push（word）;
			}catch（Exception?e）?{
				System.out.println（e）;
			}

			word=““;
		}	
		wordOfAll.push（“#“）;
		while（!transitTack.isEmpty（））{
			wordOfAll.push（transitTack.pop（））;
		}
		return?true;
	}
	
	
	public??int?toIndex（char?ch）{
		if（ch==‘+‘）
			return?0;
		if（ch==‘-‘）
			return?1;
		if（ch==‘*‘）
			return?2;
		if（ch==‘/‘）
			return?3;
		if（ch==‘（‘）
			return?4;
		if（ch==‘）‘）
			return?5;
		if（ch==‘#‘）
			return?6;
		else?
			return?-1;
	}
	
	
	public??int?compare（String?strFirstString?strSecond）{
		int??arr[][]={{1?1?-1?-1?-1?1?1}
				??????{1?1?-1?-1?-1?1?1}
				??????{1?1?1??1?-1?1?1}
				??????{1?1?1?1?-1?1?1}
				??????{-1?-1?-1?-1?-100}
				??????{1?1?1?1?1?1?1}
				??????{-1-1-1-1-1-10}};
		
	char?chOne=?strFirst.charAt（0）;
	char?chTwo=strSecond.charAt（0）;
	return?arr[toIndex（chOne）][toIndex（chTwo）];
	}
	
	
	protected??String?calculate（String?str）{
		if（!getAllWord（str））{
			return?“input?error!“;
		}
		String?word=new?String（）;
		wordOfOperate.push（“#“）;
		while（wordOfAll.peek（）!=“#“||wordOfOperate.peek（）!=“#“）{
			
		
			word=wordOfAll.pop（）;
			if（isNumber（word））
				wordOfOperand.push（word）;
			else{
				int?compareResult=compare（wordOfOperate.peek（）word）;
				if

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

?????文件????????301??2012-03-25?12:29??Calculator\.classpath

?????文件????????386??2012-03-25?12:29??Calculator\.project

?????文件????????629??2012-04-09?19:55??Calculator\.settings\org.eclipse.jdt.core.prefs

?????文件???????4481??2012-06-05?11:54??Calculator\bin\newcalculator\Calculate.class

?????文件???????2980??2012-06-05?11:54??Calculator\bin\newcalculator\Calculator_Jframe.class

?????文件???????4599??2012-04-24?12:26??Calculator\src\newcalculator\Calculate.java

?????文件???????1736??2012-04-10?22:04??Calculator\src\newcalculator\Calculator_Jframe.java

?????目錄??????????0??2012-06-05?11:54??Calculator\bin\newcalculator

?????目錄??????????0??2012-03-25?17:24??Calculator\src\newcalculator

?????目錄??????????0??2012-03-25?12:29??Calculator\.settings

?????目錄??????????0??2012-06-05?11:54??Calculator\bin

?????目錄??????????0??2012-03-25?12:30??Calculator\src

?????目錄??????????0??2012-03-25?12:29??Calculator

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

????????????????15112????????????????????13