15、骂战

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mputestring(stringstring){

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        stringregexcheck=“[\\(\\)\\d\\+\\-\\*/\\]*“;//是否是合法的表达式

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        if(!(regexcheck，string))

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        returnstring;

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        matchermatcher=null;

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        stringtemp=““;

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        intindex=-1;

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        stringregex=“\\([\\d\\\\+\\-\\*/]+\\)“;//提取括号表达式

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        string=(“\\s“，““);//去除空格

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        try{

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        patternpattern=(regex);

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        //循环计算所有括号里的表达式

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        while((string)()){

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        matcher=(string);

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        while(()){

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        temp=();

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        index=(temp);

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        string=(0，index)

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        +computestirngnobracket(temp)

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        +(index+());

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        }

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        }

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        //最后计算总的表达式结果

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        string=computestirngnobracket(string);

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        }catch(numberformatexceptione){

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        ();

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