等式问题

[java]
<PRE class=java name="code" sizcache="1" sizset="2"><PRE class=java name="code">/* 匪警请拨110,即使手机欠费也可拨通！     
为了保障社会秩序，保护人民群众生命财产安全，警察叔叔需要与罪犯斗智斗勇，因而需要经常性地进行体力训练和智力训练！
某批警察叔叔正在进行智力训练：1 2 3 4 5 6 7 8 9 = 110;     
请看上边的算式，为了使等式成立，需要在数字间填入加号或者减号（可以不填，但不能填入其它符号）。
之间没有填入符号的数字组合成一个数， 
例如：12+34+56+7-8+9 就是一种合格的填法；123+4+5+67-89 是另一个可能的答案。    
 请你利用计算机的优势，帮助警察叔叔快速找到所有答案。    
 每个答案占一行。形如：12+34+56+7-8+9123+4+5+67-89......     
已知的两个答案可以输出，但不计分。         
 
各个答案的前后顺序不重要。  
注意：     
请仔细调试！您的程序只有能运行出正确结果的时候才有机会得分！*/ 
/*public class C3 {
 
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        // String string = "123+4+5+67-89";
 
        char a[] = { ' ', '+', '-' };
        char num[] = { '1', '2', '3', '4', '5', '6', '7', '8', '9' };
        for (char x1 : a)
            for (char x2 : a)
                for (char x3 : a)
                    for (char x4 : a)
                        for (char x5 : a)
                            for (char x6 : a)
                                for (char x7 : a)
                                    for (char x8 : a) {
                                        int result = 0;
                                        char s[] = { x1, x2, x3, x4, x5, x6,
                                                x7, x8 };
                                        String string = "";
                                        for (int i = 0; i <= 7; i++) {
                                            string = string + num[i] + s[i];
                                        }
                                        string = string + num[8];
                                        string = string.replaceAll(" ", "");
 
                                        String jianString[] = string.split("-");
                                        String addString[];
                                        addString = jianString[0].split("[+]");
                                        for (int j = 0; j < addString.length; j++) {
                                            result += Integer
                                                    .parseInt(addString[j]);
                                        }
                                        // result = addResult[0];
                                        for (int i = 1; i < jianString.length; i++) {
 &n

补充：软件开发 , Java ,