Largest Number|leetcode,使用stl sort函数排序，排序后容器的内容被改变，尝试各种办法没有找出bug，奇葩！！！！

今天做leetcode中的Largest Number，程序所出的异常，简直让我抓狂，是我程序的bug，还是stl sort的bug啊，不知道有什么好方法，可以确定程序中的问题。

#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<sstream>
#include<iterator>
using namespace std;

static int i=0;
bool compare2(const int t1,const int t2){
    try{
            i++;
            if(0!=t1||0!=t2) cout << "i=" << i << ";" << "t1=" << t1 << ";"<< "t2="<<t2<<endl;
            stringstream s;
            s<<t1;
            string s1=s.str();
            s.str("");
            s.clear();
            s<<t2;
            string s2=s.str();
            bool exchange=false;
            int n,m;
            if(s1.size()>=s2.size()){
                n=s1.size();
                m=s2.size();
            }
            else{
                n=s2.size();
                m=s1.size();
                string t=s1;s1=s2;s2=t;
                exchange=true;
            }

            int i=0,j=0;
            while(i<n){
                if(s1[i]>s2[j])return exchange?false:true;
                else if(s1[i]<s2[j]) return exchange?true:false;
                i++;
                j=(j+1)%m;
            }
    }
    catch(...){
        cout << "an exception was thrown" << endl;
    }

    return true;
}

string largestNumber(vector<int> &num){
    try{
            ostream_iterator<int>output(cout," ");
            copy(num.begin(),num.end(),output);
            cout << endl;
            sort(num.begin(),num.end(),compare2);
            //ostream_iterator<int>output(cout," ");
            copy(num.begin(),num.end(),output);
            cout << endl;
            stringstream ss;
            for(int i=0;i<num.size();i++){
                ss << num[i];
            }
            return ss.str();
    }
    catch(...){
        cout << "异常"<<endl;
    }
}

int main(){
    int A[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
            0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
            0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
            0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
    vector<int>num(A,A+sizeof(A)/sizeof(A[0]));
    cout << largestNumber(num) << endl;
    return 0;
}

使用这么多0进行运行测试，leetcode判定为运行时错误，本机上程序运行的结果，很奇葩！！
运行前num的值全是0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
i=133;t1=537;t2=0
i=134;t1=-1218341808;t2=0
i=265;t1=0;t2=529
i=267;t1=0;t2=537
i=268;t1=0;t2=537
i=399;t1=537;t2=0
i=400;t1=-1218341808;t2=0
i=401;t1=0;t2=537
i=403;t1=0;t2=537
i=404;t1=0;t2=537
i=535;t1=537;t2=0
i=536;t1=-1218341808;t2=0
......
......

i=10878;t1=0;t2=537
i=10999;t1=0;t2=537
i=11121;t1=0;t2=537
i=11244;t1=0;t2=537
i=11368;t1=0;t2=537
i=11493;t1=0;t2=537
i=11619;t1=0;t2=537
i=11746;t1=0;t2=537
i=11874;t1=0;t2=537
i=12003;t1=0;t2=537
运行之后num的值变了，如下：
537 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
53700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
0000000000000000000000000000000
这个纳闷的537是怎么出来的呢？
尝试使用程序中的异常处理来捕捉异常，结果并没有捕捉到异常，这是什么问题呢？Mark亟待解决！！！