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请教高手1007?

Posted by lanxisha at 2005-08-24 22:38:09
我的程序显示错误为:RUNTIME ERROR
什么原因呢?
如下:

#include<iostream>
#include<string>
#include<vector>
using namespace std;

typedef vector<int> vint;
typedef vector<string> vstr;

int sort(string s){
	int result=0;
	for(int i=0;i<s.length();i++)
		for(int j=i;j<s.length();j++)
			if(s[i]>s[j])result++;

	return result;
}

int main(){
	int num,lenth;
	string str;
	vint sortness;
	vstr s;
	cin>>lenth>>num;
	for(int i=0;i<num;i++){
		cin>>str;
		s.push_back(str);
		sortness.push_back(sort(s[i]));
	}
	
	for(int m=0;m<num;m++)
		for(int n=m+1;n<num;n++){
			string temp;
			int temp2;
		
			if(sortness[m]>sortness[n]){
				temp=s[m];
				s[m]=s[n];
				s[n]=temp;

				temp2=sortness[m];
				sortness[m]=sortness[n];
				sortness[n]=temp2;
			}

		}
    
	for(int k=0;k<s.size();k++)
		cout<<s[k]<<endl;

return 0;

}



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