处理Newman社交网络的数据

将Newman社交网络数据集格式转换为普通数据集程序，以备以后使用

#include<fstream>
#include<iostream>
#include<string>
#include<sstream>
using namespace std;
int main()
{
	ifstream in("../data/data/co_author.txt",ios_base::in);
	ofstream out("../data/data/co_author",ios_base::out|ios_base::app);
	string line;
	int i=0;
	while(getline(in,line))
	{
		if(line[2]=='e'|line[2]=='['|line[2]==']');
		else
		{
			string word,vertex;
			istringstream stream(line);
			stream>>word;
			stream>>vertex;
			if(i==0)
			{
				i++;
				out<<vertex<<"\t";
			}
			else if(i==1)
			{
				i++;
				out<<vertex<<"\t";
			}
			else if(i==2)
			{
				i=0;
				out<<vertex<<"\n";
			}
		}
	}
	in.close();
	out.close();
}#includ