阅读程序Stl

#include <iostream>#include <list>#include <iterator>#include <algorithm>using namespace std;int main(){    int ia[5]={1,2,3,4};    list<int>id(ia,ia+4);    ostream_iterator<int>outite(cout," ");    copy(id.begin(),id.end(),outite);    cout<<endl;    copy(ia+1,ia+2,front_inserter(id));    copy(id.begin(),id.end(),outite);    cout<<endl;    copy(ia+3,ia+4,back_inserter(id));    copy(id.begin(),id.end(),outite);    cout<<endl;    list<int>::iterator ite=find(id.begin(),id.end(),3);    copy(ia+0,ia+2,inserter(id,ite));    copy(id.begin(),id.end(),outite);    cout<<endl;    copy(id.rbegin(),id.rend(),outite);    cout<<endl;    return 0;}