第十四周项目—阅读并运行程序，解释程序执行得到的结果(3)

#include <iterator>#include <list>#include <algorithm>#include <iostream>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;}

运行结果：