c++ 容器切片反转次序（拷贝到新容器）

code:

// rotate_copy algorithm example
#include <iostream>     // cout
#include <algorithm>    // rotate_copy
#include <vector>       // vector
using namespace std;
int main () {
  int myints[] = {10,20,30,40,50,60,70};

  vector<int> myvector(7);

  rotate_copy(myints,myints+3,myints+7,myvector.begin());

  // print out content:
  cout << "myvector contains:";
  for (vector<int>::iterator it=myvector.begin(); it!=myvector.end(); ++it)
    cout << ' ' << *it;
  cout << '
';

  return 0;
}

输出

myvector contains: 40 50 60 70 10 20 30