std::copy_backward is an STL algorithm to copy a container to the end of another. std::copy_backward does not reverse the order of the copied container, use std::reverse to do so.


#include <algorithm>

#include <cassert>

#include <vector>



int main()

{

  std::vector<int> v;

  v.push_back(1);

  v.push_back(1);



  std::vector<int> w;

  w.push_back(0);

  w.push_back(0);

  w.push_back(0);



  //Copy v to w's end

  std::copy_backward(v.begin(),v.end(),w.end());



  assert(w[0] == 0);

  assert(w[1] == 1);

  assert(w[2] == 1);

}

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(C++) std::copy_backward