(C++) std::copy_backward

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

  assert(w[0] == 0);
  assert(w[1] == 1);
  assert(w[2] == 1);
}