for (int ri=0; ri<orderNb; ri++)
{
std::cout << std::hex << elemsToOrderOn[2*ri] << "|"
<< elemsToOrderOn[2*ri+1]
<< std::endl;
for (int ri=0; ri<orderNb; ri++)
{
std::cout << std::hex << elemsToOrderOn[2*ri] << "|"
<< elemsToOrderOn[2*ri+1]
<< std::endl;