Function swap

Exercises/NoModules/Chapter 10/Soln10_06.cpp:40–45

template <typename T>
void swap(std::vector<T>& data, size_t first, size_t second)
{
  auto temp{data[first]};
  data[first] = data[second];
  data[second] = temp;
}

// Sort data in ascending sequence
template <typename T>