Function shuffle

rtpose_wrapper/include/caffe/util/rng.hpp:22–35

// Fisher–Yates algorithm
template <class RandomAccessIterator, class RandomGenerator>
inline void shuffle(RandomAccessIterator begin, RandomAccessIterator end,
                    RandomGenerator* gen) {
  typedef typename std::iterator_traits<RandomAccessIterator>::difference_type
      difference_type;
  typedef typename boost::uniform_int<difference_type> dist_type;

  difference_type length = std::distance(begin, end);
  if (length <= 0) return;

  for (difference_type i = length - 1; i > 0; --i) {
    dist_type dist(0, i);
    std::iter_swap(begin + i, begin + dist(*gen));
  }
}

template <class RandomAccessIterator>
inline void shuffle(RandomAccessIterator begin, RandomAccessIterator end) {