BitVector Sparse6Writer::constructBitvector(vector<pair<unsigned, unsigned> >& groups, unsigned sizeOfGroups)
{
BitVector result;
for (unsigned i = 0; i < groups.size(); ++i)
{
// append the b[i]
result.appendBit(groups[i].first);
// append sizeOfGroup bits of the integer groups[i].second
result.appendByte(groups[i].second, sizeOfGroups);
}
return result;
}
void Sparse6Writer::padUp(BitVector& bitVector, unsigned numberOfNodes, unsigned k, bool last, bool beforeLast)
{
unsigned numberOfBitsToPad = 0;
while ((bitVector.size() + numberOfBitsToPad) % 6 != 0)
numberOfBitsToPad++;
if ((numberOfNodes >= k + 1) && last && !beforeLast && isMutipleOfTwo(numberOfNodes))
bitVector.appendBit(0);
// pad to multiples of 6 with one's
bitVector.padR(6, true);
}