string rotate( string s ) {
replace(s.begin(), s.end(), '/', ' ');
ISS iss(s);
int hh, mm;
iss >> hh >> mm;
OSS oss;
oss << setw(2) << setfill('0') << mm << "/" << setw(2) << setfill('0') << hh;
return oss.str();
}
string convert( VS list ) {
OSS oss;
for ( VS::iterator it_i = list.begin(); it_i != list.end(); ++ it_i ) {
oss << *it_i;
if ( it_i + 1 != list.end() )
oss << " ";
}
return oss.str();
}
/**
* Print the transformation into a string.
**/
std::string toString(bool details = false) const
{
const size_t l = _perm.size();
if (l == 0) return "Permutation[empty]";
OSS os;
os << "Permutation[0," << (l - 1) << "]";
if (details)
{
os << "\n";
for (int i = 0;i < (int)l;i++) { os << i << "\t -> \t" << _perm[i] << "\n"; }
}
return os.str();
}
string LTOS(const LL x) {OSS ss;ss << x;return ss.str();}