Ranking and unranking
3 methods in the atlas attack this one problem. They are rivals: each wins something the others do not.
Phrasings that mean this problem
Permutation rankingCombinatorial ranking
combinatorial-enumeration
- Factorial number systemLehmer code rankingstandardcombinatorial-enumeration
- Myrvold-Ruskey rankingstandalonespecialistcombinatorial-enumeration
- Ranked tree traversalstandalonespecialistcombinatorial-enumeration