Combinatorica`
Combinatorica`
UnrankSubset
UnrankSubset[n,l]
gives the 
subset of list 
, listed in some canonical order.
更多信息和选项
- To use UnrankSubset, you first need to load the Combinatorica Package using Needs["Combinatorica`"].
UnrankSubset[n,l]
gives the subset of list , listed in some canonical order.