# PetscDTEnumSubset
Split the integers [0, ..., n - 1] into two complementary ordered subsets, the first subset of size k and being the jth subset of that size in lexicographic order. 
## Input Parameters

- ***n -*** a non-negative integer (see note about limits below)
- ***k -*** an integer in [0, n]
- ***j -*** an index in [0, n choose k)



## Output Parameters

- ***perm -*** the jth subset of size k of the integers [0, ..., n - 1], followed by its complementary set.
- ***isOdd -*** if not NULL, return whether perm is an even or odd permutation.



## Note
Limited by arguments such that n choose k can be represented by `PetscInt`




## See Also
 `PetscDTEnumSubset()`, `PetscDTSubsetIndex()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/include/petscdt.h.html#PetscDTEnumSubset">include/petscdt.h</A>


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