PetscDTEnumSubset#
Get an ordered subset of the integers [0, …, n - 1] from its encoding as an integers in [0, n choose k). The encoding is 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 Parameter#
subset - the jth subset of size k of the integers [0, …, n - 1]
Note#
Limited by arguments such that n choose k can be represented by PetscInt
See Also#
PetscDTSubsetIndex(), PetscDTFactorial(), PetscDTFactorialInt(), PetscDTBinomial(), PetscDTBinomialInt(), PetscDTEnumPerm(), PetscDTPermIndex()
Level#
beginner
Location#
Index of all DT routines
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Index of all manual pages