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A = {a, b, c, d, e, f, g} list = Union[Flatten[Map[Partition[#, 2] &, Permutations[A]], 1]] Extract[list, RandomInteger[{1, Length[list]}]] Change the predicate in the Partition function for different lengths.
f[_] := Extract[list, RandomInteger[{1, Length[list]}]] Array[f, 10] will generate 10 subsets for (pseudo)random pairs.
Could this work for your problem?
A = {a, b, c, d, e, f, g} list = Union[Flatten[Map[Partition[#, 2] &, Permutations[A]], 1]] Extract[list, RandomInteger[{1, Length[list]}]] Change the predicate in the Partition function for different lengths.
Could this work for your problem?
A = {a, b, c, d, e, f, g} list = Union[Flatten[Map[Partition[#, 2] &, Permutations[A]], 1]] Extract[list, RandomInteger[{1, Length[list]}]] Change the predicate in the Partition function for different lengths.
f[_] := Extract[list, RandomInteger[{1, Length[list]}]] Array[f, 10] will generate 10 subsets for (pseudo)random pairs.