RosettaCodeData/Task/Combinations-with-repetitions/Mathematica/combinations-with-repetitions-2.math
Ingy döt Net d066446780 langs a-z
2013-04-10 22:43:41 -07:00

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Text

CombinWithRep[S_List, k_] := Module[{occupation, assignment},
occupation =
Flatten[Permutations /@
IntegerPartitions[k, {Length[S]}, Range[0, k]], 1];
assignment =
Flatten[Table[ConstantArray[z, {#[[z]]}], {z, Length[#]}]] & /@
occupation;
Thread[S[[#]]] & /@ assignment
]
In[2]:= CombinWithRep[{"iced", "jam", "plain"}, 2]
Out[2]= {{"iced", "iced"}, {"jam", "jam"}, {"plain",
"plain"}, {"iced", "jam"}, {"iced", "plain"}, {"jam", "plain"}}