99 Elm Problems/Problem 27

Group the elements of a set into disjoint subsets.27.a) In how many ways can a group of 9 people work in 3 disjoint subgroups of 2, 3 and 4 persons? Write a function that generates all the possibilities and returns them in a list.27.b) Generalize the function to allow group sizes to be specified.

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Example in Elm:

Result:

Solutions