16 lines
318 B
Swift
16 lines
318 B
Swift
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func powersetFrom<T>(_ elements: Set<T>) -> Set<Set<T>> {
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guard elements.count > 0 else {
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return [[]]
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}
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var powerset: Set<Set<T>> = [[]]
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for element in elements {
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for subset in powerset {
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powerset.insert(subset.union([element]))
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}
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}
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return powerset
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}
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// Example:
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powersetFrom([1, 2, 4])
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