powerset javascript Code Snippet in 2024
mathalgorithmbeginner
Last Updated: 14 December 2024
Returns the powerset of a given array of numbers.
- Use
Array.prototype.reduce()combined withArray.prototype.map()to iterate over elements and combine into an array containing all combinations.
const powerset = arr =>
arr.reduce((a, v) => a.concat(a.map(r => r.concat(v))), [[]]);powerset([1, 2]); // [[], [1], [2], [1, 2]]
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