Getting the Number of Subsets Within a Set

index.md

Getting the Number of Subsets Within a Set

The number of subsets within a set will always be 2 ^ N, where N is the length of the set.

const a = [1, 2, 3];

console.log(2 ** 3); // 8

Below is the **power set** of the set `a`, or a representation of all the subsets with the set `a`.

/**
 * []
 * [1]
 * [2]
 * [3]
 * [1, 2]
 * [1, 3]
 * [2, 3]
 * [1, 2, 3]
 */

References

• Wikipedia / Power set