Returns List<List<T>>

The list having subsequences.

Examples

import { fromArray, subsequences, toArray } from "./list.ts";
import { assertEquals } from "../deps.ts";

const subSeq = subsequences(fromArray([1, 2, 3, 4]));
const sequences = toArray(subSeq).map((seq) => toArray(seq));
assertEquals(sequences, [
    [],
    [1],
    [2],
    [1, 2],
    [3],
    [1, 3],
    [2, 3],
    [1, 2, 3],
    [4],
    [1, 4],
    [2, 4],
    [1, 2, 4],
    [3, 4],
    [1, 3, 4],
    [2, 3, 4],
    [1, 2, 3, 4],
]);
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