Function subsequences

subsequences<T>(list: List.List<T>): List.List<List.List<T>>

Creates subsequences of the list.

Type Parameters

T

Parameters

list: List.List<T>
The source list.

Returns List.List<List.List<T>>

The list having subsequences.

Examples

Example

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