subsequences

Lists all possible partial sequences.

array.subsequences(x, y);
// x: an array
// --> ...subsequences

const array = require('extra-array');

[...array.subsequences([1, 2])];
// [ [ 1, 2 ], [ 2, 1 ] ]

[...array.subsequences([1, 2, 3])];
// [
//   [ 1, 2, 3 ],
//   [ 2, 1, 3 ],
//   [ 1, 3, 2 ],
//   [ 3, 1, 2 ],
//   [ 2, 3, 1 ],
//   [ 3, 2, 1 ]
// ]

references

• Data.List.subsequences: Haskell