union-find/non-contiguous

export const union = (a, b) => {
    a.back.next = b;
    a.back = b.back;

    for (let it = a.next; it !== b; it = it.next) {
        it.back = b.back;
    }

    return a;
};

export {
    LinkedListNode as Node,
    linkedlistbackfind as find,
    linkedlistmakeset as makeset,
} from '../fundamentals/index.js';