aureooms/js-quicksort

export function dual(partition) {
    const sort = function (compare, a, i, j) {
        if (j - i < 2) return;

        const p = partition(compare, a, i, j);
        const l = p[0];
        const g = p[1];

        sort(compare, a, i, l);
        sort(compare, a, l + 1, g);
        sort(compare, a, g + 1, j);
    };

    return sort;
}