java 按照指定大小拆分List

/**
     * 将一个list均分成n个list,主要通过偏移量来实现的
     *
     * @param source
     * @return
     */
    public static  List> averageAssign(List source, int n) {
        List> result = new ArrayList<>();
        //(先计算出余数)
        int remaider = source.size() % n;
        //然后是商
        int number = source.size() / n;
        //偏移量
        int offset = 0;
        for (int i = 0; i < n; i++) {
            List value;
            if (remaider > 0) {
                value = source.subList(i * number + offset, (i + 1) * number + offset + 1);
                remaider--;
                offset++;
            } else {
                value = source.subList(i * number + offset, (i + 1) * number + offset);
            }
            result.add(value);
        }
        return result;
}