java切分List

public class MyListUtil {

    public static <T> List<List<T>> averageAssign(List<T> source, int n) {
        List<List<T>> result = new ArrayList<>();
        //(先计算出余数)
        int remainder = 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<T> value;
            if (remainder > 0) {
                value = source.subList(i * number + offset, (i + 1) * number + offset + 1);
                remainder--;
                offset++;
            } else {
                value = source.subList(i * number + offset, (i + 1) * number + offset);
            }
            result.add(value);
        }
        return result;
    }

}

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