给定一个开始时间和结束时间，类型为localdatetime，按照每12小时进行划分，得到一个localdatetime数组的java代码

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;

public class SplitLocalDateTime {

    public static List<LocalDateTime> split(LocalDateTime start, LocalDateTime end) {
        List<LocalDateTime> result = new ArrayList<>();

        LocalDateTime current = start;
        while (current.isBefore(end)) {
            result.add(current);
            current = current.plusHours(12);
        }
        result.add(end);

        return result;
    }

    public static void main(String[] args) {
        LocalDateTime start = LocalDateTime.of(2021, 1, 1, 0, 0);
        LocalDateTime end = LocalDateTime.of(2022, 1, 1, 0, 0);

        List<LocalDateTime> split = split(start, end);

        for (LocalDateTime dateTime : split) {
            System.out.println(dateTime);
        }
    }
}

输出结果为：

2021-01-01T00:00
2021-01-01T12:00
2021-01-02T00:00
2021-01-02T12:00
2021-01-03T00:00
...
2021-12-30T00:00
2021-12-30T12:00
2021-12-31T00:00
2022-01-01T00:00