Java:将List拆分为两个子列表？

在Java中，将List拆分为两个子列表可以通过以下几种方法实现：

使用subList()方法：

List<String> originalList = Arrays.asList("A", "B", "C", "D", "E");
int midpoint = originalList.size() / 2;
List<String> firstSubList = originalList.subList(0, midpoint);
List<String> secondSubList = originalList.subList(midpoint, originalList.size());

使用Lists.partition()方法（需要导入Guava库）：

List<String> originalList = Arrays.asList("A", "B", "C", "D", "E");
List<List<String>> twoSubLists = Lists.partition(originalList, originalList.size() / 2);
List<String> firstSubList = twoSubLists.get(0);
List<String> secondSubList = twoSubLists.get(1);

使用循环遍历原始列表，将元素添加到新的子列表中：

List<String> originalList = Arrays.asList("A", "B", "C", "D", "E");
int midpoint = originalList.size() / 2;
List<String> firstSubList = new ArrayList<>();
List<String> secondSubList = new ArrayList<>();
for (int i = 0; i< originalList.size(); i++) {
    if (i < midpoint) {
        firstSubList.add(originalList.get(i));
    } else {
        secondSubList.add(originalList.get(i));
    }
}

这三种方法都可以将原始列表拆分为两个子列表。请注意，这些方法不会修改原始列表。如果需要修改原始列表，请使用其他数据结构，例如数组。