我有 3 个数组.我想合并 3 个数组并创建一个显示所有合并整数的新数组.我希望这个新数组采用循环方式.
I have 3 arrays. I want to merge the 3 arrays and create a new array that shows all the merged integers. I would like this new array to be in round robin style.
示例输入:
array = {arr1 = 1, 2, 3, arr2 = 4, 5, 6, arr3 = 7, 8, 9}示例输出:
arr4 = 1, 4, 7, 2, 5, 8, 3, 6, 9我应该使用此功能，但我不明白如何使用 listOfLists:
I'm supposed to use this function but I don't understand how can I use a listOfLists:
String roundRobin(List<List<Integer>>listOfLists) { 推荐答案我认为循环输入和获取元素并将元素添加到数组列表中很容易理解.
I think just loop input and get element and add element to a list of array is easy to understand.
public static List<Integer> roundRobin(List<List<Integer>> listOfLists) { if (listOfLists == null || listOfLists.isEmpty()) { return new ArrayList<>(); } int maxLength = -1; for (List<Integer> list : listOfLists) { if (list.size() > maxLength) { maxLength = list.size(); } } List<Integer> result = new ArrayList<>(maxLength * listOfLists.size()); for (int i = 0; i < maxLength; i++) { for (List<Integer> list : listOfLists) { if (i < list.size()) { result.add(list.get(i)); } } } return result; }