分割成ArrayList中根据用户输入多的ArrayList [英] Split ArrayList into Multiple ArrayLists depending on user input

问题描述

我有这个程序：

public static void main(String[] args){
    System.out.println("Enter number of nodes");
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    for(int i=0;i<=n;i++)
    {
        nodes.add(i);
    }

    System.out.println(nodes);
    System.out.println("How many subnetworks you want? Enter Small(10), Med(30), Large(50)");
    small = sc.nextInt();
    med = sc.nextInt();
    large = sc.nextInt();
    System.out.println("Small = " + small + "med" + med + "large" + large);

现在取决于每一个整数的小型，中型和大型并考虑倍数值，我想ArrayList的分割成不同的ArrayList或数组。
例如，小= 100），MED（= 50，大= 10应该分头主要的ArrayList到每一个大小为10 100小的ArrayList，每个尺寸30和10大的ArrayList每个大小为50的50 MED的ArrayList。
 拆分后，我想一些属性分配到sublsits元素。而且我不知道是否应该数组列表或数组或其他任何东西。

Now depending on value of small, medium and large and considering multiples of each of these integers, I want to split ArrayList into different arraylists or array. For example, small = 100, med = 50, large = 10 should split main arraylist into 100 small arraylists each of size 10, 50 med arraylists each of size 30 and 10 large arraylists each of size 50. After the split, I want to assign some properties to elements in sublsits. And I am not sure whether it should be arraylist or array or anything else.

推荐答案

您可以使用拆分列表功能。

You can use split list function.

private static List<List<Integer>> splitAndReturn(List<Integer> numbers,
        int size) {
    List<List<Integer>> smallList = new ArrayList<List<Integer>>();
    int i = 0;
    while (i + size < numbers.size()) {
        smallList.add(numbers.subList(i, i + size));
        i = i + size;
    }
    smallList.add(numbers.subList(i, numbers.size()));
    return smallList;
}

该函数将返回数组的ArrayList大小为尺寸的每个原始。
所以，如果你需要100数组大小为10，然后

The function will return an arrayList of arrays with each raw of size size. So if you need 100 array with size 10, then

splitAndReturn(yourList, 10).subList(0, 100);

将让你的阵列的列表。

will get you the list of arrays.

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