import java.util.ArrayList; import java.util.Arrays; import java.util.List; public class KuGou { public static void main(String[] args) { int arr1[]={4,3,2,1}; new KuGou().split(arr1); } private List<integer> list; private boolean flag; private int target; private int arr[]; public boolean split(int arr1[]){ list=new ArrayList<integer>(arr1.length); flag=false; Arrays.sort(arr1); arr=arr1; int sum=sum(arr1); if (sum%2!=0) return false; target=sum/2; fun(0); if (flag==true){ List<integer> arr2=new ArrayList<integer>(arr1.length); List<integer> arr3=new ArrayList<integer>(arr1.length); for (int i=0;i<arr1.length> l){ int sum=0; for (Integer i:l){ sum+=i; } return sum; } }</arr1.length></integer></integer></integer></integer></integer></integer>