求数组中两个数和为10的数字组

public static void main(String[] args) {
Integer[] aaa=new Integer[]{1,2,3,4,5,6,7,8,9,5,6,3,4,2,6,5};
ArrayList<Integer> arr=new ArrayList<>();
for(int i=0;i<aaa.length-1;i++){
for(int j=1;j<aaa.length;j++){
if(aaa[i]+aaa[j]==10&&!arr.contains(aaa[i])&&!arr.contains(aaa[j])){
arr.add(aaa[i]);
}
}
}
for(int i=0;i<arr.size();i++){
System.out.println(arr.get(i)+","+(10-aaa[i]));
}
}