两个java数组删除相同元素

public class Arra {

public static void main(String[] args) {
String[] a={"1","2","3","4","5","6","7","8","9","10"};
String[] b={"11","12","13","14","5","6","7","18","19","20"};
String[] arrResult = arrContrast(a,b);
Integer[] c={};
ArrayList<Integer> arrayList = new ArrayList<Integer>();
  for (String strResult : arrResult) {
arrayList.add(Integer.parseInt(strResult));

}
  Integer[] array = arrayList.toArray(c);
 Arrays.sort(array);
  for (Integer integer : array) {
  System.out.println("输出最后结果------->"+ integer);
}
 
}

//处理数组字符
private static String[] arrContrast(String[] arr1,String[] arr2){
List<String> list=new LinkedList<String>();
for (String str : arr1) {
if (!list.contains(str)) {
list.add(str);
}
}

for (String str : arr2) {
if (list.contains(str)) {
list.remove(str);
}
}

for (int i = 0; i < arr1.length; i++) {
for (int j = 0; j < arr2.length; j++) {
if (arr1[i].equals(arr2[i])) {
arr1[i]="";
arr2[i]="";
}
list.add(arr2[i]);
}
}
Set<String> set=new HashSet<String>();
for (String string : list) {
set.add(string);
}
list.clear();
for (String object : set) {
list.add(object);
}

list.remove(0);
//List<String> subList = list.subList(4, 6);
String[] result={};
return list.toArray(result) /*subList.toArray(result)*/;
}

}