You are doing it correctly except change this line
list.add(i, new Integer(nums(i))); // <-- Expects a method
to
list.add(i, new Integer(nums[i]));
or
list.add(i, nums[i]); // (autoboxing) Thanks Joshua!
문제
I am trying to add an array of integers to a Linked List. I understand that primitive types need a wrapper which is why I am trying to add my int elements as Integers. Thanks in advance.
int [] nums = {3, 6, 8, 1, 5};
LinkedList<Integer>list = new LinkedList<Integer>();
for (int i = 0; i < nums.length; i++){
list.add(i, new Integer(nums(i)));
Sorry - my question is, how can I add these array elements to my LinkedList?
해결책
You are doing it correctly except change this line
list.add(i, new Integer(nums(i))); // <-- Expects a method
to
list.add(i, new Integer(nums[i]));
or
list.add(i, nums[i]); // (autoboxing) Thanks Joshua!
다른 팁
If you use Integer
array instead of int
array, you can convert it shorter.
Integer[] nums = {3, 6, 8, 1, 5};
final List<Integer> list = Arrays.asList(nums);
Or if you want to use only int[] you can do it like this:
int[] nums = {3, 6, 8, 1, 5};
List<Integer> list = new LinkedList<Integer>();
for (int currentInt : nums) {
list.add(currentInt);
}
And use List
instead LinkedList
in the left side.