Bug Report for remove-duplicates-from-sorted-array

[Anfebule]

Bug Report for https://neetcode.io/problems/remove-duplicates-from-sorted-array

Please describe the bug below and include any steps to reproduce the bug or screenshots if possible.

This is my simplest proposed solution in Java for this problem:

class Solution {
    public int removeDuplicates(int[] nums) {
        Set<Integer> arraySet = new HashSet();
        for (int num: nums){
            arraySet.add(num);
        }
        return arraySet.size();
    }
}

The platform returns the solution is incorrect as follows:
Input:
nums=[1,1,2,3,4]

Your Output:
[1,1,2,3]

Expected output:
[1,2,3,4]

Tested it out in an IDE, the result is according to the expected output, as by definition a Set doesn't allow duplicated values.