Leetcode#27||Remove Element

public class Solution {    public int removeElement(int[] nums, int val) {        if (nums == null || nums.length == 0) {            return 0;        }                int cnt = 0;                for (int i = 0; i < nums.length; i++) {            if (nums[i] != val) {                nums[cnt++] = nums[i];            }        }                return cnt;    }}