26_Remove Duplicates from Sorted Array

/*Runtime: 0 ms, faster than 100.00% of Java online submissions for Remove Duplicates from Sorted Array.
Memory Usage: 41.1 MB, less than 90.75% of Java online submissions for Remove Duplicates from Sorted Array
*/

class Solution {
    public int removeDuplicates(int[] nums) {
         if (nums.length == 0) 
             return 0;
    int i = 0;
    for (int j = 1; j < nums.length; j++) {
        if (nums[j] != nums[i]) {
            i++;
            nums[i] = nums[j];
        }
    }
    return i + 1;
    }
}