leetcode 26. Remove Duplicates from Sorted Array

class Solution {
public:
    int removeDuplicates(vector<int>& nums) {
        int l=0;
        for(int i=0;i<nums.size();i++){
            if(l == 0 || nums[i] != nums[l-1] ){
                nums[l++] = nums[i];
            }
        }
        return l;
    }
};