leetcode26. Remove Duplicates from Sorted Array

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