080. Remove Duplicates from Sorted Array II.cpp

class Solution {
public:
    int removeDuplicates(vector<int>& nums) {
        if(nums.size() < 3) return nums.size();
        int i = 2, j = 2;
        while(j < nums.size())
            if(nums[j] > nums[i - 2]) nums[i++] = nums[j++];
            else j++;
        return i;
    }
};