26.remove-duplicates-from-sorted-array.cpp

class Solution {
public:
    int removeDuplicates(vector<int>& nums) {

        int k = 0;
        for (int i = 0; i < nums.size(); ++i)
        {
            if (k == 0 || nums[k - 1] != nums[i])
            {
                nums[k++] = nums[i];
            }
        }

        return k;
    }
};