Remove_Duplicates_from_Sorted_Array.cpp

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