Remove_Duplicates_from_Sorted_Array.cpp

int removeDuplicates(vector<int> &arr, int n)
{
    // Write your code here.
    int k = 1;
    for (int i = 0; i < n - 1; i++)
    {
        if (arr[i] != arr[i + 1])
        {
            arr[k++] = arr[i + 1];
        }
    }
    return k;
}