odstrani duplikate i broj duplikata

#include <iostream>
#include <vector>

std::vector<int> OdstraniDuplikate(std::vector<int>v)
{
    for(unsigned int i(0); i < v.size(); i++)
    {
        for(unsigned int j(i+1); j < v.size(); j++)
        {
            if(v.at(i) == v.at(j))
            {
                v.erase(v.begin() + j);
                j--;
            }
        }
    }
    return v;
}

int BrojDuplikata(std::vector<int> v)
{
    std::vector<int> temp = OdstraniDuplikate(v);
    int counter(0);
    for(unsigned int i(0); i < temp.size(); i++)
    {
        int counter1(0);
        for(unsigned int j(0); j < v.size(); j++)
        {
            if(temp.at(i) == v.at(j))
                counter1++;
        }
        if(counter1 > 1)
            counter++;
    }
    return counter;
}

int main()
{
    std::vector<int> v1 {7, 10, 4, 2, 4, 4, 5, 6, 7, 3, 9, 1, 8, 6, 7};
    std::vector<int> v2 = OdstraniDuplikate(v1);
    std::cout << BrojDuplikata(v1) << std::endl;
    for(unsigned int i(0); i < v2.size(); i++)
        std::cout << v2[i] << " ";
    return 0;
}