How do I remove certain elements of the block with pointers correctly?

See more:

algorithm

C++11

auto end=pointer;
while(beginning!=end){
    duplicate=0;
    next=beginning+1;
    while(next!=end){
        if(function(*next)==function(*beginning)){
           duplicate++; 
        }
        next++;
    }
    if(duplicate>0)
    end=std::remove(beginning,end,function(*next));

    beginning++;
}

What I have tried:

This snippet is part of a function that looks something like this:
auto DeleteEvery(TipElemenata beginning,TipElemenata &pointer)->typename std::remove_reference<decltype(*beginning)>::type*

beginning is a pointer to the first element of the block(vector, array or such)
end is the pointer that points right after the last element of the block
So, I am supposed to remove all elements function returns the same value for. Now I know that function "remove" from library algorithm doesn't actually remove elements, but instead moves them. That's why I'm using the pointer that "remove" returns to indicate the new end of the block. But it seems that it skips some elements. What am I doing wrong?