Program displays a list of numbers.
 For example:

> 
> 1, 3, 5, 3, 4, 3,
> 
> 
> 

I need to be like this:

> 
> 1, 3, 5, 3, 4, 3
> 
> 
> 

I tried the `if/else` statement, but its no good.

```
s.push_back(0);
cout << "s: ";
cout << 0 << ", ";
s.push_back(v[0]);
cout << s.back() << ", ";

for(int i=2; i<=10; i++) {
    s.push_back(alpha * v[i-1] + (1 - alpha) * s.back());
    if (i == s.back() - 1)
        cout << s.back() << endl;
    else
        cout << s.back() << ", " << "";

```

I'm getting the correct output. Just having trouble with getting rid of the last comma.