Prime Factors: Step 6

We’re working on passing the first four tests, for n=1 through 4.

Remember, this is the un-refactored version. Just get into the green state. We’ll refactor shortly.

static std::vector<int> Of(int n)
{
    if (n == 1)
        return {};
    if (n == 4)
        return {2, 2};
    return {n};
}

This is probably the simplest code that passes the tests, but it needs work: we can’t keep going on like this, or we’ll just be special-casing everything.

So, let’s start refactoring. First, let’s add a std::vector<int> v that we populate with the appropriate values. Let’s do just that much first.

Then click Next.