The article doesn't exactly simulate what Wade returns, but uses a simpler version. I added a note about it now.

    [1, 1]

The item at index 0 is 1. This means that the item in index 0 of the data ("Hey") has a score of 1. The item at index 1 is 1, meaning that the item at index 1 of the data ("Hello") has a score of 1.

Edit: Your example with Wade isn't working because it ignores the first item in the query ("he") as it is a stop word. Searching for "h" will return both.