So I was able to solve this on here, it's pretty simple, but I wanted to go through and try to write it all out in VSCode. How would I do that? I want to put the triangle and the similar outputs in my file_name_spec.rb file to populate the solutions I need. I have everything as individual arrays (e.g. method_name([1]).to e(1), ([3,5].to e(8)) etc.) I'm trying to do it like this because I am new to programming and looking for work and have been asked to use my prefered editor to solve the problems I've been given in interviews and I'm not yet use to having to build out all the files on my own. In the course I took everything was already laid out for me, all I had to do was run bundle an solve the problem. Any help at all with how I could do this in VSCode would be great, thanks!