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Cracking a coding test interview - breakdown

Babacar Cissé Dia
passionate about technology especially in WEB (front end and back end), desktop and mobile application from native to hybrid one. ML is the new black
・2 min read

Cracking a coding test interview

Coding interviews are always for me an opportunity to learn and grow which is why I wanted to share you my thought process for this one I found this morning at

What I saw when I visited the page
home page

I revisited the application form

I wanted to know what technology was used for this
server discovery

I was happy to find out it was ruby

And the hint was suggesting I should try json and I did. If you know ruby on rails then it comes to you naturally

But now I am in front of the page with this json payload. It says follow so I followed the link.
request id json

request twice

Then I said wait...
but wait...

It was too good to be true. So you have two choices:

  • either you go follow one by one the id chain
  • or you can just write a bit of function like I did Alt Text

On the last page: The holy grale

You could have go for an iterative version with a loop

Wrap up

I guess at RainForest they will have to make a new test since you know the answer for this one.
Overall I think it way simple enough. We just needed to take each problem one at the time and yeah every beginner can do it too.

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