I made it clearer now I believe. I also included an image.

If this is no longer an issue could you mark as solved please? Thank you.

I think that the explanation of 'anchor' is confusing.

I tried it... no difference.
Thanks for your suggestion!

I have never used Java before (I wrote the JavaScript version of the code), but might it have something to do with the fact that isTriangleNumberDP is using an int in the for loop instead of a Long?

Hi!
Everything seems to be working, but still i get:

RandomTests(StatTest)
****** Random tests ******
expected: but was:

I don't know what the test input is, so i don't know what to optimize, what to work on.
I'm am working in an ide, there everything is fine. I can't figure this one out :)

This was the first time ever I worked with streams and lambdas. In fact after seeing this kata I decided to start learning them.

I found minor issues regarding the description. Exercise 2 wasn't clear at all for me. After completing it I still think, that the descriptions needs a rework.