What does Google Play look for when it's plagiarized?

Question

Android

It so happened that I had to disassemble one application and pull out a couple of ideas from there. I remade them as best I could at my discretion so that the code would not be repeated, but still it partially (10-15%) resembles the author's code. The design of my application is completely different (but the idea is similar). The code will be processed by ProGuard. Suppose the author saw my application and decided to look into the source code and roughly understood what was at stake. Can he send a complaint to Google in such a way that I allegedly partially copied him?
I read a lot about this and, in fact, the changed code (except for renaming variables, functions, etc.) cannot be considered plagiarism.
I would like to hear your opinion on this matter, a lot of effort has been spent on the application and I don’t want to lose it.

Answer 1

processing is recommended on BolgenOS after Popov's Anti-Virus
Google looks at the arguments and facts
, for example, in the code of the bubble sorting algorithm, how not to rename, the bubble will remain,
while clinging to mixing sorting or not is a question ...

Answer 2

There are 2 factors:

1. Make it impossible to restore the source code.
   
2. Change the borrowed source code, keeping the logic of work.
   This does not mean just renaming variables!
   This means changing part of the logic of the conditions and changing/reforming the structure of code areas. For example, make the loop a recursive function, etc.