How is this a top rated solution?

Brilliant! I have no idea how these people come up with this kind of solution.
High quality solution, in my opinion.

nice, but if you iterate through the vector you will avoid many unnecessary arithmetic in your code

The complexity is terrible. Sorry, even if it is a clear solution, is really bad practice.

this is very unreadable, you know you dont have to use a function library for everything, loops exist and etc.

I'd like to use pNext in replace ofp as the iterative index, because p0 is deemed as the initial value, and we shouldn't change its context meaning.

you could have used greater() in sort function to sort in decending order.

I always forgot about Big O. I have made the same mistake.

O(n^2) Bad time complexity. Should be done in O(n)

Good to know!

I agree that the parameter names are poorly chosen, but instead of comments, you could just change them to more telling ones ;)

Use spoiler flag next time, please.

can someone explain to me what happens in the loop ,thank you in andvance

Howcome this is a clever solution??