Why does this work correctly when n=0? Why when n=0 the output is ""?

i learn this line from someone's solution.
you can get the same question in "Replace letters" question.
idk is this the name or not, im just paste(ing)
user:- "KenKamau, fenring76, TFeld, ssfellows, jamsyl, Dima806, zatoichi49, thornejosh, mwk48, akar-0 (+ 7)"

Best solution of all posted

heapq is much more performant especially on larger stuff although modern computing power doesn't require it here though.

I don't know if you are trolling or not..

The whole purpose of this exercice is to check if the pupil is able to produce a simple algorithm that sum the smalest numbers in an array, not his/her ability to use a library...

Furthermore, encouraging behavior like this will just lead to the creation of package that are used to check if an integer is even or odd...
... and make applications use that package as dependency !

Don't take me for a fool, I quite understand the advantages of libraries.
But it's not appropriate for this exercice and I can't beleive that I am the first to spot this.

that would be reimplementing something that already exists

why perform an import when it could be achieved without it ?

Thank you very much Anter69. I get it now!

It's a generator expression: similar in form to list comprehensions, but not the same. Here, the end result is the same, only faster.

You can read more about it e.g. here

Aren't list comprehensions supposed to have [ ]

I'm new at this.

Thank you,
Josh

This is why I love codewars so much, I learned a lot from your solution! thanks!

What is intersection?