What's wrong with my array?

Question

Please check the code
https://code.sololearn.com/W0z7zI82F3Kp/?ref=app

Answer 1

Quick Answer :

Push a copy of z instead, with

z.slice()

https://code.sololearn.com/WLD9cbMKKPMv/?ref=app

Explanation :

Because you are adding the reference of z instead of the value of z to a,

that's why when z changes, all elements of a is changed.

https://www.sololearn.com/post/136566/?ref=app

https://www.sololearn.com/post/136211/?ref=app

More in :
https://code.sololearn.com/WKKkpq0efxai/?ref=app

Answer 2

Gordon thank you very much, man!