Answer 1

Hi I Am Noob :) , as this question was asked and answered many times, you can use code playground and search there. Thanks!

Answer 2

Please stop this is duplicated questions.
Use the search bar before asking.
https://www.sololearn.com/discuss/1331924/?ref=app
https://www.sololearn.com/discuss/2229443/?ref=app
https://www.sololearn.com/discuss/2596276/?ref=app
https://www.sololearn.com/discuss/1876473/?ref=app
https://www.sololearn.com/discuss/156120/?ref=app
https://www.sololearn.com/discuss/2088675/?ref=app