Answer 1

Google organizes a universal coding contest called Code Jam in which contestants from over 125 countries take part. The current Google Code Jam contest is underway, and you can prepare yourself to compete in the contest for the next season. 
Here is the link for more information :
https://www.freelancinggig.com/blog/2018/06/27/how-to-prepare-for-google-code-jam-in-2018/