Upon completion, run the following commands

$ git add .
$ git commit -m "done"
$ git push origin master

Navigate to your repo and create a Pull Request -from your master branch to the original repository master branch.

In the Pull request name, add your name and last names separated by a dash "-"

output:
         x
        x x
       x x x
      x x x x
    x x x x x x

output:
    x
    xx
    xxx
    xxxx
    xxxxx

• Feel free to read more from Mozilla about JavaScript fundamentals.

• w3schools