1. because I already solved it in another language
2. because comments under solutions are visible from the dashboard of any user
3. considering the simplicity of the task, giving away such method name is clearly on a spoiler level.

When you don't know, ask for information, rather than downvote people who are explaining to you that you're making a mistake.

How is this spoiler. Why are you checking the comments before trying to do the exercise anyway.

spoiler flag, plz...