You aren't supposed to go onto stackoverflow and blindly cut and paste the first solution you find into your own code.

If you look at several related questions on stackoverflow, read the solutions and comments, then take the time to understand how they work, why upvoted solutions are good, and why the downvoted solutions are bad, you will learn a great deal.

It is a fantastic resource, if you are willing to put the effort in and use it as a learning tool.