While we are more than willing to help those that are stuck, that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for us to do it all for you.
So we need you to do the work, and we will help you when you get stuck. That doesn't mean we will give you a step by step solution you can hand in!
Start by explaining where you are at the moment, and what the next step in the process is. Then tell us what you have tried to get that next step working, and what happened when you did.
Getting code from SO is not a good way to learn anything: and if you can't understand it, then that's probably because you don't know how to write code yet. Which is a skill, and like all skills it only develops by practice: you can watch people riding bicycles all you like, but that won't teach you to ride one yourself - you are going to fall off until you develop the skill and body reflexes to stay upright. Same thing with coding: read codee all you like, you still won't know how to write it. Try to write it and you learn the skill.
If you are having problems getting started at all, then this may help: How to Write Code to Solve a Problem, A Beginner's Guide