Players join random teams with scoreboard?

Hey,
It's me again. I was wondering if it was possible to have players randomly join teams. For example:
[My Game] 8 players join.
[My Game] 3 players are automatically put onto BLUE team.
[My Game] And 5 players are automatically put onto RED team.

Is this possible? I'm guessing it is, since Hypixel did it.

 

I guess you could create the teams, loop through the player's and randomly put them into team blue or red. If you want to equally distribute them, you could eg. say that the first half is going to blue and the second half to red (maybe also shuffle the array, just to be sure it's really random (use Collections.shuffle(list) if you're using a collection))

 

Could you tell me how to do this? I'm not that familiar with that kind of stuff.

 

http://docs.oracle.com/javase/1.5.0/docs/api/java/util/Collections.html

 

ItsLeoFTW
What are you not familiar with? Teams, algorithms, arrays?