Storage [Q] How to root Sprint Sg3 without a computer?

Currently running version 4.3 stock and i have a problem, my charging port is currently damage so i can't plug it in to the computer to root. Is there some kind of way i can root my device by flashing some kind of custom recovery without using a computer or something. PLEASE HELP ME IF YOU HAVE ANY IDEA HOW I CAN ROOT THIS DEVICE CAUSE I FOUND NOTHING