Coding bootcamps exists to help people learn to code much quicker than going back to university to do a four year degree. In many cases they are also cheaper than a degree, depending on the country.
Coding bootcamps offer a structured program for learning to code. Added benefits include having a peer group for support just like college students. Also coding bootcamps have instructors that can give one-to-one feedback with students. Check out www.bootcampindex.com for more info.