How does the Purdue University dorms or residence halls work at Purdue?

Does Purdue University have coed dorms or coed floors? Can you room with someone of the opposite sex?
What are the different types of residential options? like community style or suite style? What are the pros and cons?

They have all kinds.
All male dorms, all female dorm, co-ed with single gender floor, co-ed where the adjacent room might house different gender. They have housing for married students …
They have floors that share common bathroom, they have suites with their own.

Which residence halls are coed floors or the adjacent room is coed?

First Street Towers, Hillenbrand, and Hawkins are the ones that I know of. On Hawkins it’s only certain floors that are co-ed tho.

Are certain dorms correspond with a certain major?

No.