Last name first

Problem

On the roll call the names go the other way around: the last name, a comma, a space and the first name. Write a function that takes the first name and the last name separately —sometimes with extra spaces on the sides— and returns the roll call line: with " Ann " and "Smith" you return "Smith, Ann". Upper and lower case stay as they arrived.

Examples

• "Ann", "Smith" → "Smith, Ann"

• " Peter ", "Brown" → "Brown, Peter"

• "Grace", " Miller " → "Miller, Grace"

Besides these, the challenge has hidden tests that are revealed when you submit your solution.

You start with this

def roll_call(name, surname):
    pass

function rollCall(name, surname) {
}