Swift 数组对象排序

var personList: [Person] = []

 func setupData() -> Void {
        for _ in 0...20 {
            let index = Int(arc4random() % 100)
            
            let persion = Person();
            persion.name = ("name\(index)")
            persion.age = index
            persion.addrss = ("重庆渝中区大坪街道\(index)")
            personList.append(persion);
        }
   }

print("------数组排序前:------");
 for person in personList {
     print("name:\(person.name)      age:\(person.age)       address:\(person.addrss)")
 }
personList.sort { $0.age > $1.age }

print("------数组排序前:------");
 for person in personList {
     print("name:\(person.name)      age:\(person.age)       address:\(person.addrss)")
 }

 func sorterByPersonAgeDESC(p1:Person, p2:Person) -> Bool {
      return p1.age > p2.age
  }

personList.sort(by: sorterByPersonAgeDESC)