Question

//人员结构

struct Person {
            var id: Int
            var age: Int
            var nPerson: [Person]
        }

// Person的数组类型

 var persons = [

        Person(id: 123, age: 23, nPerson: []),
        Person(id: 421, age: 45, nPerson: [

            Person(id: 100, age: 13, nPerson: [
            Person(id: 5, age: 23, nPerson: []),
            Person(id: 112, age: 89, nPerson: []),
            ]),
            Person(id: 42, age: 33, nPerson: []),
            Person(id: 112, age: 73, nPerson: []),
            Person(id: 126, age: 23, nPerson: []),

        ]),

        Person(id: 343, age: 5, nPerson: [

            Person(id: 22, age: 109, nPerson: []),
            Person(id: 421, age: 102, nPerson: []),
            Person(id: 141, age: 12, nPerson: []),
            Person(id: 136, age: 54, nPerson: []),

        ])

    ]

我在人Person和id中有一个对象nPerson，而nPerson是Person的一种。我想按ID对数组进行排序，这样排序也可以在nPerson数组内进行。

Answer 1

您可以使用Swift内置排序功能对此进行存档。

let sortedPersons = persons.sorted {$0.id < $1.id}.map { (person) -> Person in

         var tempPerson = person
         let shortednPersons = (person.nPerson).sorted { $0.id < $1.id }
         tempPerson.nPerson = shortednPersons

         return tempPerson

}

SwiftUI按ID对自定义对象数组进行排序

1 个答案: