如何组合来自不同类的数组并按字母顺序输出它们？

编程问答 2022-05-14

问题描述

class Family{
    let brother: [String]? = ["Maksim","Egor","Ivan"]
    let sister: [String]? = ["Anna","Dasha","Masha"]
    let uncle: [String]? = ["Ura","Sergei","Vasia"]
    let aunt: [String]? = ["Lena","Vika"]
}
 
class Animals {
    let animals: [String]? = ["Cow","Chicken","Dog","Cat"]
}

class Plants {
    let plants: [String]? = ["Sunflower","Rose","Tulips"]
}

我想过将所有内容添加到类中并使用它来输出它，但我不能。还是不行

class All{
    let fam: Family? = Family()
    let an: Animals? = Animals()
    let pl: Plants? = Plants()
}
let all = All()

解决方法

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