编写代码实现以下功能：
（1）定义结构体，保存学生信息，包括姓名、年龄、性别、学号、班级。其中性别是枚举类型，枚举值为Male和Female。结构体中包括方法description，该方法打印输出上述学生信息。
（2）创建10个学生对象，保存在字典中，字典以学生学号为主键key，遍历字典并输出所有学生信息。

enum sex{
    case man
    case woman
}

struct Student {
    var name : String
    var age:Int
    var sex:sex
    var id:String
    var Sclass:String
    
    func description(){
        print(name,age,sex,id,Sclass)
    }
}

var stu1=(name:"阿一",age:20,sex:sex.man,id:"201601",Sclass:"2班")
var stu2=(name:"阿二",age:19,sex:sex.woman,id:"201602",Sclass:"2班")
var stu3=(name:"阿三",age:21,sex:sex.man,id:"201603",Sclass:"2班")
var stu4=(name:"阿四",age:20,sex:sex.woman,id:"201604",Sclass:"2班")
var stu5=(name:"阿五",age:23,sex:sex.man,id:"201605",Sclass:"2班")
var stu6=(name:"阿六",age:20,sex:sex.man,id:"201606",Sclass:"2班")
var stu7=(name:"阿七",age:24,sex:sex.woman,id:"201607",Sclass:"2班")
var stu8=(name:"阿八",age:20,sex:sex.man,id:"201608",Sclass:"2班")
var stu9=(name:"阿九",age:22,sex:sex.man,id:"201609",Sclass:"2班")
var stu10=(name:"阿十",age:20,sex:sex.man,id:"201610",Sclass:"2班")


var dic = [201601:stu1,201602:stu2,201603:stu3,201604:stu4,201605:stu5,201606:stu6,201607:stu7,201608:stu8,201609:stu9,201610:stu10]

for (_,stu) in dic{
    print(stu)
}