简单变量在集合中的排序

• String类型输出排序

namespace DemoDM
{
    class Program
    {
        static void Main(string[] args)
        {
            List<string> stuList = new List<string>() { "王勇", "李超", "高新", "赵芳", "雯雯" };
            foreach(string item in stuList)
            {
                Console.WriteLine(item);
            }
            Console.WriteLine("-------排序后输出结果-------");
            stuList.Sort();
            foreach(string item in stuList)
            {
                Console.WriteLine(item);
            }
            Console.ReadLine();
        }
    }
}

排序

• 引用类型输出排序
  新建Student类及接口

namespace DemoDM
{
    class Student:IComparable<Student>
    {
        public int StudentId { get; set; }
        public string StudentName { get; set; }
        public int StudentAge { get; set; }

        public int CompareTo(Student other)
        {
            return other.StudentAge - this.StudentAge;//按照年龄降序
        }
    }
}

排序输出

namespace DemoDM
{
    class Program
    {
        static void Main(string[] args)
        {
            List<Student> stuList = new List<Student>()
            {
                new Student() { StudentAge = 22, StudentId = 1001, StudentName = "小王" },
                new Student() { StudentAge = 23, StudentId = 1002, StudentName = "小李" },
                new Student() { StudentAge = 32, StudentId = 1003, StudentName = "小朱" },
                new Student() { StudentAge = 29, StudentId = 1004, StudentName = "厉雯" },
                new Student() { StudentAge = 21, StudentId = 1005, StudentName = "小孙" },
            };
            foreach (Student item in stuList)
            {
                Console.WriteLine(item.StudentAge + "\t" + item.StudentId + "\t" + item.StudentName);
            }
            Console.WriteLine("-------排序后输出结果-------");
            stuList.Sort();
            foreach (Student item in stuList)
            {
                Console.WriteLine(item.StudentAge + "\t" + item.StudentId + "\t" + item.StudentName);
            }
            Console.ReadLine();
        }
    }
}

结果