public class Student :IComparable
{
public int Age { get; set; }
public string Name { get; set; }
public int Score { get; set; }
/// <summary>
/// 實現IComparable接口，用Age做比較
/// </summary>
/// <param name="obj">比較對象</param>
/// <returns>比較結果</returns>
public int CompareTo(object obj)
{
if (obj is Student)
{
return Age.CompareTo(((Student)obj).Age);
}
return 1;
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace SortingInCSharp
{
class Program
{
public class Student : IComparable
{
public int Age { get; set; }
public string Name { get; set; }
public int Score { get; set; }
/// <summary>
/// 實現IComparable接口，用Age做比較
/// </summary>
/// <param name="obj">比較對象</param>
/// <returns>比較結果</returns>
public int CompareTo(object obj)
{
if (obj is Student)
{
return Age.CompareTo(((Student)obj).Age);
}
return 1;
}
}
static void Main(string[] args)
{
Student[] students = new Student[]{
new Student(){Age = 10,Name="張三",Score=70},
new Student(){Age = 12,Name="李四",Score=97},
new Student(){Age = 11,Name="王五",Score=80},
new Student(){Age = 9,Name="趙六",Score=66},
new Student(){Age = 12,Name="司馬",Score=90},
};
Console.WriteLine("--------------默認排序輸出--------");
Array.Sort(students);
Array.ForEach<Student>(students, (s) => Console.WriteLine(string.Format("{0}{1,2}歲了，他的分數是{2,3}", s.Name, s.Age, s.Score)));
Console.WriteLine("----------按分數排序輸出------------");
Array.Sort(students, new StudentScoreComparer());
Array.ForEach<Student>(students, (s) => Console.WriteLine(string.Format("{0}{1,2}歲了，他的分數是{2,3}", s.Name, s.Age, s.Score)));
Console.WriteLine("----------按分數排序輸出----------");
Array.Sort(students, (s1, s2) => s1.Score.CompareTo(s2.Score));
Array.ForEach<Student>(students, (s) => Console.WriteLine(string.Format("{0}{1,2}歲了，他的分數是{2,3}", s.Name, s.Age, s.Score)));
Console.Read();
}
public class StudentScoreComparer : IComparer<Student>
{
public int Compare(Student x, Student y)
{
return x.Score.CompareTo(y.Score);
}
}
}
}
