导读 | 这篇文章介绍了C#中对集合排序的三种方式,文中通过示例代码介绍的非常详细。对大家的学习或工作具有一定的参考借鉴价值,需要的朋友可以参考下 |
对集合排序,可能最先想到的是使用OrderBy方法。
class Program { static void Main(string[] args) { IEnumerableresult = GetStudents().OrderBy(r => r.Score); foreach (var item in result) { Console.WriteLine(item.Name + "--" + item.Score); } Console.ReadKey(); } private static List GetStudents() { return new List () { new Student(){Id = 1, Name = "张三",Age = 15, Score = 80}, new Student(){Id = 2, Name = "李四",Age = 16, Score = 70}, new Student(){Id = 3, Name = "赵武",Age = 14, Score = 90} }; } } public class Student { public int Id { get; set; } public string Name { get; set; } public int Age { get; set; } public int Score { get; set; } }
以上,OrderBy返回的类型是IEnumerable
如果想使用List
class Program { static void Main(string[] args) { Listresult = GetStudents(); result.Sort(); foreach (var item in result) { Console.WriteLine(item.Name + "--" + item.Score); } Console.ReadKey(); } private static List GetStudents() { return new List () { new Student(){Id = 1, Name = "张三",Age = 15, Score = 80}, new Student(){Id = 2, Name = "李四",Age = 16, Score = 70}, new Student(){Id = 3, Name = "赵武",Age = 14, Score = 90} }; } } public class Student : IComparable { public int Id { get; set; } public string Name { get; set; } public int Age { get; set; } public int Score { get; set; } public int CompareTo(Student other) { return this.Score.CompareTo(other.Score); } }
让Student实现IComparable
class Program { static void Main(string[] args) { Listresult = GetStudents(); result.Sort(new StudentSorter()); foreach (var item in result) { Console.WriteLine(item.Name + "--" + item.Score); } Console.ReadKey(); } private static List GetStudents() { return new List () { new Student(){Id = 1, Name = "张三",Age = 15, Score = 80}, new Student(){Id = 2, Name = "李四",Age = 16, Score = 70}, new Student(){Id = 3, Name = "赵武",Age = 14, Score = 90} }; } } public class Student { public int Id { get; set; } public string Name { get; set; } public int Age { get; set; } public int Score { get; set; } } public class StudentSorter : IComparer { public int Compare(Student x, Student y) { return x.Score.CompareTo(y.Score); } }
综上,如果我们想对一个集合排序,大致有三种方式:
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