C# List排序最快方法算法比较_List排序方法实现

前几天介绍过一篇Java排序的算法、今天给大家简单的介绍一下在C#中List的排序的相关算法并比较一下、希望对大家有用

下面介绍各种List的sort的用法与比较、首先、我们建一个People的实体、有name、age、sex的属性、我们要排序的字段是年龄age

新建一个实体类

public class People
{
    public string name { get; set; }
    public int age { get; set; }
    public string sex { get; set; }
}

新建list的数据

List<People> peoples = new List<People>()
{
    new People() {age = 11, name="alun", sex = "男"},
    new People() {age=25, name = "陈敬桃", sex = "男"},
    new People() {age=9, name = "惠安", sex = "男"},
    new People() {age = 45, name = "小票", sex = "女"},
    new People() {age=3, name = "晓鸥", sex = "女"},
    new People() {age=70, name = "望谟", sex = "男"}
};

 

1、使用 IComparer

public class PeopleAgeComparer : IComparer<People>
{
    public int Compare(People p1, People p2)
    {
        return p1.age.CompareTo(p2.age);
    }
}

peoples.Sort(new PeopleAgeComparer());

可以看到第一种方法比价麻烦、要新建一个新的类来做

2、使用委托来排序

peoples.Sort(delegate (People p1, People p2) { 
	return p1.age.CompareTo(p2.age); 
});

看委托的方式很方便、不用新建类这么麻烦

 

3、使用Lambda表达式来排序

peoples.Sort( (a, b) => a.age.CompareTo(b.age) );

目测排序有这3种方法、个人觉得还是Lambda表达式使用得方便、大家可以根据自己的需要自行选择