自定义List的sort方法比较器
1. 代码示例
2. 注意事项
1. 代码示例
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace SortTest
{
class Program
{
static void Main(string[] args)
{
List<Person> people = new List<Person>();
people.Add(new Person(50, "Fred"));
people.Add(new Person(30, "John"));
people.Add(new Person(26, "Andrew"));
people.Add(new Person(24, "Xavier"));
people.Add(new Person(5, "Mark"));
people.Add(new Person(6, "Cameron"));
Console.WriteLine("Unsorted list");
people.ForEach(delegate(Person p)
{
Console.WriteLine(String.Format("{0} {1}", p.name, p.age));
});
// Find the young
Console.WriteLine("Find the young");
List<Person> young = people.FindAll((Person p) =>
{
return p.age < 25;
});
young.ForEach((Person p) =>
{
Console.WriteLine(String.Format("{0} {1}", p.name, p.age));
});
// Sort by name
Console.WriteLine("Sorted list, by name");
people.Sort((Person p1, Person p2) =>
{
return p1.name.CompareTo(p2.name);
});
people.ForEach(delegate(Person p)
{
Console.WriteLine(String.Format("{0} {1}", p.name, p.age));
});
// Sort by age
Console.WriteLine("Sorted list, by age");
people.Sort((Person p1, Person p2) =>
{
return p1.age.CompareTo(p2.age);
});
people.ForEach(delegate(Person p)
{
Console.WriteLine(String.Format("{0} {1}", p.name, p.age));
});
Console.ReadKey();
}
}
}
2. 注意事项
sort方法原型public void Sort(Comparison<T> comparison)， Comparison泛型原型public delegate int Comparison<T>(T x, T y);
