具有示例的C#Queue.TrimExcess()方法
如果该数量小于当前容量的90％，则使用C#中的Queue.TrimExcess()方法将容量设置为Queue<T>中的实际元素数量。
语法
public void TrimExcess ();
示例
using System;
using System.Collections.Generic;
public class Demo {
public static void Main() {
Queue<int> queue = new Queue<int>();
queue.Enqueue(100);
queue.Enqueue(200);
queue.Enqueue(300);
queue.Enqueue(400);
queue.Enqueue(500);
queue.Enqueue(600);
queue.Enqueue(700);
queue.Enqueue(800);
queue.Enqueue(900);
queue.Enqueue(1000);
Console.WriteLine("Queue...");
foreach(int i in queue) {
Console.WriteLine(i);
}
Console.WriteLine("Count of elements in the Queue = "+queue.Count);
queue.Clear();
queue.TrimExcess();
Console.WriteLine("Count of elements in the Queue [Updated] = "+queue.Count);
}
}输出结果
100 200 300 400 500 600 700 800 900 1000 Count of elements in the Queue = 10 Count of elements in the Queue [Updated] = 0
示例
using System;
using System.Collections.Generic;
public class Demo {
public static void Main() {
Queue<string> queue = new Queue<string>();
queue.Enqueue("Gary");
queue.Enqueue("Jack");
queue.Enqueue("Ryan");
queue.Enqueue("Kevin");
queue.Enqueue("Mark");
queue.Enqueue("Jack");
queue.Enqueue("Ryan");
queue.Enqueue("Kevin");
Console.Write("Count of elements = ");
Console.WriteLine(queue.Count);
Console.WriteLine("Does the queue has element Jack? = "+queue.Contains("Jack"));
queue.TrimExcess();
queue.Clear();
Console.Write("Count of elements (updated) = ");
Console.WriteLine(queue.Count);
}
}输出结果
Count of elements = 8 Does the queue has element Jack? = True Count of elements (updated) = 0