C#中的Queue.CopyTo()方法
C#中的Queue.CopyTo()方法用于从指定的数组索引处开始，将Queue元素复制到现有的一维数组。
语法
语法如下-
public virtual void CopyTo (Array arr, int index);
上面的参数arr是一维数组，它是从Queue复制的元素的目的地。index参数是开始复制的数组中从零开始的索引。
示例
现在让我们看一个例子-
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);
Console.Write("Count of elements = ");
Console.WriteLine(queue.Count);
Console.WriteLine("Queue...");
foreach(int i in queue) {
Console.WriteLine(i);
}
Console.WriteLine("Does the queue has element 500? = "+queue.Contains(500));
int[] intArr = new int[5];
intArr[0] = 1;
intArr[1] = 2;
intArr[2] = 3;
intArr[3] = 4;
queue.CopyTo(intArr, 1);
Console.WriteLine("\nQueue (Updated)");
foreach(int i in queue) {
Console.WriteLine(i);
}
Console.WriteLine("\nArray (Updated)");
foreach(int i in intArr) {
Console.WriteLine(i);
}
}
}输出结果
这将产生以下输出-
Count of elements = 3 Queue... 100 200 300 Does the queue has element 500? = False Queue (Updated) 100 200 300 Array (Updated) 1 100 200 300 0
示例
现在让我们来看另一个示例-
using System;
using System.Collections.Generic;
public class Demo {
public static void Main() {
Queue<string> queue = new Queue<string>();
queue.Enqueue("Tim");
queue.Enqueue("Jack");
queue.Enqueue("Nathan");
queue.Enqueue("Tom");
queue.Enqueue("David");
queue.Enqueue("Mark");
Console.Write("Count of elements = ");
Console.WriteLine(queue.Count);
Console.WriteLine("Queue...");
foreach(string i in queue) {
Console.WriteLine(i);
}
string[] strArr = new string[10];
strArr[0] = "AB";
strArr[1] = "BC";
strArr[2] = "DE";
strArr[3] = "EF";
queue.CopyTo(strArr, 1);
Console.WriteLine("\nQueue (Updated)");
foreach(string i in queue) {
Console.WriteLine(i);
}
Console.WriteLine("\nArray (Updated)");
foreach(string i in strArr) {
Console.WriteLine(i);
}
}
}输出结果
这将产生以下输出-
Count of elements = 6 Queue... Tim Jack Nathan Tom David Mark Queue (Updated) Tim Jack Nathan Tom David Mark Array (Updated) AB Tim Jack Nathan Tom David Mark
热门推荐
10 财运虎年祝福语简短语
11 单亲爸爸春节祝福语简短
12 狗狗上厕所训练
13 植物种植祝福语简短
14 翻译考试祝福语朋友简短
15 个人周年庆简短祝福语
16 狗狗怎么训练
17 分别祝福语简短搞笑英文
18 生日广州男生祝福语简短