LinkedList < T > .Contains(T)方法用于检查值是否在LinkedList
句法:
public bool Contains (T value);
在此,值是要在LinkedList < T >中定位的值。对于引用类型,该值可以为null。
返回值:如果在LinkedList中找到值,则此方法返回True ,否则返回False 。
下面给出了一些示例,以更好地理解实现:
范例1:
// C# code to check if a
// value is in LinkedList
using System;
using System.Collections;
using System.Collections.Generic;
class GFG {
// Driver code
public static void Main()
{
// Creating a LinkedList of Strings
LinkedList myList = new LinkedList();
// Adding nodes in LinkedList
myList.AddLast("A");
myList.AddLast("B");
myList.AddLast("C");
myList.AddLast("D");
myList.AddLast("E");
// To check if a value is in LinkedList
Console.WriteLine(myList.Contains("B"));
}
}
输出:
True
范例2:
// C# code to check if a
// value is in LinkedList
using System;
using System.Collections;
using System.Collections.Generic;
class GFG {
// Driver code
public static void Main()
{
// Creating a LinkedList of Integers
LinkedList myList = new LinkedList();
// Adding nodes in LinkedList
myList.AddLast(1);
myList.AddLast(2);
myList.AddLast(3);
myList.AddLast(4);
myList.AddLast(5);
// To check if a value is in LinkedList
Console.WriteLine(myList.Contains(8));
}
}
输出:
False
注意:此方法执行线性搜索。因此,此方法是O(n)运算,其中n是Count。
参考:
- https://docs.microsoft.com/zh-cn/dotnet/api/system.collections.generic.linkedlist-1.contains?view=netframework-4.7.2