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Removing the node at the start of the LinkedList in C#
To remove the node at the start of the LinkedList, the code is as follows −
Example
using System;
using System.Collections.Generic;
public class Demo {
public static void Main(){
LinkedList<string> list = new LinkedList<string>();
list.AddLast("One");
list.AddLast("Two");
list.AddLast("Three");
list.AddLast("Three");
list.AddLast("Three");
list.AddLast("Four");
Console.WriteLine("Count of nodes = " + list.Count);
Console.WriteLine("Elements in LinkedList... (Enumerator iterating through LinkedList)");
LinkedList<string>.Enumerator demoEnum = list.GetEnumerator();
while (demoEnum.MoveNext()) {
string res = demoEnum.Current;
Console.WriteLine(res);
}
list.RemoveFirst();
Console.WriteLine("Count of nodes (UPDATED) = " + list.Count);
Console.WriteLine("Elements in LinkedList... (Enumerator iterating through LinkedList)..UPDATED");
demoEnum = list.GetEnumerator();
while (demoEnum.MoveNext()) {
string res = demoEnum.Current;
Console.WriteLine(res);
}
}
}Output
This will produce the following output −
Count of nodes = 6 Elements in LinkedList... (Enumerator iterating through LinkedList) One Two Three Three Three Four Count of nodes (UPDATED) = 5 Elements in LinkedList... (Enumerator iterating through LinkedList)..UPDATED Two Three Three Three Four
Example
Let us see another example −
using System;
using System.Collections.Generic;
public class Demo {
public static void Main(){
LinkedList<string> list = new LinkedList<string>();
list.AddLast("One");
list.AddLast("Two");
list.AddLast("Three");
list.AddLast("Three");
list.AddLast("Three");
list.AddLast("Four");
Console.WriteLine("Count of nodes = " + list.Count);
Console.WriteLine("Elements in LinkedList... (Enumerator iterating through LinkedList)");
LinkedList<string>.Enumerator demoEnum = list.GetEnumerator();
while (demoEnum.MoveNext()) {
string res = demoEnum.Current;
Console.WriteLine(res);
}
list.RemoveFirst();
Console.WriteLine("Count of nodes (UPDATED) = " + list.Count);
Console.WriteLine("Elements in LinkedList... (Enumerator iterating through LinkedList)..UPDATED");
demoEnum = list.GetEnumerator();
while (demoEnum.MoveNext()) {
string res = demoEnum.Current;
Console.WriteLine(res);
}
list.RemoveFirst();
Console.WriteLine("Count of nodes (UPDATED AGAIN) = " + list.Count);
Console.WriteLine("Elements in LinkedList... (Enumerator iterating through LinkedList)..UPDATED AGAIN");
demoEnum = list.GetEnumerator();
while (demoEnum.MoveNext()) {
string res = demoEnum.Current;
Console.WriteLine(res);
}
}
}Output
This will produce the following output −
Count of nodes = 6 Elements in LinkedList... (Enumerator iterating through LinkedList) One Two Three Three Three Four Count of nodes (UPDATED) = 5 Elements in LinkedList... (Enumerator iterating through LinkedList)..UPDATED Two Three Three Three Four Count of nodes (UPDATED AGAIN) = 4 Elements in LinkedList... (Enumerator iterating through LinkedList)..UPDATED AGAIN Three Three Three Four
Updated on: 02-May-2020
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