C＃のLinkedListの先頭にあるノードを削除する

LinkedListの先頭にあるノードを削除するには、コードは次のとおりです-

例

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);
      }
   }
}

出力

これにより、次の出力が生成されます-

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

例

別の例を見てみましょう-

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);
      }
   }
}

出力

これにより、次の出力が生成されます-

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