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LinkedList-Generic-AddFirst,AddLast.cs
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LinkedList-Generic-AddFirst,AddLast.cs
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#nullable enable
using System;
namespace Bme121
{
partial class LinkedList< TData >
{
// Add a new item at the beginning of the linked list.
public void Prepend( TData newData ) { AddFirst( newData ); }
public void AddFirst( TData newData )
{
if( newData == null ) throw new ArgumentNullException( nameof( newData ) );
Node newNode = new Node( newData );
Node? oldHead = Head;
if( Tail == null ) Tail = newNode;
else newNode.Next = oldHead;
Head = newNode;
Count ++;
}
// Add a new item at the end of the linked list.
public void Append( TData newData ) { AddLast( newData ); }
public void AddLast( TData newData )
{
if( newData == null ) throw new ArgumentNullException( nameof( newData ) );
Node newNode = new Node( newData );
Node? oldTail = Tail;
if( Head == null ) Head = newNode;
else oldTail!.Next = newNode;
Tail = newNode;
Count ++;
}
}
}