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c#.netreplacelinked-list
Dusean Singh
Dusean Singh

Reputation: 1494

How to replace an element in a LinkedList?

How do you replace an element in a Linked list in C#? While in java either can use set or add method to replace a particular element in the list... I can´t find how do I replace it in C#.

Upvotes: 4

Views: 10817

Answers (3)

Olivier Jacot-Descombes
Olivier Jacot-Descombes

Reputation: 112372

With LinkedList<T> you work on LinkedListNode<T> items. LinkedListNode<T> has a Value property that you can use get or set a particular item.

Unlike c#, Java does not have the concept of properties integrated in the language. In Java you create properties by adding hand-made set_Property and get_Property methods. The c# properties can be accessed like fields.

Java:

obj.set_MyProperty(123);
x = obj.get_MyProperty();

c#:

obj.MyProperty = 123;
x = obj.MyProperty;

Internally however, c# calls getter and setter methods as well. You would declare a property like this in c#:

private int _myProperty;
public int MyProperty {
    get { return _myProperty; }
    set { _myProperty = value; }
}

In this special case, when no other logic is involved you can use automatically implemented properties:

public int MyProperty { get; set; }

In your linked list, you would change the frst element of the list like this:

myLinkedList.Fist.Value = your new value;

Upvotes: 2

Magnus
Magnus

Reputation: 46937

Replace value 2 with 3:

LinkedList<int> ll;
ll.Find(2).Value = 3;

Upvotes: 15

Jim Mischel
Jim Mischel

Reputation: 134005

There is no Replace method for a linked list node. To replace a node, you have to:

  1. Find the node you want to replace.
  2. Insert a new node before that node (AddBefore)
  3. Remove the original node.

You could also use AddAfter. The result would be the same.

Upvotes: 8

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