Added delete method to doubly linked list
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@ -90,6 +90,26 @@ namespace C_.Datastructures
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public bool Delete(int index){
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DoublyLinkedListNode<T>? node = Traverse(index);
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if (node == default) return false;
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if(node.Prev != default){
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//connect item beofre to item after node we are deleting
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node.Prev.Next = node.Next;
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}
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//Connect item after to the the item before the node we are deleting
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if (node.Next != default)
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{
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node.Next.Prev = node.Prev;
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}
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Count--;
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return true;
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}
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private DoublyLinkedListNode<T>? Traverse()
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private DoublyLinkedListNode<T>? Traverse()
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{
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{
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@ -144,14 +144,14 @@ namespace C_.Datastructures
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// return node;
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// return node;
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//}
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//}
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private LinkedListNode<T>? Traverse(int n)
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private LinkedListNode<T>? Traverse(int i)
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{
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{
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//Start at given point in list
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//Start at given point in list
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LinkedListNode<T>? node = Head;
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LinkedListNode<T>? node = Head;
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if (node != null || n == 0)
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if (node != null || i == 0)
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{
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{
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//Continue to end of list
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//Continue to end of list
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for (int i = 0; i < n; i++)
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for (int j = 0; j < i; j++)
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{
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{
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if (node!.Next == null) return null;
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if (node!.Next == null) return null;
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node = (LinkedListNode<T>)node.Next;
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node = (LinkedListNode<T>)node.Next;
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@ -27,7 +27,7 @@ list2.Add(6);
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list2.Add(7);
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list2.Add(7);
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list2.Add(8);
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list2.Add(8);
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var list3 = DoublyLinkedList<int>.Create(list, null);
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list.Delete(2);
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var x = list[-6];
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var x = list[-6];
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