private void DeleteInArray(AssociativeTreeNode <T> treeNode)
{
int indexForRemove = FindIndexOfNode(treeNode);
if (indexForRemove != -1)
{
Count--;
RemoveInArray(indexForRemove);
DecrementIndexes(indexForRemove);
}
}
public void AddNode(AssociativeTreeNode <T> nodeForAdd)
{
if (Root == null)
{
Root = nodeForAdd;
AssociativeTreeNodes[Count++] = Root;
}
else
{
AddNode(Root, nodeForAdd);
}
}
private void RemoveOperationThirdCase(AssociativeTreeNode <T> nodeForRemove)
{
var nodeForSwap = AssociativeTreeNodes[nodeForRemove.Right];
while (nodeForSwap.Left != -1)
{
nodeForSwap = AssociativeTreeNodes[nodeForSwap.Left];
}
DeleteNode(nodeForSwap);
nodeForRemove.Value = nodeForSwap.Value;
}
private void RemoveOperationFirstCase(AssociativeTreeNode <T> nodeForRemove, int valueForReplace = -1)
{
var prevNode = FindPrev(nodeForRemove);
if (prevNode.Left != -1)
{
prevNode.Left = valueForReplace;
}
else if (prevNode.Right != -1)
{
prevNode.Right = valueForReplace;
}
}
public void DeleteNode(AssociativeTreeNode <T> treeNode)
{
if (treeNode.Equals(Root))
{
DeleteRoot();
}
else
{
DeleteNode(Root, treeNode);
}
DeleteInArray(treeNode);
}
private int FindIndexOfNode(AssociativeTreeNode <T> nodeForSearch)
{
int index = -1;
for (int i = 0; i < Count && (index == -1); i++)
{
if (nodeForSearch.Equals(AssociativeTreeNodes[i]))
{
index = i;
}
}
return(index);
}
private void AssociativeTreeOutput(AssociativeTreeNode <T> treeNode, AssociativeTreeNode <T>[] array, int level)
{
if (treeNode != null)
{
var rightLeaf = (treeNode.Right != -1) ? array[treeNode.Right] : null;
var leftLeaf = (treeNode.Left != -1) ? array[treeNode.Left] : null;
AssociativeTreeOutput(rightLeaf, array, (level + 1));
Console.WriteLine($"{new string('\t',level)}{treeNode.Value}");
AssociativeTreeOutput(leftLeaf, array, (level + 1));
}
}
private void StepToAllNodes(AssociativeTreeNode <T>[] array, AssociativeTreeNode <T> treeNode)
{
if (treeNode != null)
{
var leftNode = (treeNode.Left != -1) ? array[treeNode.Left] : null;
StepToAllNodes(array, leftNode);
if (treeNode.Left == -1 && treeNode.Right == -1)
{
linkedList.Add(treeNode.Value);
}
var rightNode = (treeNode.Right != -1) ? array[treeNode.Right] : null;
StepToAllNodes(array, rightNode);
}
}
private void RemoveFromNodeOperation(AssociativeTreeNode <T> nodeForRemove)
{
var node = FindNode(nodeForRemove);
if (node.Left == -1 && node.Right == -1)
{
RemoveOperationFirstCase(node);
}
else if ((node.Left == -1 && node.Right != -1) || (node.Left != -1 && node.Right == -1))
{
RemoveOperationSecondCase(node);
}
else if (node.Left != -1 && node.Right != -1)
{
RemoveOperationThirdCase(node);
}
}
private bool Contains(AssociativeTreeNode <T> treeNode, AssociativeTreeNode <T> nodeForSearch)
{
if (treeNode != null)
{
var rightNode = (treeNode.Right != -1) ? AssociativeTreeNodes[treeNode.Right] : null;
var leftNode = (treeNode.Left != -1) ? AssociativeTreeNodes[treeNode.Left] : null;
if (nodeForSearch > treeNode)
{
return(Contains(rightNode, nodeForSearch));
}
else if (nodeForSearch < treeNode)
{
return(Contains(leftNode, nodeForSearch));
}
}
return(treeNode != null && treeNode.Equals(nodeForSearch));
}
private AssociativeTreeNode <T> FindPrev(AssociativeTreeNode <T> treeNode, AssociativeTreeNode <T> nodeForSearch)
{
if (treeNode != null)
{
var leftNode = (treeNode.Left != -1) ? AssociativeTreeNodes[treeNode.Left] : null;
var rightNode = (treeNode.Right != -1) ? AssociativeTreeNodes[treeNode.Right] : null;
if (nodeForSearch > treeNode)
{
return(nodeForSearch.Equals(rightNode) ? treeNode : FindPrev(rightNode, nodeForSearch));
}
else if (nodeForSearch < treeNode)
{
return(nodeForSearch.Equals(leftNode) ? treeNode : FindPrev(leftNode, nodeForSearch));
}
}
throw new TreeException("Can't Find the node!");
}
private void AddNode(AssociativeTreeNode <T> treeNode, AssociativeTreeNode <T> nodeForAdd)
{
if (nodeForAdd > treeNode)
{
if (treeNode.Right == -1)
{
if (Count == AssociativeTreeNodes.Length)
{
Array.Resize(ref AssociativeTreeNodes, Count * 2);
}
treeNode.Right = Count;
AssociativeTreeNodes[Count++] = nodeForAdd;
}
else
{
AddNode(AssociativeTreeNodes[treeNode.Right], nodeForAdd);
}
}
else if (nodeForAdd < treeNode)
{
if (treeNode.Left == -1)
{
if (Count == AssociativeTreeNodes.Length)
{
Array.Resize(ref AssociativeTreeNodes, Count * 2);
}
treeNode.Left = Count;
AssociativeTreeNodes[Count++] = nodeForAdd;
}
else
{
AddNode(AssociativeTreeNodes[treeNode.Left], nodeForAdd);
}
}
else
{
throw new TreeException("The Tree contains the element");
}
}
private void DeleteNode(AssociativeTreeNode <T> treeNode, AssociativeTreeNode <T> nodeForRemove)
{
if (treeNode != null)
{
var rightNode = (treeNode.Right != -1) ? AssociativeTreeNodes[treeNode.Right] : null;
var leftNode = (treeNode.Left != -1) ? AssociativeTreeNodes[treeNode.Left] : null;
if (nodeForRemove > treeNode)
{
DeleteNode(rightNode, nodeForRemove);
}
else if (nodeForRemove < treeNode)
{
DeleteNode(leftNode, nodeForRemove);
}
else if (nodeForRemove.Equals(treeNode))
{
RemoveFromNodeOperation(treeNode);
}
}
}
private void StepToAllNodes(AssociativeTreeNode <T>[] array, AssociativeTreeNode <T> associativeTreeNode)
{
if (associativeTreeNode != null)
{
var leftNode = (associativeTreeNode.Left != -1) ? array[associativeTreeNode.Left] : null;
StepToAllNodes(array, leftNode);
var linkedList = GetRightBranch(array, associativeTreeNode);
if (maxRightBranch == null)
{
maxRightBranch = linkedList;
}
else if (maxRightBranch.Count < linkedList.Count)
{
maxRightBranch = linkedList;
}
var rightNode = (associativeTreeNode.Right != -1) ? array[associativeTreeNode.Right] : null;
StepToAllNodes(array, rightNode);
}
}
private AssociativeLinkedList <T> GetRightBranch(AssociativeTreeNode <T>[] array, AssociativeTreeNode <T> associativeTreeNode)
{
AssociativeLinkedList <T> associativeLinkedList = new AssociativeLinkedList <T>();
while (associativeTreeNode != null)
{
associativeLinkedList.Add(associativeTreeNode.Value);
associativeTreeNode = (associativeTreeNode.Right != -1) ? array[associativeTreeNode.Right] : null;
}
return(associativeLinkedList);
}
private void RemoveOperationSecondCase(AssociativeTreeNode <T> nodeForRemove) => RemoveOperationFirstCase(nodeForRemove, Math.Max(nodeForRemove.Left, nodeForRemove.Left));
private AssociativeTreeNode <T> GetMaxNode(AssociativeTreeNode <T> treeNode) => ((treeNode != null && treeNode.Right != -1) ? GetMaxNode(AssociativeTreeNodes[treeNode.Right]) : treeNode);
private AssociativeTreeNode <T> GetMinNode(AssociativeTreeNode <T> treeNode) => ((treeNode != null && treeNode.Left != -1) ? GetMinNode(AssociativeTreeNodes[treeNode.Left]) : treeNode);
private AssociativeTreeNode <T> FindPrev(AssociativeTreeNode <T> treeNode) => FindPrev(Root, treeNode);
private AssociativeTreeNode <T> FindNode(AssociativeTreeNode <T> treeNode) => FindNode(Root, treeNode);
public AssociativeTree(AssociativeTreeNode <T> treeNode)
{
Root = treeNode ?? throw new ArgumentNullException("Root can't be null");
AssociativeTreeNodes[Count++] = Root;
}
public bool Contains(AssociativeTreeNode <T> treeNode) => Contains(Root, treeNode);