public void InOrderTreeWalk(RBNode node)
{
if (node != null)
{
InOrderTreeWalk(node.left);
Console.WriteLine(node.key + " " + node.data + " is red? " + node.isRed);
InOrderTreeWalk(node.right);
}
}
public void Driver(string[] checkList, RBNode root)
{
for (int i = 0; i < checkList.Length; i++)
{
var timer = new Stopwatch();
timer.Start();
var node = TreeSearch(root, long.Parse(checkList[i]));
timer.Stop();
Console.WriteLine(node.key + " found in " + timer.Elapsed);
}
}
public RBNode TreeSearch(RBNode node, long key)
{
if (node == null || key == node.key)
{
return(node);
}
if (key < node.key)
{
return(TreeSearch(node.left, key));
}
else
{
return(TreeSearch(node.right, key));
}
}
public void Insert(RBTree tree, RBNode node)
{
RBNode y = null;
RBNode x = tree.root;
tree.size++;
while (x != null)
{
y = x;
if (node.key < x.key)
{
x = x.left;
}
else
{
x = x.right;
}
}
node.parent = y;
if (y == null)
{
tree.root = node;
}
else if (node.key < y.key)
{
y.left = node;
}
else
{
y.right = node;
}
node.left = null;
node.right = null;
node.isRed = true;
RBInsertFixup(tree, node);
}
public RBTree TreeMake(List <string> l1)
{
char[] splitter = { '\n', '\r', ',' };
List <string> list1 = new List <string>();
List <string> list2 = new List <string>();
for (int i = 0; i < l1.Count; i++)
{
string[] temp = l1[i].Split(splitter);
string holding = "";
for (int j = 0; j < temp.Length; j++)
{
if (j == 0)
{
list1.Add(temp[j]);
}
else
{
holding += (temp[j] + " ");
}
}
list2.Add(holding);
}
var a1 = list1.ToArray();
var a2 = list2.ToArray();
RBTree rBTree = new RBTree();
for (int i = 0; i < a1.Length; i++)
{
RBNode node = new RBNode(long.Parse(a1[i]), a2[i]);
Insert(rBTree, node);
}
//l1.Clear();
return(rBTree);
}
public void RBInsertFixup(RBTree tree, RBNode node)
{
while (node != tree.root && node.parent.isRed == true)
{
if (node.parent == node.parent.parent.left)
{
RBNode y = node.parent.parent.right;
if (y != null && y.isRed == true)
{
node.parent.isRed = false;
y.isRed = false;
node.parent.parent.isRed = true;
node = node.parent.parent;
}
else
{
if (node == node.parent.right)
{
node = node.parent;
LeftRotate(tree, node);
}
else
{
node.parent.isRed = false;
node.parent.parent.isRed = true;
RightRotate(tree, node.parent.parent);
}
}
}
else
{
RBNode y = node.parent.parent.left;
if (y != null && y.isRed == true)
{
node.parent.isRed = false;
y.isRed = false;
node.parent.parent.isRed = true;
node = node.parent.parent;
}
else
{
if (node == node.parent.left)
{
node = node.parent;
RightRotate(tree, node);
}
else
{
node.parent.isRed = false;
node.parent.parent.isRed = true;
LeftRotate(tree, node.parent.parent);
}
}
}
//tree.root.isRed = false;
}
tree.root.isRed = false;
}
