public int GetHeight(KarthicAryTreeNode root)
{
//Height of root node is 0
//Height of 1st level is 1
if (root == null)
{
return(0);
}
//if there is a leaf node then return 0
if (root.Children.Count == 0)
{
return(0);
}
int maxheight = 0;
foreach (KarthicAryTreeNode child in root.Children)
{
maxheight = Math.Max(maxheight, GetHeight(child));
}
return(maxheight + 1);
}
public string BreathFirstTraversal(KarthicAryTreeNode root)
{
if (root == null)
{
return(string.Empty);
}
StringBuilder sb = new StringBuilder();
Queue <KarthicAryTreeNode> myqueue = new Queue <KarthicAryTreeNode>();
myqueue.Enqueue(root);
sb.Append(root.Data).Append(",");
while (myqueue.Count != 0)
{
KarthicAryTreeNode current = myqueue.Dequeue();
foreach (KarthicAryTreeNode child in current.Children)
{
//visit child
sb.Append(child.Data).Append(",");
myqueue.Enqueue(child);
}
}
return(sb.ToString());
}
public string DepthFirstSearch(KarthicAryTreeNode root)
{
StringBuilder sb = new StringBuilder();
if (root == null)
{
return(string.Empty);
}
//root is not null..visit the current
sb.Append(root.Data);
//check for leaf node //End of child marker
if (root.Children.Count == 0)
{
sb.Append('(');
return(sb.ToString());
}
//It is not leaf node..then go depth first search
foreach (KarthicAryTreeNode child in root.Children)
{
sb.Append(DepthFirstSearch(child));
}
//End of child marker
sb.Append('(');
return(sb.ToString());
}
public static KarthicAryTree SetUpAryTreeWithThreeChildren()
{
KarthicAryTree tree = new KarthicAryTree();
KarthicAryTreeNode node1 = new KarthicAryTreeNode(1);
KarthicAryTreeNode node2 = new KarthicAryTreeNode(2);
KarthicAryTreeNode node3 = new KarthicAryTreeNode(3);
KarthicAryTreeNode node4 = new KarthicAryTreeNode(4);
KarthicAryTreeNode node5 = new KarthicAryTreeNode(5);
KarthicAryTreeNode node6 = new KarthicAryTreeNode(6);
KarthicAryTreeNode node7 = new KarthicAryTreeNode(7);
KarthicAryTreeNode node8 = new KarthicAryTreeNode(8);
KarthicAryTreeNode node9 = new KarthicAryTreeNode(9);
tree.root = node1;
node1.Children.Add(node2);
node1.Children.Add(node3);
node1.Children.Add(node4);
//level 2
node2.Children.Add(node5);
node2.Children.Add(node6);
node4.Children.Add(node7);
node4.Children.Add(node8);
node4.Children.Add(node9);
return(tree);
}
public KarthicAryTree BuildAryTreeFromArray(int[] array, int k)
{
//int[] array has value..remember if the value is zero mean there is no node...there might be lot of empty value..
//bcoz all the node in n-ary may or may not have n children
//build the root
List <KarthicAryTreeNode> nodelist = new List <KarthicAryTreeNode>(); //we got to maintain the node list
Dictionary <int, KarthicAryTreeNode> ht = new Dictionary <int, KarthicAryTreeNode>();
//ht key is index and value is tree node
KarthicAryTree tree = new KarthicAryTree();
tree.root = new KarthicAryTreeNode(array[0]);
//nodelist.Add(tree.root);
ht.Add(0, tree.root);
//we already build the root so start from the 1
for (int index = 1; index < array.Length; index++)
{
//only if the value is greater than 0 we build the tree
if (array[index] > 0)
{
//get the parent index
int parentindex = (index - 1) / k;
//since we build level by level the parent node would already be present when the code comes here
//get the parent node
KarthicAryTreeNode parent = ht[parentindex];
//build child
KarthicAryTreeNode child = new KarthicAryTreeNode(array[index]);
//nodelist.Add(child);
ht.Add(index, child);
parent.Children.Add(child);
}
//else
//{
// //Update 5/5/2015
// //If the code comes here mean an array[index] == 0 found
// //that means no children exists for the given index
// //to maintain the index of nodelist so that parent is maintained in right order
// nodelist.Add(null);
//}
}
return(tree);
}
public void AddNode(KarthicAryTreeNode node)
{
}
public AryNodeWithIndex(KarthicAryTreeNode node, int index)
{
this.node = node;
this.index = index;
}