private static void Main()
{
Console.WriteLine("Represents the following tree");
Console.WriteLine(@" 4 ");
Console.WriteLine(@" / \ ");
Console.WriteLine(@" / \ ");
Console.WriteLine(@" / \ ");
Console.WriteLine(@" / \ ");
Console.WriteLine(@" 2 6 ");
Console.WriteLine(@" / \ / \ ");
Console.WriteLine(@" / \ / \ ");
Console.WriteLine(@" / \ / \ ");
Console.WriteLine(@" 1 3 5 7 ");
var binaryTree = new BinaryTree<int>();
binaryTree.Add(4);
binaryTree.Add(2);
binaryTree.Add(6);
binaryTree.Add(1);
binaryTree.Add(3);
binaryTree.Add(5);
binaryTree.Add(7);
var preOrderTraversal = new PreOrderTraversal<int>();
Console.Write("PreOrder: ");
preOrderTraversal.Traverse(binaryTree.Root);
Console.WriteLine();
Console.Write("InOrder: ");
var inOrderTraversal = new PreOrderTraversal<int>();
inOrderTraversal.Traverse(binaryTree.Root);
Console.WriteLine();
Console.Write("PostOrder: ");
var postOrderTraversal = new PostOrderTraversal<int>();
postOrderTraversal.Traverse(binaryTree.Root);
Console.WriteLine();
Console.WriteLine("Value to find: 5");
Node<int> nodeFound = binaryTree.Find(5);
if (nodeFound == null)
Console.WriteLine("Value not found");
else
Console.WriteLine("Value found: {0}", nodeFound.Value);
Console.WriteLine();
Console.WriteLine("Value to find: 100");
Node<int> notFound = binaryTree.Find(100);
Console.WriteLine(notFound == null ? "Worked as expected" : "Failed");
}
static void Main()
{
var tree =
new Tree<int>(7,
new Tree<int>(19,
new Tree<int>(1),
new Tree<int>(12),
new Tree<int>(31)),
new Tree<int>(21),
new Tree<int>(14,
new Tree<int>(23),
new Tree<int>(6)));
Console.WriteLine("Tree (indented):");
tree.Print();
Console.Write("Tree nodes:");
tree.Each(c => Console.Write(" " + c));
Console.WriteLine();
Console.WriteLine();
var binaryTree =
new BinaryTree<string>("*",
new BinaryTree<string>("+",
new BinaryTree<string>("3"),
new BinaryTree<string>("2")),
new BinaryTree<string>("-",
new BinaryTree<string>("9"),
new BinaryTree<string>("6")));
Console.WriteLine("Binary tree (indented, pre-order):");
binaryTree.PrintIndentedPreOrder();
Console.Write("Binary tree nodes (in-order):");
binaryTree.EachInOrder(c => Console.Write(" " + c));
Console.WriteLine();
Console.Write("Binary tree nodes (post-order):");
binaryTree.EachPostOrder(c => Console.Write(" " + c));
Console.WriteLine();
}
public static void driver()
{
BinaryTree tree = new BinaryTree();
Console.WriteLine("Tree Traversals: \n\nInorder traversal recursive: ");
tree.inorderRecur(tree.root);
tree.inorderIter(tree.root);
tree.inorderMorris(tree.root);
Console.WriteLine("\nInorder successor = {0}", tree.inorderSuccBST(tree.root.left.right.right));
Console.WriteLine("Inorder predecessor = {0}", tree.inorderPredBST(tree.root.left.right.right.left));
Console.WriteLine("\n\nPreorder traversal recursive: ");
tree.preorderRecur(tree.root);
tree.preorderIter(tree.root);
tree.preorderMorris(tree.root);
Console.WriteLine("\nPreorder successor = {0}", tree.preorderSuccBST(tree.root.left.left));
Console.WriteLine("Preorder predecessor = {0}", tree.preorderPredBST(tree.root));
Console.WriteLine("\n\nPostorder traversal recursive: ");
tree.postorderRecur(tree.root);
tree.postorderIter(tree.root);
tree.postorderIterOneStack(tree.root);
Console.WriteLine("\n\nLevelorder traversal: ");
tree.levelorder(tree.root);
int[] pre = {6, 2, 1, 3, 5, 4, 8, 7, 10, 9};
int[] inorder = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
int preIndex = 0;
Node inpreNode = tree.InPreToBinaryTree(pre, inorder, 0, inorder.Length - 1, ref preIndex);
Console.WriteLine("\nNewly constructed tree from inorder and preorder traversals: ");
tree.levelorder(inpreNode);
Console.WriteLine("\nSorted Array to Balanced BST: ");
Node arrToBSTNode = tree.SortedArrToBinaryTree(inorder, 0, inorder.Length - 1);
tree.levelorder(arrToBSTNode);
}
public static void Main(string[] args)
{
// Declare placeholder variables - used later by various methods
string menuSelection = "", newNodeInput = "", nodeSearchValue = "";
// Instantiate BinaryTree and BinarySearchTree objects, add initial values
BinaryTree binTree = new BinaryTree(new Node(25));
binTree.Add(binTree.Root, new Node(10));
binTree.Add(binTree.Root, new Node(5));
binTree.Add(binTree.Root, new Node(7));
binTree.Add(binTree.Root, new Node(1));
binTree.Add(binTree.Root, new Node(40));
binTree.Add(binTree.Root, new Node(50));
binTree.Add(binTree.Root, new Node(30));
BinarySearchTree binSearchTree = new BinarySearchTree(new Node(25));
binSearchTree.Add(binSearchTree.Root, new Node(10));
binSearchTree.Add(binSearchTree.Root, new Node(5));
binSearchTree.Add(binSearchTree.Root, new Node(7));
binSearchTree.Add(binSearchTree.Root, new Node(1));
binSearchTree.Add(binSearchTree.Root, new Node(40));
binSearchTree.Add(binSearchTree.Root, new Node(50));
binSearchTree.Add(binSearchTree.Root, new Node(30));
// Loop until the user enters the "8" key to exit the application
do
{
// Prompt user to select an option from the menu
PrintMainMenu();
menuSelection = Console.ReadLine();
Console.Clear();
switch (menuSelection)
{
case "1": // Adds a Node to the Binary Tree
Console.WriteLine("What value you like add to the Binary Tree?");
newNodeInput = Console.ReadLine();
Console.Clear();
if (int.TryParse(newNodeInput, out int binTree_Add))
{
binTree.Add(binTree.Root, new Node(binTree_Add));
Console.WriteLine("Success!");
}
else
{
Console.WriteLine("Sorry, unable to add that value to the Binary Tree.");
}
PromptToReturnToMainMenu();
break;
case "2": // Adds a Node to the Binary Search Tree
Console.WriteLine("What value you like add to the Binary Search Tree?");
newNodeInput = Console.ReadLine();
Console.Clear();
if (int.TryParse(newNodeInput, out int binSearchTree_Add))
{
binSearchTree.Add(binSearchTree.Root, new Node(binSearchTree_Add));
Console.WriteLine("Success!");
}
else
{
Console.WriteLine("Sorry, unable to add that value to the Binary Search Tree.");
}
PromptToReturnToMainMenu();
break;
case "3": // Searches for a value in the Binary Tree
Console.WriteLine("What value you like search for in the Binary Tree?");
nodeSearchValue = Console.ReadLine();
Console.Clear();
if (int.TryParse(nodeSearchValue, out int binTree_Search))
{
Node foundBinTreeNode = binTree.Search(binTree.Root, binTree_Search);
if (foundBinTreeNode != null)
{
Console.WriteLine("Found!");
}
else
{
Console.WriteLine("That value does not exist within the Binary Tree");
}
}
else
{
Console.WriteLine("Sorry, please input an integer to search for.");
}
PromptToReturnToMainMenu();
break;
case "4": // Searches for a value in the Binary Search Tree
Console.WriteLine("What value you like search for in the Binary Search Tree?");
nodeSearchValue = Console.ReadLine();
Console.Clear();
if (int.TryParse(nodeSearchValue, out int binSearchTree_Search))
{
Node foundBinSearchTreeNode = binSearchTree.Search(binSearchTree.Root, binSearchTree_Search);
if (foundBinSearchTreeNode != null)
{
Console.WriteLine("Found!");
}
else
{
Console.WriteLine("That value does not exist within the Binary Search Tree");
}
}
else
{
Console.WriteLine("Sorry, please input an integer to search for.");
}
PromptToReturnToMainMenu();
break;
case "5": // Prints the values in the Binary Tree in "Preorder" sequence
binTree.PreOrder(binTree.Root);
PromptToReturnToMainMenu();
break;
case "6": // Prints the values in the Binary Tree in "Postorder" sequence
binTree.PostOrder(binTree.Root);
PromptToReturnToMainMenu();
break;
case "7": // Prints the values in the Binary Tree in "Inorder" sequence
binTree.InOrder(binTree.Root);
PromptToReturnToMainMenu();
break;
case "8": // Prints the values in the Binary Tree in "Breadth First" sequence
binTree.BreadthFirst(binTree.Root);
PromptToReturnToMainMenu();
break;
case "9": // Exits the Program
Environment.Exit(0);
break;
default: // Handles cases where user doesn't enter a valid menu option
Console.WriteLine("That did not match one of the menu options. Try again.\n");
break;
}
} while (menuSelection != "9");
}
static void Main(string[] args)
{
BinaryTree.MyMain();
Console.ReadLine();
}
public BinaryTree(int value)
{
this.value = value;
this.rightChild = null;
this.leftChild = null;
}
public static void TreeCarlos()
{
Node nodeOne = new Node(1);
Node nodeTwo = new Node(2);
Node nodeThree = new Node(3);
Node nodeFour = new Node(4);
Node nodeFive = new Node(5);
Node nodeSix = new Node(6);
Node nodeSeven = new Node(7);
Node nodeEight = new Node(8);
Node nodeNine = new Node(9);
Node nodeTen = new Node(10);
BinaryTree binaryTree = new BinaryTree(nodeOne);
binaryTree.Root.LeftChild = nodeTwo;
binaryTree.Root.RightChild = nodeThree;
binaryTree.Root.LeftChild.LeftChild = nodeFour;
binaryTree.Root.LeftChild.RightChild = nodeFive;
binaryTree.Root.RightChild.LeftChild = nodeSix;
binaryTree.Root.RightChild.RightChild = nodeSeven;
Console.WriteLine(" ");
Console.WriteLine("==========PreOrder=========");
List <int> preOrder = binaryTree.PreOrder(binaryTree.Root);
foreach (var item in preOrder)
{
Console.Write(item);
}
binaryTree.values.Clear();
Console.WriteLine(" ");
Console.WriteLine("==========InOrder=========");
List <int> inOrder = binaryTree.InOrder(binaryTree.Root);
foreach (var item in inOrder)
{
Console.Write(item);
}
binaryTree.values.Clear();
Console.WriteLine(" ");
Console.WriteLine("==========PostOrder=========");
List <int> postOrder = binaryTree.PostOrder(binaryTree.Root);
foreach (var item in postOrder)
{
Console.Write(item);
}
binaryTree.values.Clear();
Console.WriteLine(" ");
Console.WriteLine("==========Add Binary Search Tree=========");
Console.WriteLine("Added 2, 3, 4, 6, 7, 8, 10");
BinarySearchTree binarySearchTree = new BinarySearchTree();
binarySearchTree.Add(nodeSix, 3);
binarySearchTree.Add(nodeSix, 2);
binarySearchTree.Add(nodeSix, 4);
binarySearchTree.Add(nodeSix, 8);
binarySearchTree.Add(nodeSix, 7);
binarySearchTree.Add(nodeSix, 10);
Console.WriteLine("==========Contains Binary Search Tree=========");
Console.WriteLine($"Contains 7: {binarySearchTree.Contains(nodeSix, 4)}");
Console.WriteLine($"Contains 52: {binarySearchTree.Contains(nodeSix, 52)}");
}
public static void PostOrder(BinaryTree tree)
{
PostOrder(tree.Root);
}
static void Main(string[] args)
{
BinaryTree tree = new BinaryTree();
//BST insert
/* 7
* 4 10
* 3 6 9 11
* 1
* 2
*
*
* */
tree.Insert(7);
tree.Insert(10);
tree.Insert(4);
tree.Insert(6, isIterative: true);
tree.Insert(9, isIterative: true);
tree.Insert(11);
tree.Insert(3);
//tree.Insert(5);
tree.Insert(1);
tree.Insert(2);
//Binary Tree Insert
/* 7
* 2 2
* 3 3 3 3
*
* */
//BinaryTree tree1 = new BinaryTree();
//tree1.BinaryTreeInsert(7);
//tree1.BinaryTreeInsert(2);
//tree1.BinaryTreeInsert(2);
//tree1.BinaryTreeInsert(3);
//tree1.BinaryTreeInsert(3);
//tree1.BinaryTreeInsert(3);
//tree1.BinaryTreeInsert(3);
//tree1.InorderTraversal(tree1.Root);
//bool isSymmetric = tree1.isSymmetric();
//Console.WriteLine("Is this tree symmetric?" + isSymmetric);
//Test code
//tree.Insert(10);
//tree.Insert(9);
//tree.Insert(11);
//tree.Insert(8);
//tree.InorderTraversal(tree.Root);
BinaryTreeNode x = tree.Search(12, isIterative: true);
if(x!=null)
{
Console.WriteLine("Found the element searching for.." + x.Key);
}
int height = tree.Height(isiterative: false);
Console.WriteLine(height);
bool isHeighBalanced = tree.IsHeightBalanced();
Console.WriteLine("Is it a height balanced tree?" + isHeighBalanced);
BinaryTreeNode kthInorderNode = null;
int k = 10;
tree.KthNodeInorder(ref kthInorderNode, k);
if (kthInorderNode != null)
{
Console.WriteLine("the kth order node is " + kthInorderNode.Key);
}
//Binary tree to doubly linked list
BinaryTreeNode visited = null;
tree.BinaryTreeToDoublyLinkedList(ref visited);
tree.PrintDoublyLinkedList(tree.Root);
//LCA of Binary Tree
//BinaryTreeNode lca = tree.LCA(3, 6);
//if(lca!=null)
//{
// Console.WriteLine("LCA of {0},{1} is {2}", 3, 6, lca.Key);
//}
// LCA of binary Search tree
//BinaryTreeNode lca_bst = tree.LCA(2, 9);
//if (lca_bst != null)
//{
// Console.WriteLine("LCA of {0},{1} is {2}", 1, 2, lca_bst.Key);
//}
Console.ReadLine();
}
public static void InOrder(BinaryTree tree)
{
InOrder(tree.Root);
}
public static void Main(string[] args)
{
// First Child / Next Sibling Tree
// Structure:
//
// A
// / | \ \
// B C D E
// / \ | | \
// F G H I J
// |
// K
//
Console.WriteLine("First Child / Next Sibling Tree:");
var myFCNSTree = new FCNSTree <char>('A');
myFCNSTree.Root.AddChild('B').AddChild('F').AddSibling('G');
myFCNSTree.Root.AddChild('C');
myFCNSTree.Root.AddChild('D').AddChild('H');
myFCNSTree.Root.AddChild('E').AddChild('I').AddSibling('J').AddChild('K');
myFCNSTree.PrintPreOrder(); // A B F G C D H E I J K
Console.WriteLine(myFCNSTree.Root); // A
Console.WriteLine(myFCNSTree.Root.FirstChild); // B
Console.WriteLine(myFCNSTree.Root.FirstChild.NextSibling.NextSibling.FirstChild); // H
Console.WriteLine("--------------------------------------------------------------");
// Binary Tree
// Structure:
//
// 4
// / \
// 2 6
// / \
// 1 3
//
Console.WriteLine("Binary Tree:");
var myBinaryTree = new BinaryTree <int>(4);
myBinaryTree.Root.AddLeftChild(2);
myBinaryTree.Root.AddRightChild(6);
myBinaryTree.Root.LeftChild.AddLeftChild(1);
myBinaryTree.Root.LeftChild.AddRightChild(3);
myBinaryTree.PrintPreOrder(); // 4 2 1 3 6
myBinaryTree.PrintInOrder(); // 1 2 3 4 6
myBinaryTree.PrintPostOrder(); // 1 3 2 6 4
Console.WriteLine("Size: " + myBinaryTree.Size);
Console.WriteLine("Height: " + myBinaryTree.Height);
var newTree = new BinaryTree <int>(4);
newTree.Root.AddLeftChild(2);
newTree.Root.AddRightChild(6);
myBinaryTree.Merge(12, myBinaryTree, newTree);
Console.WriteLine("PrettyPrint: " + myBinaryTree);
Console.WriteLine("--------------------------------------------------------------");
// Binary Search Tree
//
// Structure:
//
// 6
// / \
// 4 7
// / \
// 2 5
//
Console.WriteLine("Binary Search Tree:");
var myBinarySearchTree = new BinarySearchTree.BinarySearchTree(6);
myBinarySearchTree.Insert(4);
myBinarySearchTree.Insert(7);
myBinarySearchTree.Insert(2);
myBinarySearchTree.Insert(5);
Console.WriteLine("InOrder: " + myBinarySearchTree.InOrder());
Console.WriteLine("RemoveMin()");
myBinarySearchTree.Remove(2);
Console.WriteLine("InOrder: " + myBinarySearchTree.InOrder());
Console.WriteLine("FindMin: " + myBinarySearchTree.FindMin());
Console.WriteLine("FindMax: " + myBinarySearchTree.FindMax());
Console.WriteLine("PrettyPrint: " + myBinarySearchTree);
Console.WriteLine("--------------------------------------------------------------");
// Binary MinHeap
Console.WriteLine("Binary MinHeap:");
var myBinaryHeap = new BinaryMinHeap.BinaryMinHeap();
myBinaryHeap.Insert(2);
myBinaryHeap.Insert(10);
myBinaryHeap.Insert(8);
myBinaryHeap.Insert(1);
myBinaryHeap.Insert(6);
myBinaryHeap.Insert(9);
Console.WriteLine("Heap: " + myBinaryHeap);
Console.WriteLine("Value: " + myBinaryHeap.Value);
Console.WriteLine("Removed: " + myBinaryHeap.Remove());
Console.WriteLine("Removed: " + myBinaryHeap.Remove());
Console.WriteLine("Value: " + myBinaryHeap.Value);
Console.WriteLine("Removed: " + myBinaryHeap.Remove());
Console.WriteLine("Removed: " + myBinaryHeap.Remove());
Console.WriteLine("Value: " + myBinaryHeap.Value);
Console.WriteLine("Heap: " + myBinaryHeap);
Console.WriteLine("--------------------------------------------------------------");
}
public BinaryTree(T value, BinaryTree <T> leftChild = null, BinaryTree <T> rightChild = null)
{
this.Value = value;
this.Left = leftChild;
this.Right = rightChild;
}
public bool remove(T val)
{
//Проверяем, существует ли данный узел
BinaryTree <T> tree = search(val);
if (tree == null)
{
//Если узла не существует, вернем false
return(false);
}
BinaryTree <T> curTree;
//Если удаляем корень
if (tree == this)
{
if (tree.right != null)
{
curTree = tree.right;
}
else
{
curTree = tree.left;
}
while (curTree.left != null)
{
curTree = curTree.left;
}
T temp = curTree.val;
this.remove(temp);
tree.val = temp;
return(true);
}
//Удаление листьев
if (tree.left == null && tree.right == null && tree.parent != null)
{
if (tree == tree.parent.left)
{
tree.parent.left = null;
}
else
{
tree.parent.right = null;
}
return(true);
}
//Удаление узла, имеющего левое поддерево, но не имеющее правого поддерева
if (tree.left != null && tree.right == null)
{
//Меняем родителя
tree.left.parent = tree.parent;
if (tree == tree.parent.left)
{
tree.parent.left = tree.left;
}
else if (tree == tree.parent.right)
{
tree.parent.right = tree.left;
}
return(true);
}
//Удаление узла, имеющего правое поддерево, но не имеющее левого поддерева
if (tree.left == null && tree.right != null)
{
//Меняем родителя
tree.right.parent = tree.parent;
if (tree == tree.parent.left)
{
tree.parent.left = tree.right;
}
else if (tree == tree.parent.right)
{
tree.parent.right = tree.right;
}
return(true);
}
//Удаляем узел, имеющий поддеревья с обеих сторон
if (tree.right != null && tree.left != null)
{
curTree = tree.right;
while (curTree.left != null)
{
curTree = curTree.left;
}
//Если самый левый элемент является первым потомком
if (curTree.parent == tree)
{
curTree.left = tree.left;
tree.left.parent = curTree;
curTree.parent = tree.parent;
if (tree == tree.parent.left)
{
tree.parent.left = curTree;
}
else if (tree == tree.parent.right)
{
tree.parent.right = curTree;
}
return(true);
}
//Если самый левый элемент НЕ является первым потомком
else
{
if (curTree.right != null)
{
curTree.right.parent = curTree.parent;
}
curTree.parent.left = curTree.right;
curTree.right = tree.right;
curTree.left = tree.left;
tree.left.parent = curTree;
tree.right.parent = curTree;
curTree.parent = tree.parent;
if (tree == tree.parent.left)
{
tree.parent.left = curTree;
}
else if (tree == tree.parent.right)
{
tree.parent.right = curTree;
}
return(true);
}
}
return(false);
}
public BinaryTree(T val, BinaryTree <T> parent)
{
this.val = val;
this.parent = parent;
}
