A tree is a nonlinear hierarchical data structure made up of nodes connected by edges. A binary tree is a tree where each element has only two children, one on the left and one on the right. A binary search tree is a root binary tree in which each inner node has a key higher than all keys in the node’s left subtree but lower than keys in the node’s right subtree. An AVL tree is a self-balancing binary search tree (BST) in which the left and right nodes of the tree are balanced.
Basic Operations of Binary Search Tree:
- Insert: Inserts an element in a tree.
- Delete: Removes an element from the tree.
- Search: Search for a specific element in the tree.
Tree Traversals:
Traversal is the process of visiting all nodes of a tree in a certain way and printing their values. There are three ways to traverse the tree:
- In-order Traversal: visits left subtree, node, right subtree.
- Pre-order Traversal: visits each node before its children
- Post-order Traversal: visits each node after its children.
The following section contains various C programs on trees, binary trees, binary search trees, AVL trees, and nodes of a tree. It also covers various programs on Tree traversals such as bfs traversal, dfs traversal, inorder traversal, preorder, and postorder traversals. Each sample program on trees includes a program description, C code, and program output. All examples have been compiled and tested on Windows and Linux systems.
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Here is the listing of C programming examples on Trees:
- C Programs on Binary Tree
- C Programs on Binary Search Tree
- C Programs on Tree
- C Programs on AVL Tree
- C Programs on Nodes of a Tree
- C Programs on BFS and DFS Traversals
- C Programs on Tree Traversal
- C Programs on Inorder Traversal of a Binary Tree
- C Programs on Preorder & Postorder Traversals
1. C Programs on Binary Tree
| Program | Description |
|---|---|
| Binary Tree in C | C Program to Implement Binary Tree |
| Threaded Binary Tree in C | C Program to Implement Threaded Binary Tree |
| Splay Tree in C | C Program to Implement Splay Tree |
| Count Number of Nodes in Binary Tree in C | C Program to Count the Number of Nodes in Binary Tree |
| Sum of All Nodes in a Binary Tree in C | C Program to Find the Sum of All Nodes in a Binary Tree |
| Height and Depth of Binary Tree in C | C Program to Print Height and Depth of Binary Tree |
| Mirror Image of Binary Tree in C | C Program to Create Mirror Image of Binary Tree |
| Double Order Traversal of Binary Tree in C | C Program to Implement Double Order Traversal of a Binary Tree |
| Sorted Array to Balanced BST in C | C Program to Convert Sorted Array to Balanced BST |
| Binary Tree to BST in C | C Program to Convert Binary Tree to Binary Search Tree |
| C Program to Search a Node in Binary Tree | C Program to Search a Node in Binary Tree |
| Max Distance b/w Two Nodes in a Binary Tree in C | C Program to Find Maximum Distance between Two Nodes in a Binary Tree |
| C Program to Check if Binary Tree is Subtree of Another Tree | C Program to Check if Binary Tree is Subtree of Another Tree |
| Balanced Binary Tree in C | C Program to Create a Balanced Binary Tree of the Incoming Data |
| Largest Independent Set in Binary Tree in C | C Program to Find the Size of Largest Independent Set (LIS) in a Binary Tree |
2. C Programs on Binary Search Tree
| Program | Description |
|---|---|
| Binary Search Tree in C | C Program to Implement Binary Search Tree |
| Insertion in BST in C | C Program to Perform Insertion in Binary Search Tree |
| Deletion in BST in C | C Program to Perform Deletion in Binary Search Tree |
| C Program to Search an Element in BST | C Program to Perform Binary Search Tree Operations |
| BST Search in C | C Program to Search an Element in a Tree |
| Search Tree Element using Recursion in C | C Program to Search an Element in a Tree Recursively |
| C Program to Find Min & Max Element in BST | C Program to Find Minimum and Maximum Element in Binary Search Tree |
| Check if a Tree is BST in C | C Program to Check if a Tree is Binary Search Tree |
| BST Left Rotation in C | C Program to Perform Left and Right Rotation on a Binary Search Tree |
| Lowest Common Ancestor in C | C Program to Find the Lowest Common Ancestor of a Binary Search Tree |
| Vertical Sum in BST in C | C Program to Find the Total Columns/Vertical Lines of a Binary Search Tree |
3. C Programs on Tree
| Program | Description |
|---|---|
| Ternary Tree in C | C Program to Implement Ternary Tree |
| Segment Tree in C | C Program to Implement Segment Tree |
| Interval Tree in C | C Program to Implement Interval Tree |
| Range Tree in C | C Program to Implement Range Tree |
| B Tree in C | C Program to Implement a B Tree |
| Create Tree in C | C Program to Construct a Tree and Perform Tree Operations |
| Find Height of Tree using Recursion in C | C Program to Find the Height of Tree using Recursion |
| Check if Two Trees are Mirror in C | C Program to Check if Two Trees are Mirror |
| Create Mirror Tree in C | C Program to Create a Mirror Copy of a Tree |
| Create Expression Tree from Postfix Expression in C | C Program to Create Expression Tree from Postfix Expression |
| Maximum Independent Set Tree in C | C Program to Find the Largest Independent Set in Binary Tree |
4. C Programs on AVL Tree
| Program | Description |
|---|---|
| AVL Tree in C | C Program to Implement AVL Tree |
| BST is AVL Tree or Not in C | C Program to Check if a Binary Tree is an AVL Tree or Not |
| AVL Tree Operations in C | C Program to Perform AVL Tree Operations |
5. C Programs on Nodes of a Tree
| Program | Description |
|---|---|
| Sum of all Nodes in a Tree in C | C Program to Find the Sum of All Nodes in a Tree |
| C Program to Count Leaf Nodes in a Tree | C Program to Count Leaf Nodes in a Tree |
| C Program to Count Non-Leaf Nodes in a Tree | C Program to Count Non Leaf Nodes in a Tree |
| Print all Paths from Root to Leaf in a Tree in C | C Program to Print all Paths from Root to Leaf in a Tree |
| Print the Nodes at Odd Levels of a Tree in C | C Program to Print Only Odd Numbered Levels of a Tree |
| Print All Nodes of Nth Level in Single Line in C | C Program to Print All Nodes of Nth Level in Single Line |
| Print Left View of a Tree in C | C Program to Print Left View of a Tree |
| Boundary Traversal of Binary Tree in C | C Program to Print Border of a Tree in Anticlockwise Direction |
| Find Common Ancestor and Path in C | C Program to Find the Common Ancestor and Path |
| Nearest Common Ancestor in C | C Program to Find the Nearest Common Ancestor |
| Find Nearest Sibling of a Node in Tree in C | C Program to Find Nearest Sibling of a Node in Tree |
| Sum of Nodes at Each Level of a Tree in C | C Program to Find the Summation of Node Values at Row or Level |
6. C Programs on BFS and DFS Traversals
| Program | Description |
|---|---|
| BFS Program in c | C Program to Implement BFS |
| Display Tree Nodes using BFS Traversal in C | C Program to Display Tree Nodes using BFS Traversal |
| Mirror Tree using BFS Traversal in C | C Program to Create a Mirror Copy of a Tree and Display using BFS Traversal |
| DFS Tree Traversal using Recursion in C | C Program for Depth First Binary Tree Search using Recursion |
| DFS Tree Traversal without Recursion in C | C Program for Depth First Binary Tree Search without using Recursion |
7. C Programs on Tree Traversal
| Program | Description |
|---|---|
| Tree Traversal using Recursion in C | C Program to Traverse the Tree using Recursion |
| Tree Traversal without Recursion in C | C Program to Traverse the Tree without Recursion |
| Level Order Traversal using Recursion in C | C Program for Level Order Traversal of a Tree using Recursion |
| Spiral Order Traversal using Recursion in C | C Program for Spiral Order Traversal of a Tree using Recursion |
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8. C Programs on Inorder Traversal of a Binary Tree
| Program | Description |
|---|---|
| Find Nth Node of Inorder Traversal in C | C Program to Find Nth Node of Inorder Traversal |
| Find Max Value in Tree using Inorder Traversal in C | C Program to Find Maximum Value in Tree using Inorder Traversal |
| Display 2 Longest Distance Nodes using Inorder Traversal in C | C Program to Find Two Longest Distance Nodes using Inorder Traversal |
| External Sorting using Btree & Inorder Traversal in C | C Program to Implement External Sorting using B Tree and Inorder Traversal |
| Construct Binary Tree from Postorder & Inorder in C | C Program to Construct Binary Tree from Postorder and Inorder |
| BST Deletion & Inorder Traversal in C | C Program to Construct a Binary Search Tree and Perform Deletion and Inorder Traversal |
| Inorder Traversal using Recursion in C | C Program to Perform Inorder Traversal of a Binary Tree using Recursion |
| Inorder Traversal without Recursion in C | C Program to Perform Inorder Traversal of a Binary Tree without using Recursion |
9. C Programs on Preorder & Postorder Traversals
| Program | Description |
|---|---|
| Preorder Traversal using Recursion in C | C Program to Perform Preorder Traversal of a Binary Tree using Recursion |
| Preorder Traversal without Recursion in C | C Program to Perform Preorder Traversal of a Binary Tree without using Recursion |
| Postorder Traversal using Recursion in C | C Program to Perform Postorder Traversal of a Binary Tree using Recursion |
| Postorder Traversal without Recursion in C | C Program to Perform Postorder Traversal of a Binary Tree without using Recursion |
