C Programming Examples on Trees

C Programming Examples - Trees

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:

  1. C Programs on Binary Tree
  2. C Programs on Binary Search Tree
  3. C Programs on Tree
  4. C Programs on AVL Tree
  5. C Programs on Nodes of a Tree
  6. C Programs on BFS and DFS Traversals
  7. C Programs on Tree Traversal
  8. C Programs on Inorder Traversal of a Binary Tree
  9. 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

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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

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