Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Write a Program to Find the Maximum Depth or Height of a Tree in C++
In this problem, we are given a binary tree. Our task is to write a program to find the maximum depth or height of the given tree.
Let’s take an example to understand the problem,
The height of the tree is 3.
To find the maximum height of a tree, we will check the heights of its left and right subtree and add one to the maximum of both. This is a recursive process that will continue this the last node is of the tree is found and one is added progressively to find the height of the sub-trees.
Above example solved using this method.
Finding the height of tree i.e. height(3) = max(height(5),height(7)) + 1.
For this, we will calculate the height of nodes with values 5 and 7.
height(5) = max(height(1),height(9)) + 1 and
height(7) = 1, it has no subtree that can be formed.
Similarly, height(1) = height(9) = 1
height(5) = max(1,1) +1 = 2
height(3) = max(height(5),height(7)) + 1 = max(2,1) + 1 = 3.
So the height becomes 3.
Program to illustrate the solution,
Example
#include <iostream>
using namespace std;
class node {
public:
int data;
node* left;
node* right;
};
int height(node* node) {
if (node == NULL)
return 0;
else {
int lDepth = height(node->left);
int rDepth = height(node->right);
if (lDepth > rDepth)
return(lDepth + 1);
else return(rDepth + 1);
}
}
node* insertNode(int data) {
node* Node = new node();
Node->data = data;
Node->left = NULL;
Node->right = NULL;
return(Node);
}
int main() {
node *root = insertNode(4);
root->left = insertNode(5);
root->right = insertNode(0);
root->left->left = insertNode(1);
root->left->right = insertNode(9);
cout<<"The height of the given binary tree is "<<height(root);
return 0;
}Output
The height of the given binary tree is 3
515 Views
