Find maximum in binary tree in C

March 9, 2023

Maximum in Binary Tree in C 

Given a binary tree, we need to find the maximum element in the binary tree. As we need to visit each node present in the tree, we can use any tree traversal or recursion. In this page, Recursion is used.

Maximum in binary tree

Find Maximum In Binary Tree In C

Algorithm :

  • If root is NULL, return minimum integer.
  • Otherwise, recursive call the function for left and right subtree.
  • Return the maximum value that is max of the right subtree, left subtree and the data present in root.
Find maximum in binary tree in C
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Find size of the Binary tree

Find the height of binary tree

Check whether two tree are identical

Spiral Order traversal of Tree

Check If binary tree if Foldable or not

Code For Find The Maximum In Binary Tree In C

Run 
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>

struct Node
{
  int data;
  struct Node *left, *right;
};

struct Node *newNode (int data)
{
  struct Node *node = (struct Node *) malloc (sizeof (struct Node));
  node->data = data;
  node->left = node->right = NULL;
  return (node);
}

int findMax (struct Node *root)
{
  if (root == NULL)
    return INT_MIN;

  int res = root->data;
  int lres = findMax (root->left);
  int rres = findMax (root->right);
  if (lres > res)
    res = lres;
  if (rres > res)
    res = rres;
  return res;
}

int main ()
{
  struct Node *NewRoot = NULL;
  struct Node *root = newNode (12);
  root->left = newNode (17);
  root->right = newNode (50);
  root->left->right = newNode (67);
  root->left->right->left = newNode (10);
  root->left->right->right = newNode (11);
  root->right->right = newNode (98);
  root->right->right->left = newNode (14);

  printf ("Maximum element is %d \n", findMax (root));

  return 0;
}

Output:

Maximum element is 98

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Introduction to Trees

Binary Trees

Binary Search Trees

Traversals

  • Traversal in Trees
  • Tree Traversals: Breadth-First Search (BFS) : C | C++ | Java
  • Tree Traversals: Depth First Search (DFS) : C | C++ | Java
  • Construct a Binary Tree from Postorder and Inorder

B – Trees

AVL Trees

  • AVL Trees
    • AVL Trees: Introduction
    • AVL Tree Insertion : C | C++ | Java
    • AVL Tree Deletion : C | C++ | Java
    • Insertion in a Binary Tree (Level Order) – C | C++ | Java
    • Searching in Binary Tree – C | C++ | Java
    • Searching in a Binary Search Tree – C | C++ | Java

Complete Programs for Trees

  • Depth First Traversals – C | C++ | Java
  • Level Order Traversal – C | C++ | Java
  • Construct Tree from given Inorder and Preorder traversals – C | C++ | Java
  • Construct Tree from given Postorder and Inorder traversals – C | C++ | Java
  • Construct Tree from given Postorder and Preorder traversal – C | C++ | Java
  • Find size of the Binary tree – C | C++ | Java
  • Find the height of binary tree – C | C++ | Java
  • Find maximum in binary tree – C | C++ | Java
  • Check whether two tree are identical- C| C++| Java
  • Spiral Order traversal of Tree- C | C++| Java
  • Level Order Traversal Line by Line – C | C++| Java
  • Hand shaking lemma and some Impotant Tree Properties.
  • Check If binary tree if Foldable or not.- C| C++| Java
  • check whether tree is Symmetric – C| C++| Java.
  • Check for Children-Sum in Binary Tree- C|C++| Java
  • Sum of all nodes in Binary Tree- C | C++ | Java
  • Lowest Common Ancestor in Binary Tree- C | C++ | Java

Introduction to Trees

Binary Trees

Binary Search Trees

Traversals

  • Traversal in Trees
  • Tree Traversals: Breadth-First Search (BFS) : C | C++ | Java
  • Tree Traversals: Depth First Search (DFS) : C | C++ | Java
  • Construct a Binary Tree from Postorder and Inorder

B – Trees

AVL Trees

  • AVL Trees
    • AVL Trees: Introduction
    • AVL Tree Insertion :  C | C++ | Java
    • AVL Tree Deletion : C | C++ | Java
    • Insertion in a Binary Tree (Level Order) – C | C++ | Java
    • Searching in Binary Tree – C | C++ | Java
    • Searching in a Binary Search Tree – C | C++ | Java

Complete Programs for Trees

  • Depth First Traversals – C | C++ | Java
  • Level Order Traversal – C | C++ | Java
  • Construct Tree from given Inorder and Preorder traversals – C | C++ | Java
  • Construct Tree from given Postorder and Inorder traversals – C | C++ | Java
  • Construct Tree from given Postorder and Preorder traversal – C | C++ | Java
  • Find size of the Binary tree – C | C++ | Java
  • Find the height of binary tree – C | C++ | Java
  • Find maximum in binary tree – C | C++ | Java
  • Check whether two tree are identical- C| C++| Java
  • Spiral Order traversal of Tree- C | C++| Java
  • Level Order Traversal LIne by Line – C | C++| Java
  • Hand shaking lemma and some Impotant Tree Properties.
  • Check If binary tree if Foldable or not.- C| C++| Java
  • check whether tree is Symmetric  C| C++| Java.
  • Check for Children-Sum in Binary Tree- C|C++| Java
  • Sum of all nodes in Binary Tree- C | C++ | Java
  • Lowest Common Ancestor in Binary Tree. C | C++ | Java