Check if a given Binary Tree is Sumtree

Here given code implementation process.

/*
    C Program 
    Check if a given Binary Tree is Sumtree
*/
#include <stdio.h>
#include <stdlib.h>

//Binary Tree node
struct Node
{
	int data;
	struct Node *left, *right;
};

//This is creating a binary tree node and return new node
struct Node *get_node(int data)
{
	// Create dynamic node
	struct Node *new_node = (struct Node *) malloc(sizeof(struct Node));
	if (new_node != NULL)
	{
		//Set data and pointer values
		new_node->data = data;
		new_node->left = NULL;
		new_node->right = NULL;
	}
	else
	{
		//This is indicates, segmentation fault or memory overflow problem
		printf("Memory Overflow\n");
	}
	//return new node
	return new_node;
}

//Display pre order elements
void print_preorder(struct Node *node)
{
	if (node != NULL)
	{
		//Print node value
		printf("  %d", node->data);
		print_preorder(node->left);
		print_preorder(node->right);
	}
}

//Handles the request of display the element of tree 
void print_tree(struct Node *root)
{
	if (root == NULL)
	{
		return;
	}
	// Display tree elements in three formats
	printf("\n Preorder : ");
	print_preorder(root);
	printf("\n");
}

//Determine whether given binary tree is subtree or not
int check_sum_tree(struct Node *node, int *status)
{
	if (node == NULL || *status == 0)
	{
		return 0;
	}
	else if (node->left == NULL && node->right == NULL)
	{
		return node->data;
	}
	else
	{
		//recursively calculate sum of left and right subtree
		int a = check_sum_tree(node->left, status);
		int b = check_sum_tree(node->right, status);
		if ( *status == 1)
		{
			if ((a + b) == node->data)
			{
				return (a + b) *2;
			}
			else
			{
				// violation of subtree sum 
				*status = 0;
			}
		}
		return 0;
	}
}

// Handles the request of to find sum tree exist in binary tree
void is_sum_tree(struct Node *root)
{
	if (root == NULL)
	{
		return;
	}
	else
	{
		int status = 1;
		print_tree(root);
		check_sum_tree(root, & status);
		if (status == 1)
		{
			printf(" Is Sum Tree \n");
		}
		else
		{
			printf(" Is Not Sum Tree \n");
		}
	}
}
int main()
{
	struct Node *root1 = NULL;
	/* 
	Constructing binary tree
	-----------------------
	         96
	        /  \
	       /    \
	     37     11
	     / \    /  \
	    18  1  5    6
	     \
	      9
	     /  \
	    3    6
	*/
	root1 = get_node(96);
	root1->left = get_node(37);
	root1->left->right = get_node(1);
	root1->right = get_node(11);
	root1->right->right = get_node(6);
	root1->right->left = get_node(5);
	root1->left->left = get_node(18);
	root1->left->left->right = get_node(9);
	root1->left->left->right->right = get_node(6);
	root1->left->left->right->left = get_node(3);
	is_sum_tree(root1);
	struct Node *root2 = NULL;
	/* 
	Constructing binary tree
	-----------------------
	         36
	        /  \
	       /    \
	      2      17
	     / \    /  \
	    1   1  5    6
	   
	*/
	root2 = get_node(36);
	root2->left = get_node(2);
	root2->left->right = get_node(1);
	root2->right = get_node(17);
	root2->right->right = get_node(6);
	root2->right->left = get_node(5);
	root2->left->left = get_node(1);
	/*
	When subtree sum is not equal to parent node
	----------------------------------------
	  17 => problem here
	 /  \
	5    6
	*/
	is_sum_tree(root2);
	return 0;
}

Output

 Preorder :   96  37  18  9  3  6  1  11  5  6
 Is Sum Tree

 Preorder :   36  2  1  1  17  5  6
 Is Not Sum Tree
/*
    Java Program 
    Check if a given Binary Tree is Sumtree
*/
// Binary Tree node
class Node
{
	public int data;
	public Node left;
	public Node right;
	public Node(int data)
	{
		// Set node value
		this.data = data;
		this.left = null;
		this.right = null;
	}
}
class Result
{
	public boolean status;
	public Result()
	{
		this.status = true;
	}
}
//Define Binary Tree 
public class BinaryTree
{
	public Node root;
	public BinaryTree()
	{
		//Set root of tree
		this.root = null;
	}
	//Display pre order elements
	public void print_preorder(Node node)
	{
		if (node != null)
		{
			//Print node value
			System.out.print(" " + node.data);
			print_preorder(node.left);
			print_preorder(node.right);
		}
	}
	//Handles the request of display the element of tree 
	public void print_tree(Node root)
	{
		if (root == null)
		{
			return;
		}
		// Display tree elements in three formats
		System.out.print("\n Preorder : ");
		print_preorder(root);
		System.out.print("\n");
	}
	//Determine whether given binary tree is subtree or not
	public int check_sum_tree(Node node, Result output)
	{
		if (node == null || output.status == false)
		{
			return 0;
		}
		else if (node.left == null && node.right == null)
		{
			return node.data;
		}
		else
		{
			//recursively calculate sum of left and right subtree
			int a = check_sum_tree(node.left, output);
			int b = check_sum_tree(node.right, output);
			if (output.status == true)
			{
				if ((a + b) == node.data)
				{
					return (a + b) * 2;
				}
				else
				{
					// violation of subtree sum 
					output.status = false;
				}
			}
			return 0;
		}
	}
	// Handles the request of to find sum tree exist in binary tree
	public void is_sum_tree()
	{
		if (this.root == null)
		{
			return;
		}
		else
		{
			Result output = new Result();
			this.print_tree(this.root);
			this.check_sum_tree(this.root, output);
			if (output.status == true)
			{
				System.out.print(" Is Sum Tree \n");
			}
			else
			{
				System.out.print(" Is Not Sum Tree \n");
			}
		}
	}
	public static void main(String[] args)
	{
		//Create tree object
		BinaryTree tree1 = new BinaryTree();
		BinaryTree tree2 = new BinaryTree();
		/*  
		Constructing binary tree
		-----------------------
		         96
		        /  \
		       /    \
		     37     11
		     / \    /  \
		    18  1  5    6
		     \
		      9
		     /  \
		    3    6
		*/
		tree1.root = new Node(96);
		tree1.root.left = new Node(37);
		tree1.root.left.right = new Node(1);
		tree1.root.right = new Node(11);
		tree1.root.right.right = new Node(6);
		tree1.root.right.left = new Node(5);
		tree1.root.left.left = new Node(18);
		tree1.root.left.left.right = new Node(9);
		tree1.root.left.left.right.right = new Node(6);
		tree1.root.left.left.right.left = new Node(3);
		tree1.is_sum_tree();
		/*  
		Constructing binary tree
		-----------------------
		     36
		    /  \
		   /    \
		  2      17
		 / \    /  \
		1   1  5    6
		   
		*/
		tree2.root = new Node(36);
		tree2.root.left = new Node(2);
		tree2.root.left.right = new Node(1);
		tree2.root.right = new Node(17);
		tree2.root.right.right = new Node(6);
		tree2.root.right.left = new Node(5);
		tree2.root.left.left = new Node(1);
		/*
		When subtree sum is not equal to parent node
		----------------------------------------
		  17 => problem here
		 /  \
		5    6

		*/
		tree2.is_sum_tree();
	}
}

Output

 Preorder :  96 37 18 9 3 6 1 11 5 6
 Is Sum Tree

 Preorder :  36 2 1 1 17 5 6
 Is Not Sum Tree
// Include header file
#include <iostream>
using namespace std;

/*
    C++ Program 
    Check if a given Binary Tree is Sumtree
*/

//  Binary Tree node
class Node
{
	public: 
    int data;
	Node *left;
	Node *right;
	Node(int data)
	{
		//  Set node value
		this->data = data;
		this->left = NULL;
		this->right = NULL;
	}
};
class Result
{
	public: 
    bool status;
	Result()
	{
		this->status = true;
	}
};
// Define Binary Tree
class BinaryTree
{
	public: Node *root;
	BinaryTree()
	{
		// Set root of tree
		this->root = NULL;
	}
	// Display pre order elements
	void print_preorder(Node *node)
	{
		if (node != NULL)
		{
			// Print node value
			cout << " " << node->data;
			this->print_preorder(node->left);
			this->print_preorder(node->right);
		}
	}
	// Handles the request of display the element of tree
	void print_tree(Node *root)
	{
		if (root == NULL)
		{
			return;
		}
		//  Display tree elements in three formats
		cout << "\n Preorder : ";
		this->print_preorder(root);
		cout << "\n";
	}
	// Determine whether given binary tree is subtree or not
	int check_sum_tree(Node *node, Result *output)
	{
		if (node == NULL || output->status == false)
		{
			return 0;
		}
		else if (node->left == NULL && node->right == NULL)
		{
			return node->data;
		}
		else
		{
			// recursively calculate sum of left and right subtree
			int a = this->check_sum_tree(node->left, output);
			int b = this->check_sum_tree(node->right, output);
			if (output->status == true)
			{
				if ((a + b) == node->data)
				{
					return (a + b) *2;
				}
				else
				{
					//  violation of subtree sum
					output->status = false;
				}
			}
			return 0;
		}
	}
	//  Handles the request of to find sum tree exist in binary tree
	void is_sum_tree()
	{
		if (this->root == NULL)
		{
			return;
		}
		else
		{
			Result *output = new Result();
			this->print_tree(this->root);
			this->check_sum_tree(this->root, output);
			if (output->status == true)
			{
				cout << " Is Sum Tree \n";
			}
			else
			{
				cout << " Is Not Sum Tree \n";
			}
		}
	}
};
int main()
{
	// Create tree object
	BinaryTree tree1 = BinaryTree();
	BinaryTree tree2 = BinaryTree();
	/*
			Constructing binary tree
			-----------------------
			         96
			        /  \
			       /    \
			     37     11
			     / \    /  \
			    18  1  5    6
			     \
			      9
			     /  \
			    3    6
			*/
	tree1.root = new Node(96);
	tree1.root->left = new Node(37);
	tree1.root->left->right = new Node(1);
	tree1.root->right = new Node(11);
	tree1.root->right->right = new Node(6);
	tree1.root->right->left = new Node(5);
	tree1.root->left->left = new Node(18);
	tree1.root->left->left->right = new Node(9);
	tree1.root->left->left->right->right = new Node(6);
	tree1.root->left->left->right->left = new Node(3);
	tree1.is_sum_tree();
	/*
			Constructing binary tree
			-----------------------
			     36
			    /  \
			   /    \
			  2      17
			 / \    /  \
			1   1  5    6
			   
			*/
	tree2.root = new Node(36);
	tree2.root->left = new Node(2);
	tree2.root->left->right = new Node(1);
	tree2.root->right = new Node(17);
	tree2.root->right->right = new Node(6);
	tree2.root->right->left = new Node(5);
	tree2.root->left->left = new Node(1);
	/*
			When subtree sum is not equal to parent node
			----------------------------------------
			  17 => problem here
			 /  \
			5    6

			*/
	tree2.is_sum_tree();
	return 0;
}

Output

 Preorder :  96 37 18 9 3 6 1 11 5 6
 Is Sum Tree

 Preorder :  36 2 1 1 17 5 6
 Is Not Sum Tree
// Include namespace system
using System;

/*
    C# Program 
    Check if a given Binary Tree is Sumtree
*/

//  Binary Tree node
public class Node
{
	public int data;
	public Node left;
	public Node right;
	public Node(int data)
	{
		//  Set node value
		this.data = data;
		this.left = null;
		this.right = null;
	}
}
public class Result
{
	public Boolean status;
	public Result()
	{
		this.status = true;
	}
}
// Define Binary Tree
public class BinaryTree
{
	public Node root;
	public BinaryTree()
	{
		// Set root of tree
		this.root = null;
	}
	// Display pre order elements
	public void print_preorder(Node node)
	{
		if (node != null)
		{
			// Print node value
			Console.Write(" " + node.data);
			print_preorder(node.left);
			print_preorder(node.right);
		}
	}
	// Handles the request of display the element of tree
	public void print_tree(Node root)
	{
		if (root == null)
		{
			return;
		}
		//  Display tree elements in three formats
		Console.Write("\n Preorder : ");
		print_preorder(root);
		Console.Write("\n");
	}
	// Determine whether given binary tree is subtree or not
	public int check_sum_tree(Node node, Result output)
	{
		if (node == null || output.status == false)
		{
			return 0;
		}
		else if (node.left == null && node.right == null)
		{
			return node.data;
		}
		else
		{
			// recursively calculate sum of left and right subtree
			int a = check_sum_tree(node.left, output);
			int b = check_sum_tree(node.right, output);
			if (output.status == true)
			{
				if ((a + b) == node.data)
				{
					return (a + b) * 2;
				}
				else
				{
					//  violation of subtree sum
					output.status = false;
				}
			}
			return 0;
		}
	}
	//  Handles the request of to find sum tree exist in binary tree
	public void is_sum_tree()
	{
		if (this.root == null)
		{
			return;
		}
		else
		{
			Result output = new Result();
			this.print_tree(this.root);
			this.check_sum_tree(this.root, output);
			if (output.status == true)
			{
				Console.Write(" Is Sum Tree \n");
			}
			else
			{
				Console.Write(" Is Not Sum Tree \n");
			}
		}
	}
	public static void Main(String[] args)
	{
		// Create tree object
		BinaryTree tree1 = new BinaryTree();
		BinaryTree tree2 = new BinaryTree();
		/*  
				Constructing binary tree
				-----------------------
				         96
				        /  \
				       /    \
				     37     11
				     / \    /  \
				    18  1  5    6
				     \
				      9
				     /  \
				    3    6
				*/
		tree1.root = new Node(96);
		tree1.root.left = new Node(37);
		tree1.root.left.right = new Node(1);
		tree1.root.right = new Node(11);
		tree1.root.right.right = new Node(6);
		tree1.root.right.left = new Node(5);
		tree1.root.left.left = new Node(18);
		tree1.root.left.left.right = new Node(9);
		tree1.root.left.left.right.right = new Node(6);
		tree1.root.left.left.right.left = new Node(3);
		tree1.is_sum_tree();
		/*  
				Constructing binary tree
				-----------------------
				     36
				    /  \
				   /    \
				  2      17
				 / \    /  \
				1   1  5    6
				   
				*/
		tree2.root = new Node(36);
		tree2.root.left = new Node(2);
		tree2.root.left.right = new Node(1);
		tree2.root.right = new Node(17);
		tree2.root.right.right = new Node(6);
		tree2.root.right.left = new Node(5);
		tree2.root.left.left = new Node(1);
		/*
				When subtree sum is not equal to parent node
				----------------------------------------
				  17 => problem here
				 /  \
				5    6

				*/
		tree2.is_sum_tree();
	}
}

Output

 Preorder :  96 37 18 9 3 6 1 11 5 6
 Is Sum Tree

 Preorder :  36 2 1 1 17 5 6
 Is Not Sum Tree
<?php
/*
    Php Program 
    Check if a given Binary Tree is Sumtree
*/

//  Binary Tree node
class Node
{
	public $data;
	public $left;
	public $right;

	function __construct($data)
	{
		//  Set node value
		$this->data = $data;
		$this->left = null;
		$this->right = null;
	}
}
class Result
{
	public $status;

	function __construct()
	{
		$this->status = true;
	}
}
// Define Binary Tree
class BinaryTree
{
	public $root;

	function __construct()
	{
		// Set root of tree
		$this->root = null;
	}
	// Display pre order elements
	public	function print_preorder($node)
	{
		if ($node != null)
		{
			// Print node value
			echo " ". $node->data;
			$this->print_preorder($node->left);
			$this->print_preorder($node->right);
		}
	}
	// Handles the request of display the element of tree
	public	function print_tree($root)
	{
		if ($root == null)
		{
			return;
		}
		//  Display tree elements in three formats
		echo "\n Preorder : ";
		$this->print_preorder($root);
		echo "\n";
	}
	// Determine whether given binary tree is subtree or not
	public	function check_sum_tree($node, $output)
	{
		if ($node == null || $output->status == false)
		{
			return 0;
		}
		else if ($node->left == null && $node->right == null)
		{
			return $node->data;
		}
		else
		{
			// recursively calculate sum of left and right subtree
			$a = $this->check_sum_tree($node->left, $output);
			$b = $this->check_sum_tree($node->right, $output);
			if ($output->status == true)
			{
				if (($a + $b) == $node->data)
				{
					return ($a + $b) * 2;
				}
				else
				{
					//  violation of subtree sum
					$output->status = false;
				}
			}
			return 0;
		}
	}
	//  Handles the request of to find sum tree exist in binary tree
	public	function is_sum_tree()
	{
		if ($this->root == null)
		{
			return;
		}
		else
		{
			$output = new Result();
			$this->print_tree($this->root);
			$this->check_sum_tree($this->root, $output);
			if ($output->status == true)
			{
				echo " Is Sum Tree \n";
			}
			else
			{
				echo " Is Not Sum Tree \n";
			}
		}
	}
}

function main()
{
	// Create tree object
	$tree1 = new BinaryTree();
	$tree2 = new BinaryTree();
	/*  
			Constructing binary tree
			-----------------------
			         96
			        /  \
			       /    \
			     37     11
			     / \    /  \
			    18  1  5    6
			     \
			      9
			     /  \
			    3    6
	*/
	$tree1->root = new Node(96);
	$tree1->root->left = new Node(37);
	$tree1->root->left->right = new Node(1);
	$tree1->root->right = new Node(11);
	$tree1->root->right->right = new Node(6);
	$tree1->root->right->left = new Node(5);
	$tree1->root->left->left = new Node(18);
	$tree1->root->left->left->right = new Node(9);
	$tree1->root->left->left->right->right = new Node(6);
	$tree1->root->left->left->right->left = new Node(3);
	$tree1->is_sum_tree();
	/*  
			Constructing binary tree
			-----------------------
			     36
			    /  \
			   /    \
			  2      17
			 / \    /  \
			1   1  5    6
			   
	*/
	$tree2->root = new Node(36);
	$tree2->root->left = new Node(2);
	$tree2->root->left->right = new Node(1);
	$tree2->root->right = new Node(17);
	$tree2->root->right->right = new Node(6);
	$tree2->root->right->left = new Node(5);
	$tree2->root->left->left = new Node(1);
	/*
			When subtree sum is not equal to parent node
			----------------------------------------
			  17 => problem here
			 /  \
			5    6

	*/
	$tree2->is_sum_tree();
}
main();

Output

 Preorder :  96 37 18 9 3 6 1 11 5 6
 Is Sum Tree

 Preorder :  36 2 1 1 17 5 6
 Is Not Sum Tree
/*
    Node Js Program 
    Check if a given Binary Tree is Sumtree
*/

//  Binary Tree node
class Node
{
	constructor(data)
	{
		//  Set node value
		this.data = data;
		this.left = null;
		this.right = null;
	}
}
class Result
{
	constructor()
	{
		this.status = true;
	}
}
// Define Binary Tree
class BinaryTree
{
	constructor()
	{
		// Set root of tree
		this.root = null;
	}
	// Display pre order elements
	print_preorder(node)
	{
		if (node != null)
		{
			// Print node value
			process.stdout.write(" " + node.data);
			this.print_preorder(node.left);
			this.print_preorder(node.right);
		}
	}
	// Handles the request of display the element of tree
	print_tree(root)
	{
		if (root == null)
		{
			return;
		}
		//  Display tree elements in three formats
		process.stdout.write("\n Preorder : ");
		this.print_preorder(root);
		process.stdout.write("\n");
	}
	// Determine whether given binary tree is subtree or not
	check_sum_tree(node, output)
	{
		if (node == null || output.status == false)
		{
			return 0;
		}
		else if (node.left == null && node.right == null)
		{
			return node.data;
		}
		else
		{
			// recursively calculate sum of left and right subtree
			var a = this.check_sum_tree(node.left, output);
			var b = this.check_sum_tree(node.right, output);
			if (output.status == true)
			{
				if ((a + b) == node.data)
				{
					return (a + b) * 2;
				}
				else
				{
					//  violation of subtree sum
					output.status = false;
				}
			}
			return 0;
		}
	}
	//  Handles the request of to find sum tree exist in binary tree
	is_sum_tree()
	{
		if (this.root == null)
		{
			return;
		}
		else
		{
			var output = new Result();
			this.print_tree(this.root);
			this.check_sum_tree(this.root, output);
			if (output.status == true)
			{
				process.stdout.write(" Is Sum Tree \n");
			}
			else
			{
				process.stdout.write(" Is Not Sum Tree \n");
			}
		}
	}
}

function main()
{
	// Create tree object
	var tree1 = new BinaryTree();
	var tree2 = new BinaryTree();
	/*  
			Constructing binary tree
			-----------------------
			         96
			        /  \
			       /    \
			     37     11
			     / \    /  \
			    18  1  5    6
			     \
			      9
			     /  \
			    3    6
			*/
	tree1.root = new Node(96);
	tree1.root.left = new Node(37);
	tree1.root.left.right = new Node(1);
	tree1.root.right = new Node(11);
	tree1.root.right.right = new Node(6);
	tree1.root.right.left = new Node(5);
	tree1.root.left.left = new Node(18);
	tree1.root.left.left.right = new Node(9);
	tree1.root.left.left.right.right = new Node(6);
	tree1.root.left.left.right.left = new Node(3);
	tree1.is_sum_tree();
	/*  
			Constructing binary tree
			-----------------------
			     36
			    /  \
			   /    \
			  2      17
			 / \    /  \
			1   1  5    6
			   
			*/
	tree2.root = new Node(36);
	tree2.root.left = new Node(2);
	tree2.root.left.right = new Node(1);
	tree2.root.right = new Node(17);
	tree2.root.right.right = new Node(6);
	tree2.root.right.left = new Node(5);
	tree2.root.left.left = new Node(1);
	/*
			When subtree sum is not equal to parent node
			----------------------------------------
			  17 => problem here
			 /  \
			5    6

			*/
	tree2.is_sum_tree();
}
main();

Output

 Preorder :  96 37 18 9 3 6 1 11 5 6
 Is Sum Tree

 Preorder :  36 2 1 1 17 5 6
 Is Not Sum Tree
#     Python 3 Program 
#     Check if a given Binary Tree is Sumtree

#  Binary Tree node
class Node :
	
	def __init__(self, data) :
		#  Set node value
		self.data = data
		self.left = None
		self.right = None
	

class Result :
	
	def __init__(self) :
		self.status = True
	

# Define Binary Tree 
class BinaryTree :
	
	def __init__(self) :
		# Set root of tree
		self.root = None
	
	# Display pre order elements
	def print_preorder(self, node) :
		if (node != None) :
			# Print node value
			print(" ", node.data, end = "")
			self.print_preorder(node.left)
			self.print_preorder(node.right)
		
	
	# Handles the request of display the element of tree 
	def print_tree(self, root) :
		if (root == None) :
			return
		
		#  Display tree elements in three formats
		print("\n Preorder : ", end = "")
		self.print_preorder(root)
		print("\n", end = "")
	
	# Determine whether given binary tree is subtree or not
	def check_sum_tree(self, node, output) :
		if (node == None or output.status == False) :
			return 0
		
		elif(node.left == None and node.right == None) :
			return node.data
		else :
			# recursively calculate sum of left and right subtree
			a = self.check_sum_tree(node.left, output)
			b = self.check_sum_tree(node.right, output)
			if (output.status == True) :
				if ((a + b) == node.data) :
					return (a + b) * 2
				else :
					#  violation of subtree sum 
					output.status = False
				
			
			return 0
		
	
	#  Handles the request of to find sum tree exist in binary tree
	def is_sum_tree(self) :
		if (self.root == None) :
			return
		else :
			output = Result()
			self.print_tree(self.root)
			self.check_sum_tree(self.root, output)
			if (output.status == True) :
				print(" Is Sum Tree \n", end = "")
			else :
				print(" Is Not Sum Tree \n", end = "")
			
		
	

def main() :
	# Create tree object
	tree1 = BinaryTree()
	tree2 = BinaryTree()
	#   
	# 		Constructing binary tree
	# 		-----------------------
	# 		         96
	# 		        /  \
	# 		       /    \
	# 		     37     11
	# 		     / \    /  \
	# 		    18  1  5    6
	# 		     \
	# 		      9
	# 		     /  \
	# 		    3    6
	# 		
	
	tree1.root = Node(96)
	tree1.root.left = Node(37)
	tree1.root.left.right = Node(1)
	tree1.root.right = Node(11)
	tree1.root.right.right = Node(6)
	tree1.root.right.left = Node(5)
	tree1.root.left.left = Node(18)
	tree1.root.left.left.right = Node(9)
	tree1.root.left.left.right.right = Node(6)
	tree1.root.left.left.right.left = Node(3)
	tree1.is_sum_tree()
	#   
	# 		Constructing binary tree
	# 		-----------------------
	# 		     36
	# 		    /  \
	# 		   /    \
	# 		  2      17
	# 		 / \    /  \
	# 		1   1  5    6
	# 		   
	# 		
	
	tree2.root = Node(36)
	tree2.root.left = Node(2)
	tree2.root.left.right = Node(1)
	tree2.root.right = Node(17)
	tree2.root.right.right = Node(6)
	tree2.root.right.left = Node(5)
	tree2.root.left.left = Node(1)
	# 
	# 		When subtree sum is not equal to parent node
	# 		----------------------------------------
	# 		  17 => problem here
	# 		 /  \
	# 		5    6
	# 		
	
	tree2.is_sum_tree()

if __name__ == "__main__": main()

Output

 Preorder :   96  37  18  9  3  6  1  11  5  6
 Is Sum Tree

 Preorder :   36  2  1  1  17  5  6
 Is Not Sum Tree
#  Ruby Program 
#  Check if a given Binary Tree is Sumtree

#  Binary Tree node
class Node  
	# Define the accessor and reader of class Node  
	attr_reader :data, :left, :right
	attr_accessor :data, :left, :right
 
	
	def initialize(data) 
		#  Set node value
		self.data = data
		self.left = nil
		self.right = nil
	end

end

class Result  
	# Define the accessor and reader of class Result  
	attr_reader :status
	attr_accessor :status
 
	
	def initialize() 
		self.status = true
	end

end

# Define Binary Tree 
class BinaryTree  
	# Define the accessor and reader of class BinaryTree  
	attr_reader :root
	attr_accessor :root
 
	
	def initialize() 
		# Set root of tree
		self.root = nil
	end

	# Display pre order elements
	def print_preorder(node) 
		if (node != nil) 
			# Print node value
			print(" ", node.data)
			self.print_preorder(node.left)
			self.print_preorder(node.right)
		end

	end

	# Handles the request of display the element of tree 
	def print_tree(root) 
		if (root == nil) 
			return
		end

		#  Display tree elements in three formats
		print("\n Preorder : ")
		self.print_preorder(root)
		print("\n")
	end

	# Determine whether given binary tree is subtree or not
	def check_sum_tree(node, output) 
		if (node == nil || output.status == false) 
			return 0
		elsif(node.left == nil && node.right == nil) 
			return node.data
		else 
			# recursively calculate sum of left and right subtree
			a = self.check_sum_tree(node.left, output)
			b = self.check_sum_tree(node.right, output)
			if (output.status == true) 
				if ((a + b) == node.data) 
					return (a + b) * 2
				else 
					#  violation of subtree sum 
					output.status = false
				end

			end

			return 0
		end

	end

	#  Handles the request of to find sum tree exist in binary tree
	def is_sum_tree() 
		if (self.root == nil) 
			return
		else 
			output = Result.new()
			self.print_tree(self.root)
			self.check_sum_tree(self.root, output)
			if (output.status == true) 
				print(" Is Sum Tree \n")
			else 
				print(" Is Not Sum Tree \n")
			end

		end

	end

end

def main() 
	# Create tree object
	tree1 = BinaryTree.new()
	tree2 = BinaryTree.new()
	#   
	# 		Constructing binary tree
	# 		-----------------------
	# 		         96
	# 		        /  \
	# 		       /    \
	# 		     37     11
	# 		     / \    /  \
	# 		    18  1  5    6
	# 		     \
	# 		      9
	# 		     /  \
	# 		    3    6
	# 		
	
	tree1.root = Node.new(96)
	tree1.root.left = Node.new(37)
	tree1.root.left.right = Node.new(1)
	tree1.root.right = Node.new(11)
	tree1.root.right.right = Node.new(6)
	tree1.root.right.left = Node.new(5)
	tree1.root.left.left = Node.new(18)
	tree1.root.left.left.right = Node.new(9)
	tree1.root.left.left.right.right = Node.new(6)
	tree1.root.left.left.right.left = Node.new(3)
	tree1.is_sum_tree()
	#   
	# 		Constructing binary tree
	# 		-----------------------
	# 		     36
	# 		    /  \
	# 		   /    \
	# 		  2      17
	# 		 / \    /  \
	# 		1   1  5    6
	# 		   
	# 		
	
	tree2.root = Node.new(36)
	tree2.root.left = Node.new(2)
	tree2.root.left.right = Node.new(1)
	tree2.root.right = Node.new(17)
	tree2.root.right.right = Node.new(6)
	tree2.root.right.left = Node.new(5)
	tree2.root.left.left = Node.new(1)
	# 
	# 		When subtree sum is not equal to parent node
	# 		----------------------------------------
	# 		  17 => problem here
	# 		 /  \
	# 		5    6
	# 		
	
	tree2.is_sum_tree()
end

main()

Output

 Preorder :  96 37 18 9 3 6 1 11 5 6
 Is Sum Tree 

 Preorder :  36 2 1 1 17 5 6
 Is Not Sum Tree 
/*
    Scala Program 
    Check if a given Binary Tree is Sumtree
*/

//  Binary Tree node
class Node(var data: Int , var left: Node , var right: Node)
{
	def this(data: Int)
	{
		this(data, null, null);
	}
}
class Result(var status: Boolean)
{
	def this()
	{
		this(true);
	}
}
// Define Binary Tree
class BinaryTree(var root: Node)
{
	def this()
	{
		this(null);
	}
	// Display pre order elements
	def print_preorder(node: Node): Unit = {
		if (node != null)
		{
			// Print node value
			print(" " + node.data);
			print_preorder(node.left);
			print_preorder(node.right);
		}
	}
	// Handles the request of display the element of tree
	def print_tree(root: Node): Unit = {
		if (root == null)
		{
			return;
		}
		//  Display tree elements in three formats
		print("\n Preorder : ");
		print_preorder(root);
		print("\n");
	}
	// Determine whether given binary tree is subtree or not
	def check_sum_tree(node: Node, output: Result): Int = {
		if (node == null || output.status == false)
		{
			return 0;
		}
		else if (node.left == null && node.right == null)
		{
			return node.data;
		}
		else
		{
			// recursively calculate sum of left and right subtree
			var a: Int = check_sum_tree(node.left, output);
			var b: Int = check_sum_tree(node.right, output);
			if (output.status == true)
			{
				if ((a + b) == node.data)
				{
					return (a + b) * 2;
				}
				else
				{
					//  violation of subtree sum
					output.status = false;
				}
			}
			return 0;
		}
	}
	//  Handles the request of to find sum tree exist in binary tree
	def is_sum_tree(): Unit = {
		if (this.root == null)
		{
			return;
		}
		else
		{
			var output: Result = new Result();
			this.print_tree(this.root);
			this.check_sum_tree(this.root, output);
			if (output.status == true)
			{
				print(" Is Sum Tree \n");
			}
			else
			{
				print(" Is Not Sum Tree \n");
			}
		}
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		// Create tree object
		var tree1: BinaryTree = new BinaryTree();
		var tree2: BinaryTree = new BinaryTree();
		/*  
				Constructing binary tree
				-----------------------
				         96
				        /  \
				       /    \
				     37     11
				     / \    /  \
				    18  1  5    6
				     \
				      9
				     /  \
				    3    6
				*/
		tree1.root = new Node(96);
		tree1.root.left = new Node(37);
		tree1.root.left.right = new Node(1);
		tree1.root.right = new Node(11);
		tree1.root.right.right = new Node(6);
		tree1.root.right.left = new Node(5);
		tree1.root.left.left = new Node(18);
		tree1.root.left.left.right = new Node(9);
		tree1.root.left.left.right.right = new Node(6);
		tree1.root.left.left.right.left = new Node(3);
		tree1.is_sum_tree();
		/*  
				Constructing binary tree
				-----------------------
				     36
				    /  \
				   /    \
				  2      17
				 / \    /  \
				1   1  5    6
				   
				*/
		tree2.root = new Node(36);
		tree2.root.left = new Node(2);
		tree2.root.left.right = new Node(1);
		tree2.root.right = new Node(17);
		tree2.root.right.right = new Node(6);
		tree2.root.right.left = new Node(5);
		tree2.root.left.left = new Node(1);
		/*
				When subtree sum is not equal to parent node
				----------------------------------------
				  17 => problem here
				 /  \
				5    6

				*/
		tree2.is_sum_tree();
	}
}

Output

 Preorder :  96 37 18 9 3 6 1 11 5 6
 Is Sum Tree

 Preorder :  36 2 1 1 17 5 6
 Is Not Sum Tree
/*
    Swift 4 Program 
    Check if a given Binary Tree is Sumtree
*/

//  Binary Tree node
class Node
{
	var data: Int;
	var left: Node? ;
	var right: Node? ;
	init(_ data: Int)
	{
		//  Set node value
		self.data = data;
		self.left = nil;
		self.right = nil;
	}
}
class Result
{
	var status: Bool;
	init()
	{
		self.status = true;
	}
}
// Define Binary Tree
class BinaryTree
{
	var root: Node? ;
	init()
	{
		// Set root of tree
		self.root = nil;
	}
	// Display pre order elements
	func print_preorder(_ node: Node? )
	{
		if (node != nil)
		{
			// Print node value
			print(" ", node!.data, terminator: "");
			self.print_preorder(node!.left);
			self.print_preorder(node!.right);
		}
	}
	// Handles the request of display the element of tree
	func print_tree(_ root: Node? )
	{
		if (root == nil)
		{
			return;
		}
		//  Display tree elements in three formats
		print("\n Preorder : ", terminator: "");
		self.print_preorder(root);
		print("\n", terminator: "");
	}
	// Determine whether given binary tree is subtree or not
	func check_sum_tree(_ node: Node? , _ output : Result? )->Int
	{
		if (node == nil || output!.status == false)
		{
			return 0;
		}
		else if (node!.left == nil && node!.right == nil)
		{
			return node!.data;
		}
		else
		{
			// recursively calculate sum of left and right subtree
			let a: Int = self.check_sum_tree(node!.left, output);
			let b: Int = self.check_sum_tree(node!.right, output);
			if (output!.status == true)
			{
				if ((a + b) == node!.data)
				{
					return (a + b) * 2;
				}
				else
				{
					//  violation of subtree sum
					output!.status = false;
				}
			}
			return 0;
		}
	}
	//  Handles the request of to find sum tree exist in binary tree
	func is_sum_tree()
	{
		if (self.root == nil)
		{
			return;
		}
		else
		{
			let output: Result? = Result();
			self.print_tree(self.root);
			let _ = self.check_sum_tree(self.root, output);
			if (output!.status == true)
			{
				print(" Is Sum Tree \n", terminator: "");
			}
			else
			{
				print(" Is Not Sum Tree \n", terminator: "");
			}
		}
	}
}
func main()
{
	// Create tree object
	let tree1: BinaryTree = BinaryTree();
	let tree2: BinaryTree = BinaryTree();
	/*  
		Constructing binary tree
		-----------------------
		         96
		        /  \
		       /    \
		     37     11
		     / \    /  \
		    18  1  5    6
		     \
		      9
		     /  \
		    3    6
		*/
	tree1.root = Node(96);
	tree1.root!.left = Node(37);
	tree1.root!.left!.right = Node(1);
	tree1.root!.right = Node(11);
	tree1.root!.right!.right = Node(6);
	tree1.root!.right!.left = Node(5);
	tree1.root!.left!.left = Node(18);
	tree1.root!.left!.left!.right = Node(9);
	tree1.root!.left!.left!.right!.right = Node(6);
	tree1.root!.left!.left!.right!.left = Node(3);
	tree1.is_sum_tree();
	/*  
		Constructing binary tree
		-----------------------
		     36
		    /  \
		   /    \
		  2      17
		 / \    /  \
		1   1  5    6
		   
		*/
	tree2.root = Node(36);
	tree2.root!.left = Node(2);
	tree2.root!.left!.right = Node(1);
	tree2.root!.right = Node(17);
	tree2.root!.right!.right = Node(6);
	tree2.root!.right!.left = Node(5);
	tree2.root!.left!.left = Node(1);
	/*
		When subtree sum is not equal to parent node
		----------------------------------------
		  17 => problem here
		 /  \
		5    6

		*/
	tree2.is_sum_tree();
}
main();

Output

 Preorder :   96  37  18  9  3  6  1  11  5  6
 Is Sum Tree

 Preorder :   36  2  1  1  17  5  6
 Is Not Sum Tree


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