Find the first Sorted path in binary tree

Here given code implementation process.

import java.util.ArrayList;
/*
    Java Program
    Find the first Sorted path in binary tree
*/
// Binary Tree node
class TreeNode
{
	public int data;
	public TreeNode left;
	public TreeNode right;
	public TreeNode(int data)
	{
		// Set node value
		this.data = data;
		this.left = null;
		this.right = null;
	}
}
public class BinaryTree
{
	public TreeNode root;
	public BinaryTree()
	{
		// Set initial tree root to null
		this.root = null;
	}
	// Display given path
	public void printPath(ArrayList < Integer > path)
	{
		int i = 0;
		// print path
		while (i < path.size())
		{
			System.out.print(" " + path.get(i));
			i++;
		}
	}
	public boolean sortPath(TreeNode node, ArrayList < Integer > path)
	{
		if (node == null)
		{
			return false;
		}
		// Add path element
		path.add(node.data);
		if (node.left == null && node.right == null)
		{
			// When the node is a leaf node then stop the process
			// Because we have get the resulting path
			return true;
		}
		if (node.left != null && node.left.data >= node.data 
            && (sortPath(node.left, path)))
		{
			return true;
		}
		if (node.right != null && node.right.data >= node.data 
            && sortPath(node.right, path))
		{
			return true;
		}
		// Remove last path node
		path.remove(path.size() - 1);
		return false;
	}
	// Handles the request to find first sorted path in binary tree
	public void firstSortedPath()
	{
		// This is use to collect sort path
		ArrayList < Integer > path = new ArrayList < Integer > ();
		if (this.root == null)
		{
			// Empty Tree
			return;
		}
		else
		{
			// Collecting first sorted path when exists
			sortPath(this.root, path);
		}
		if (path.size() == 0)
		{
			// When there is no sort path in binary tree
			System.out.print("None");
		}
		else
		{
			printPath(path);
		}
	}
	public static void main(String[] args)
	{
		// Create new binary tree
		BinaryTree tree = new BinaryTree();
		/*
		         4                            
		       /   \    
		      4     7    
		     / \     \               
		    2   5     12
		       / \    / 
		      10  8  5
		      /       \
		     9         15 
			-----------------
			Constructing binary tree        
		*/
		tree.root = new TreeNode(4);
		tree.root.left = new TreeNode(4);
		tree.root.left.right = new TreeNode(5);
		tree.root.left.right.left = new TreeNode(10);
		tree.root.left.right.left.left = new TreeNode(9);
		tree.root.left.right.right = new TreeNode(8);
		tree.root.left.left = new TreeNode(2);
		tree.root.right = new TreeNode(7);
		tree.root.right.right = new TreeNode(12);
		tree.root.right.right.left = new TreeNode(5);
		tree.root.right.right.left.right = new TreeNode(15);
		// Test case
		tree.firstSortedPath();
	}
}

input

 4 4 5 8
// Include header file
#include <iostream>
#include <vector>
using namespace std;
/*
    C++ Program
    Find the first Sorted path in binary tree
*/
// Binary Tree node
class TreeNode
{
	public: 
    int data;
	TreeNode *left;
	TreeNode *right;
	TreeNode(int data)
	{
		// Set node value
		this->data = data;
		this->left = NULL;
		this->right = NULL;
	}
};
class BinaryTree
{
	public: TreeNode *root;
	BinaryTree()
	{
		this->root = NULL;
	}
	// Display given path
	void printPath(vector < int > path)
	{
		int i = 0;
		// print path
		while (i < path.size())
		{
			cout << " " << path.at(i);
			i++;
		}
	}
	bool sortPath(TreeNode *node, vector < int > &path)
	{
		if (node == NULL)
		{
			return false;
		}
		// Add path element
		path.push_back(node->data);
		if (node->left == NULL && node->right == NULL)
		{
			// When the node is a leaf node then stop the process
			// Because we have get the resulting path
			return true;
		}
		if (node->left != NULL && node->left->data >= node->data 
            && (this->sortPath(node->left, path)))
		{
			return true;
		}
		if (node->right != NULL && node->right->data >= node->data 
            && this->sortPath(node->right, path))
		{
			return true;
		}
		// Remove last path node
		path.pop_back();
		return false;
	}
	// Handles the request to find first sorted path in binary tree
	void firstSortedPath()
	{
		// This is use to collect sort path
		vector < int > path;
		if (this->root == NULL)
		{
			// Empty Tree
			return;
		}
		else
		{
			// Collecting first sorted path when exists
			this->sortPath(this->root, path);
		}
		if (path.size() == 0)
		{
			// When there is no sort path in binary tree
			cout << "None";
		}
		else
		{
			this->printPath(path);
		}
	}
};
int main()
{
	// Create new binary tree
	BinaryTree *tree = new BinaryTree();
	/*
	         4                            
	       /   \    
	      4     7    
	     / \     \               
	    2   5     12
	       / \    / 
	      10  8  5
	      /       \
	     9         15 
		-----------------
		Constructing binary tree        
	*/
	tree->root = new TreeNode(4);
	tree->root->left = new TreeNode(4);
	tree->root->left->right = new TreeNode(5);
	tree->root->left->right->left = new TreeNode(10);
	tree->root->left->right->left->left = new TreeNode(9);
	tree->root->left->right->right = new TreeNode(8);
	tree->root->left->left = new TreeNode(2);
	tree->root->right = new TreeNode(7);
	tree->root->right->right = new TreeNode(12);
	tree->root->right->right->left = new TreeNode(5);
	tree->root->right->right->left->right = new TreeNode(15);
	// Test case
	tree->firstSortedPath();
	return 0;
}

input

 4 4 5 8
// Include namespace system
using System;
using System.Collections.Generic;
/*
    Csharp Program
    Find the first Sorted path in binary tree
*/
// Binary Tree node
public class TreeNode
{
	public int data;
	public TreeNode left;
	public TreeNode right;
	public TreeNode(int data)
	{
		// Set node value
		this.data = data;
		this.left = null;
		this.right = null;
	}
}
public class BinaryTree
{
	public TreeNode root;
	public BinaryTree()
	{
		// Set initial tree root to null
		this.root = null;
	}
	// Display given path
	public void printPath(List < int > path)
	{
		int i = 0;
		// print path
		while (i < path.Count)
		{
			Console.Write(" " + path[i]);
			i++;
		}
	}
	public Boolean sortPath(TreeNode node, List < int > path)
	{
		if (node == null)
		{
			return false;
		}
		// Add path element
		path.Add(node.data);
		if (node.left == null && node.right == null)
		{
			// When the node is a leaf node then stop the process
			// Because we have get the resulting path
			return true;
		}
		if (node.left != null && node.left.data >= node.data 
            && (this.sortPath(node.left, path)))
		{
			return true;
		}
		if (node.right != null && node.right.data >= node.data 
            && this.sortPath(node.right, path))
		{
			return true;
		}
		// Remove last path node
		path.RemoveAt(path.Count - 1);
		return false;
	}
	// Handles the request to find first sorted path in binary tree
	public void firstSortedPath()
	{
		// This is use to collect sort path
		List < int > path = new List < int > ();
		if (this.root == null)
		{
			// Empty Tree
			return;
		}
		else
		{
			// Collecting first sorted path when exists
			this.sortPath(this.root, path);
		}
		if (path.Count == 0)
		{
			// When there is no sort path in binary tree
			Console.Write("None");
		}
		else
		{
			this.printPath(path);
		}
	}
	public static void Main(String[] args)
	{
		// Create new binary tree
		BinaryTree tree = new BinaryTree();
		/*
		         4                            
		       /   \    
		      4     7    
		     / \     \               
		    2   5     12
		       / \    / 
		      10  8  5
		      /       \
		     9         15 
			-----------------
			Constructing binary tree        
		*/
		tree.root = new TreeNode(4);
		tree.root.left = new TreeNode(4);
		tree.root.left.right = new TreeNode(5);
		tree.root.left.right.left = new TreeNode(10);
		tree.root.left.right.left.left = new TreeNode(9);
		tree.root.left.right.right = new TreeNode(8);
		tree.root.left.left = new TreeNode(2);
		tree.root.right = new TreeNode(7);
		tree.root.right.right = new TreeNode(12);
		tree.root.right.right.left = new TreeNode(5);
		tree.root.right.right.left.right = new TreeNode(15);
		// Test case
		tree.firstSortedPath();
	}
}

input

 4 4 5 8
<?php
/*
    Php Program
    Find the first Sorted path in binary tree
*/
// Binary Tree node
class TreeNode
{
	public $data;
	public $left;
	public $right;
	public	function __construct($data)
	{
		// Set node value
		$this->data = $data;
		$this->left = NULL;
		$this->right = NULL;
	}
}
class BinaryTree
{
	public $root;
	public	function __construct()
	{
		$this->root = NULL;
	}
	// Display given path
	public	function printPath($path)
	{
		$i = 0;
		// print path
		while ($i < count($path))
		{
			echo(" ".$path[$i]);
			$i++;
		}
	}
	public	function sortPath($node, &$path)
	{
		if ($node == NULL)
		{
			return false;
		}
		// Add path element
		$path[] = $node->data;
		if ($node->left == NULL && $node->right == NULL)
		{
			// When the node is a leaf node then stop the process
			// Because we have get the resulting path
			return true;
		}
		if ($node->left != NULL && $node->left->data >= $node->data 
            && ($this->sortPath($node->left, $path)))
		{
			return true;
		}
		if ($node->right != NULL && $node->right->data >= $node->data 
            && $this->sortPath($node->right, $path))
		{
			return true;
		}
		// Remove last path node
		array_pop($path);
		return false;
	}
	// Handles the request to find first sorted path in binary tree
	public	function firstSortedPath()
	{
		// This is use to collect sort path
		$path = array();
		if ($this->root == NULL)
		{
			// Empty Tree
			return;
		}
		else
		{
			// Collecting first sorted path when exists
			$this->sortPath($this->root, $path);
		}
		if (count($path) == 0)
		{
			// When there is no sort path in binary tree
			echo("None");
		}
		else
		{
			$this->printPath($path);
		}
	}
}

function main()
{
	// Create new binary tree
	$tree = new BinaryTree();
	/*
	         4                            
	       /   \    
	      4     7    
	     / \     \               
	    2   5     12
	       / \    / 
	      10  8  5
	      /       \
	     9         15 
		-----------------
		Constructing binary tree        
	*/
	$tree->root = new TreeNode(4);
	$tree->root->left = new TreeNode(4);
	$tree->root->left->right = new TreeNode(5);
	$tree->root->left->right->left = new TreeNode(10);
	$tree->root->left->right->left->left = new TreeNode(9);
	$tree->root->left->right->right = new TreeNode(8);
	$tree->root->left->left = new TreeNode(2);
	$tree->root->right = new TreeNode(7);
	$tree->root->right->right = new TreeNode(12);
	$tree->root->right->right->left = new TreeNode(5);
	$tree->root->right->right->left->right = new TreeNode(15);
	// Test case
	$tree->firstSortedPath();
}
main();

input

 4 4 5 8
/*
    Node JS Program
    Find the first Sorted path in binary tree
*/
// Binary Tree node
class TreeNode
{
	constructor(data)
	{
		// Set node value
		this.data = data;
		this.left = null;
		this.right = null;
	}
}
class BinaryTree
{
	constructor()
	{
		this.root = null;
	}
	// Display given path
	printPath(path)
	{
		var i = 0;
		// print path
		while (i < path.length)
		{
			process.stdout.write(" " + path[i]);
			i++;
		}
	}
	sortPath(node, path)
	{
		if (node == null)
		{
			return false;
		}
		// Add path element
		path.push(node.data);
		if (node.left == null && node.right == null)
		{
			// When the node is a leaf node then stop the process
			// Because we have get the resulting path
			return true;
		}
		if (node.left != null && node.left.data >= node.data 
            && (this.sortPath(node.left, path)))
		{
			return true;
		}
		if (node.right != null && node.right.data >= node.data 
            && this.sortPath(node.right, path))
		{
			return true;
		}
		// Remove last path node
		path.pop();
		return false;
	}
	// Handles the request to find first sorted path in binary tree
	firstSortedPath()
	{
		// This is use to collect sort path
		var path = [];
		if (this.root == null)
		{
			// Empty Tree
			return;
		}
		else
		{
			// Collecting first sorted path when exists
			this.sortPath(this.root, path);
		}
		if (path.length == 0)
		{
			// When there is no sort path in binary tree
			process.stdout.write("None");
		}
		else
		{
			this.printPath(path);
		}
	}
}

function main()
{
	// Create new binary tree
	var tree = new BinaryTree();
	/*
	         4                            
	       /   \    
	      4     7    
	     / \     \               
	    2   5     12
	       / \    / 
	      10  8  5
	      /       \
	     9         15 
		-----------------
		Constructing binary tree        
	*/
	tree.root = new TreeNode(4);
	tree.root.left = new TreeNode(4);
	tree.root.left.right = new TreeNode(5);
	tree.root.left.right.left = new TreeNode(10);
	tree.root.left.right.left.left = new TreeNode(9);
	tree.root.left.right.right = new TreeNode(8);
	tree.root.left.left = new TreeNode(2);
	tree.root.right = new TreeNode(7);
	tree.root.right.right = new TreeNode(12);
	tree.root.right.right.left = new TreeNode(5);
	tree.root.right.right.left.right = new TreeNode(15);
	// Test case
	tree.firstSortedPath();
}
main();

input

 4 4 5 8
#    Python 3 Program
#    Find the first Sorted path in binary tree

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

class BinaryTree :
	def __init__(self) :
		self.root = None
	
	#  Display given path
	def printPath(self, path) :
		i = 0
		#  print path
		while (i < len(path)) :
			print(" ", path[i], end = "")
			i += 1
		
	
	def sortPath(self, node, path) :
		if (node == None) :
			return False
		
		#  Add path element
		path.append(node.data)
		if (node.left == None and node.right == None) :
			#  When the node is a leaf node then stop the process
			#  Because we have get the resulting path
			return True
		
		if (node.left != None and node.left.data >= node.data and 
            (self.sortPath(node.left, path))) :
			return True
		
		if (node.right != None and node.right.data >= node.data and 
            self.sortPath(node.right, path)) :
			return True
		
		#  Remove last path node
		del path[len(path) - 1]
		return False
	
	#  Handles the request to find first sorted path in binary tree
	def firstSortedPath(self) :
		#  This is use to collect sort path
		path = []
		if (self.root == None) :
			#  Empty Tree
			return
		else :
			#  Collecting first sorted path when exists
			self.sortPath(self.root, path)
		
		if (len(path) == 0) :
			#  When there is no sort path in binary tree
			print("None", end = "")
		else :
			self.printPath(path)
		
	

def main() :
	#  Create new binary tree
	tree = BinaryTree()
	#         4                            
	#       /   \    
	#      4     7    
	#     / \     \               
	#    2   5     12
	#       / \    / 
	#      10  8  5
	#      /       \
	#     9         15 
	# 	-----------------
	# 	Constructing binary tree        
	tree.root = TreeNode(4)
	tree.root.left = TreeNode(4)
	tree.root.left.right = TreeNode(5)
	tree.root.left.right.left = TreeNode(10)
	tree.root.left.right.left.left = TreeNode(9)
	tree.root.left.right.right = TreeNode(8)
	tree.root.left.left = TreeNode(2)
	tree.root.right = TreeNode(7)
	tree.root.right.right = TreeNode(12)
	tree.root.right.right.left = TreeNode(5)
	tree.root.right.right.left.right = TreeNode(15)
	#  Test case
	tree.firstSortedPath()

if __name__ == "__main__": main()

input

  4  4  5  8
#    Ruby Program
#    Find the first Sorted path in binary tree

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

	#  Display given path
	def printPath(path) 
		i = 0
		#  print path
		while (i < path.length) 
			print(" ", path[i])
			i += 1
		end

	end

	def sortPath(node, path) 
		if (node == nil) 
			return false
		end

		#  Add path element
		path.push(node.data)
		if (node.left == nil && node.right == nil) 
			#  When the node is a leaf node then stop the process
			#  Because we have get the resulting path
			return true
		end

		if (node.left != nil && node.left.data >= node.data && (self.sortPath(node.left, path))) 
			return true
		end

		if (node.right != nil && node.right.data >= node.data && self.sortPath(node.right, path)) 
			return true
		end

		#  Remove last path node
		path.delete_at(path.length - 1)
		return false
	end

	#  Handles the request to find first sorted path in binary tree
	def firstSortedPath() 
		#  This is use to collect sort path
		path = []
		if (self.root == nil) 
			#  Empty Tree
			return
 		else 
			#  Collecting first sorted path when exists
			self.sortPath(self.root, path)
		end

		if (path.length == 0) 
			#  When there is no sort path in binary tree
			print("None")
 		else 
			self.printPath(path)
		end

	end

end

def main() 
	#  Create new binary tree
	tree = BinaryTree.new()
	#         4                            
	#       /   \    
	#      4     7    
	#     / \     \               
	#    2   5     12
	#       / \    / 
	#      10  8  5
	#      /       \
	#     9         15 
	# 	-----------------
	# 	Constructing binary tree        
	tree.root = TreeNode.new(4)
	tree.root.left = TreeNode.new(4)
	tree.root.left.right = TreeNode.new(5)
	tree.root.left.right.left = TreeNode.new(10)
	tree.root.left.right.left.left = TreeNode.new(9)
	tree.root.left.right.right = TreeNode.new(8)
	tree.root.left.left = TreeNode.new(2)
	tree.root.right = TreeNode.new(7)
	tree.root.right.right = TreeNode.new(12)
	tree.root.right.right.left = TreeNode.new(5)
	tree.root.right.right.left.right = TreeNode.new(15)
	#  Test case
	tree.firstSortedPath()
end

main()

input

 4 4 5 8
import scala.collection.mutable._;
/*
    Scala Program
    Find the first Sorted path in binary tree
*/
// Binary Tree node
class TreeNode(var data: Int,
	var left: TreeNode,
		var right: TreeNode)
{
	def this(data: Int)
	{
		// Set node value
		this(data, null, null);
	}
}
class BinaryTree(var root: TreeNode)
{
	def this()
	{
		this(null);
	}
	// Display given path
	def printPath(path: ArrayBuffer[Int]): Unit = {
		var i: Int = 0;
		// print path
		while (i < path.size)
		{
			print(" " + path(i));
			i += 1;
		}
	}
	def sortPath(node: TreeNode, path: ArrayBuffer[Int]): Boolean = {
		if (node == null)
		{
			return false;
		}
		// Add path element
		path += node.data;
		if (node.left == null && node.right == null)
		{
			// When the node is a leaf node then stop the process
			// Because we have get the resulting path
			return true;
		}
		if (node.left != null && node.left.data >= node.data 
            && (sortPath(node.left, path)))
		{
			return true;
		}
		if (node.right != null && node.right.data >= node.data 
            && sortPath(node.right, path))
		{
			return true;
		}
		// Remove last path node
		path.remove(path.size - 1);
		return false;
	}
	// Handles the request to find first sorted path in binary tree
	def firstSortedPath(): Unit = {
		// This is use to collect sort path
		var path: ArrayBuffer[Int] = new ArrayBuffer[Int]();
		if (this.root == null)
		{
			// Empty Tree
			return;
		}
		else
		{
			// Collecting first sorted path when exists
			sortPath(this.root, path);
		}
		if (path.size == 0)
		{
			// When there is no sort path in binary tree
			print("None");
		}
		else
		{
			printPath(path);
		}
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		// Create new binary tree
		var tree: BinaryTree = new BinaryTree();
		/*
		         4                            
		       /   \    
		      4     7    
		     / \     \               
		    2   5     12
		       / \    / 
		      10  8  5
		      /       \
		     9         15 
			-----------------
			Constructing binary tree        
		*/
		tree.root = new TreeNode(4);
		tree.root.left = new TreeNode(4);
		tree.root.left.right = new TreeNode(5);
		tree.root.left.right.left = new TreeNode(10);
		tree.root.left.right.left.left = new TreeNode(9);
		tree.root.left.right.right = new TreeNode(8);
		tree.root.left.left = new TreeNode(2);
		tree.root.right = new TreeNode(7);
		tree.root.right.right = new TreeNode(12);
		tree.root.right.right.left = new TreeNode(5);
		tree.root.right.right.left.right = new TreeNode(15);
		// Test case
		tree.firstSortedPath();
	}
}

input

 4 4 5 8
import Foundation;
/*
    Swift 4 Program
    Find the first Sorted path in binary tree
*/
// Binary Tree node
class TreeNode
{
	var data: Int;
	var left: TreeNode? ;
	var right: TreeNode? ;
	init(_ data: Int)
	{
		// Set node value
		self.data = data;
		self.left = nil;
		self.right = nil;
	}
}
class BinaryTree
{
	var root: TreeNode? ;
	init()
	{
		self.root = nil;
	}
	// Display given path
	func printPath(_ path: [Int])
	{
		var i = 0;
		// print path
		while (i < path.count)
		{
			print(" ", path[i], terminator: "");
			i += 1;
		}
	}
	func sortPath(_ node: TreeNode? , _ path : inout[Int]) -> Bool
	{
		if (node == nil)
		{
			return false;
		}
		// Add path element
		path.append(node!.data);
		if (node!.left == nil && node!.right == nil)
		{
			// When the node is a leaf node then stop the process
			// Because we have get the resulting path
			return true;
		}
		if (node!.left  != nil && node!.left!.data >= node!.data 
            && (self.sortPath(node!.left, &path)))
		{
			return true;
		}
		if (node!.right  != nil && node!.right!.data >= node!.data 
            && self.sortPath(node!.right, &path))
		{
			return true;
		}
		// Remove last path node
		path.removeLast();
		return false;
	}
	// Handles the request to find first sorted path in binary tree
	func firstSortedPath()
	{
		// This is use to collect sort path
		var path = [Int]();
		if (self.root == nil)
		{
			// Empty Tree
			return;
		}
		else
		{
			// Collecting first sorted path when exists
			let _ = self.sortPath(self.root, &path);
		}
		if (path.count == 0)
		{
			// When there is no sort path in binary tree
			print("None", terminator: "");
		}
		else
		{
			self.printPath(path);
		}
	}
}
func main()
{
	// Create new binary tree
	let tree = BinaryTree();
	/*
	         4                            
	       /   \    
	      4     7    
	     / \     \               
	    2   5     12
	       / \    / 
	      10  8  5
	      /       \
	     9         15 
		-----------------
		Constructing binary tree        
	*/
	tree.root = TreeNode(4);
	tree.root!.left = TreeNode(4);
	tree.root!.left!.right = TreeNode(5);
	tree.root!.left!.right!.left = TreeNode(10);
	tree.root!.left!.right!.left!.left = TreeNode(9);
	tree.root!.left!.right!.right = TreeNode(8);
	tree.root!.left!.left = TreeNode(2);
	tree.root!.right = TreeNode(7);
	tree.root!.right!.right = TreeNode(12);
	tree.root!.right!.right!.left = TreeNode(5);
	tree.root!.right!.right!.left!.right = TreeNode(15);
	// Test case
	tree.firstSortedPath();
}
main();

input

  4  4  5  8
/*
    Kotlin Program
    Find the first Sorted path in binary tree
*/
// Binary Tree node
class TreeNode
{
	var data: Int;
	var left: TreeNode ? ;
	var right: TreeNode ? ;
	constructor(data: Int)
	{
		// Set node value
		this.data = data;
		this.left = null;
		this.right = null;
	}
}
class BinaryTree
{
	var root: TreeNode ? ;
	constructor()
	{
		this.root = null;
	}
	// Display given path
	fun printPath(path:  MutableList<Int> ): Unit
	{
		var i: Int = 0;
		// print path
		while (i < path.size)
		{
			print(" " + path[i]);
			i += 1;
		}
	}
	fun sortPath(node: TreeNode ? , path :  MutableList<Int>  ): Boolean
	{
		if (node == null)
		{
			return false;
		}
		// Add path element
		path.add(node.data);
		if (node.left == null && node.right == null)
		{
			// When the node is a leaf node then stop the process
			// Because we have get the resulting path
			return true;
		}
		if (node.left != null && node.left!!.data >= node.data 
            && (this.sortPath(node.left, path)))
		{
			return true;
		}
		if (node.right != null && node.right!!.data >= node.data 
            && this.sortPath(node.right, path))
		{
			return true;
		}
		// Remove last path node
		path.removeAt(path.size - 1);
		return false;
	}
	// Handles the request to find first sorted path in binary tree
	fun firstSortedPath(): Unit
	{
		// This is use to collect sort path
		var path = mutableListOf<Int>();
		if (this.root == null)
		{
			// Empty Tree
			return;
		}
		else
		{
			// Collecting first sorted path when exists
			this.sortPath(this.root, path);
		}
		if (path.size == 0)
		{
			// When there is no sort path in binary tree
			print("None");
		}
		else
		{
			this.printPath(path);
		}
	}
}
fun main(args: Array < String > ): Unit
{
	// Create new binary tree
	val tree: BinaryTree = BinaryTree();
	/*
	         4                            
	       /   \    
	      4     7    
	     / \     \               
	    2   5     12
	       / \    / 
	      10  8  5
	      /       \
	     9         15 
		-----------------
		Constructing binary tree        
	*/
	tree.root = TreeNode(4);
	tree.root?.left = TreeNode(4);
	tree.root?.left?.right = TreeNode(5);
	tree.root?.left?.right?.left = TreeNode(10);
	tree.root?.left?.right?.left?.left = TreeNode(9);
	tree.root?.left?.right?.right = TreeNode(8);
	tree.root?.left?.left = TreeNode(2);
	tree.root?.right = TreeNode(7);
	tree.root?.right?.right = TreeNode(12);
	tree.root?.right?.right?.left = TreeNode(5);
	tree.root?.right?.right?.left?.right = TreeNode(15);
	// Test case
	tree.firstSortedPath();
}

input

 4 4 5 8


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