Subtraction of the alternate nodes of linked list

Here given code implementation process.

// C Program
// Subtraction of the alternate nodes of linked list
#include <stdio.h>
 //For malloc function
#include <stdlib.h>

//Linked List Node
struct Node
{
	int data;
	struct Node *next;
};
//Create a node of linked list
struct Node *create_node(int data)
{
	//Create dynamic node
	struct Node *node = (struct Node *) malloc(sizeof(struct Node));
	if (node == NULL)
	{
		printf("Memory overflow\n");
	}
	else
	{
		//Set initial node value
		node->data = data;
		node->next = NULL;
	}
	return node;
}
//Add new node at end of linked list 
void insert(struct Node **head, int data)
{
	struct Node *node = create_node(data);
	if ( *head == NULL)
	{
		*head = node;
	}
	else
	{
		struct Node *temp = *head;
		//Find last node
		while (temp->next != NULL)
		{
			temp = temp->next;
		}
		//Add node at last possition
		temp->next = node;
	}
}
//Display linked list element
void display(struct Node *head)
{
	if (head == NULL)
	{
		printf("\nEmpty linked list\n");
		return;
	}
	struct Node *temp = head;
	printf("\n Linked List : ");
	//iterating linked list elements
	while (temp != NULL)
	{
		printf("  %d", temp->data);
		//visit to next node
		temp = temp->next;
	}
	printf("\n");
}
// Find the subtraction of all alternate nodes in linked list
void alternate_nodes_subtraction(struct Node *head)
{
	if (head == NULL)
	{
		return;
	}
	//Define resultant variables
	int result = 0;
	int counter = 0;
	//Start to first node of linked list
	struct Node *temp = head;
	//iterating linked list elements
	while (temp != NULL)
	{
		if (counter % 2 == 0)
		{
			//When get alternate node
			if (result == 0)
			{
				result = temp->data;
			}
			else
			{
				result = result - temp->data;
			}
		}
		//linked list node counter
		counter++;
		//visit to next node
		temp = temp->next;
	}
	printf(" Alternate nodes subtraction : %d\n", result);
}
int main()
{
	struct Node *head = NULL;
	//Create linked list
	insert( &head, 4);
	insert( &head, 7);
	insert( &head, 2);
	insert( &head, 9);
	insert( &head, 1);
	insert( &head, 3);
	insert( &head, 4);
	insert( &head, 3);
	insert( &head, 6);
	//Display of linked list nodes
	display(head);
	alternate_nodes_subtraction(head);
	return 0;
}

Output

 Linked List :   4  7  2  9  1  3  4  3  6
 Alternate nodes subtraction : -9
// Java Program
// Subtraction of the alternate nodes of linked list

//Node of LinkedList
class Node
{
	public int data;
	public Node next;
	public Node(int data)
	{
		//Set node value
		this.data = data;
		this.next = null;
	}
}
class MyLinkedList
{
	public Node head;
	public Node tail;
	//Class constructors
	public MyLinkedList()
	{
		this.head = null;
		this.tail = null;
	}
	//insert node at last of linke list
	public void insert(int data)
	{
		//Create a node
		Node node = new Node(data);
		if (this.head == null)
		{
			//When linked list empty add first node
			this.head = node;
			this.tail = node;
		}
		else
		{
			//Add new node at end of linked list
			this.tail.next = node;
			this.tail = node;
		}
	}
	//Display linked list element
	public void display()
	{
		if (this.head == null)
		{
			System.out.print("\nEmpty linked list\n");
			return;
		}
		Node temp = this.head;
		System.out.print("\n Linked List : ");
		//iterating linked list elements
		while (temp != null)
		{
			//display node value
			System.out.print("  " + temp.data);
			//visit to next node
			temp = temp.next;
		}
		System.out.print("\n");
	}
	// Find the subtraction of all alternate nodes in linked list
	public void alternate_nodes_subtraction()
	{
		if (head == null)
		{
			return;
		}
		//Define resultant variables
		int result = 0;
		int counter = 0;
		//Start to first node of linked list
		Node temp = head;
		//iterating linked list elements
		while (temp != null)
		{
			if (counter % 2 == 0)
			{
				//When get alternate node
				if (result == 0)
				{
					result = temp.data;
				}
				else
				{
					result = result - temp.data;
				}
			}
			//linked list node counter
			counter++;
			//visit to next node
			temp = temp.next;
		}
		System.out.print(" Alternate nodes subtraction : " + result + "\n");
	}
	public static void main(String[] args)
	{
		MyLinkedList obj = new MyLinkedList();
		//Create linked list
		obj.insert(4);
		obj.insert(7);
		obj.insert(2);
		obj.insert(9);
		obj.insert(1);
		obj.insert(3);
		obj.insert(4);
		obj.insert(3);
		obj.insert(6);
		//Display of linked list nodes
		obj.display();
		obj.alternate_nodes_subtraction();
	}
}

Output

 Linked List :   4  7  2  9  1  3  4  3  6
 Alternate nodes subtraction : -9
//Include header file
#include <iostream>
using namespace std;

// C++ Program
// Subtraction of the alternate nodes of linked list

//Node of LinkedList
class Node
{
	public: int data;
	Node * next;
	Node(int data)
	{
		//Set node value
		this->data = data;
		this->next = NULL;
	}
};
class MyLinkedList
{
	public: Node * head;
	Node * tail;
	//Class constructors
	MyLinkedList()
	{
		this->head = NULL;
		this->tail = NULL;
	}
	//insert node at last of linke list
	void insert(int data)
	{
		//Create a node
		Node * node = new Node(data);
		if (this->head == NULL)
		{
			//When linked list empty add first node
			this->head = node;
			this->tail = node;
		}
		else
		{
			//Add new node at end of linked list
			this->tail->next = node;
			this->tail = node;
		}
	}
	//Display linked list element
	void display()
	{
		if (this->head == NULL)
		{
			cout << "\nEmpty linked list\n";
			return;
		}
		Node * temp = this->head;
		cout << "\n Linked List : ";
		//iterating linked list elements
		while (temp != NULL)
		{
			//display node value
			cout << "  " << temp->data;
			//visit to next node
			temp = temp->next;
		}
		cout << "\n";
	}
	// Find the subtraction of all alternate nodes in linked list
	void alternate_nodes_subtraction()
	{
		if (this->head == NULL)
		{
			return;
		}
		//Define resultant variables
		int result = 0;
		int counter = 0;
		//Start to first node of linked list
		Node * temp = this->head;
		//iterating linked list elements
		while (temp != NULL)
		{
			if (counter % 2 == 0)
			{
				//When get alternate node
				if (result == 0)
				{
					result = temp->data;
				}
				else
				{
					result = result - temp->data;
				}
			}
			//linked list node counter
			counter++;
			//visit to next node
			temp = temp->next;
		}
		cout << " Alternate nodes subtraction : " << result << "\n";
	}
};
int main()
{
	MyLinkedList obj = MyLinkedList();
	//Create linked list
	obj.insert(4);
	obj.insert(7);
	obj.insert(2);
	obj.insert(9);
	obj.insert(1);
	obj.insert(3);
	obj.insert(4);
	obj.insert(3);
	obj.insert(6);
	//Display of linked list nodes
	obj.display();
	obj.alternate_nodes_subtraction();
	return 0;
}

Output

 Linked List :   4  7  2  9  1  3  4  3  6
 Alternate nodes subtraction : -9
//Include namespace system
using System;

// C# Program
// Subtraction of the alternate nodes of linked list

//Node of LinkedList
class Node
{
	public int data;
	public Node next;
	public Node(int data)
	{
		//Set node value
		this.data = data;
		this.next = null;
	}
}
class MyLinkedList
{
	public Node head;
	public Node tail;
	//Class constructors
	public MyLinkedList()
	{
		this.head = null;
		this.tail = null;
	}
	//insert node at last of linke list
	public void insert(int data)
	{
		//Create a node
		Node node = new Node(data);
		if (this.head == null)
		{
			//When linked list empty add first node
			this.head = node;
			this.tail = node;
		}
		else
		{
			//Add new node at end of linked list
			this.tail.next = node;
			this.tail = node;
		}
	}
	//Display linked list element
	public void display()
	{
		if (this.head == null)
		{
			Console.Write("\nEmpty linked list\n");
			return;
		}
		Node temp = this.head;
		Console.Write("\n Linked List : ");
		//iterating linked list elements
		while (temp != null)
		{
			//display node value
			Console.Write("  " + temp.data);
			//visit to next node
			temp = temp.next;
		}
		Console.Write("\n");
	}
	// Find the subtraction of all alternate nodes in linked list
	public void alternate_nodes_subtraction()
	{
		if (head == null)
		{
			return;
		}
		//Define resultant variables
		int result = 0;
		int counter = 0;
		//Start to first node of linked list
		Node temp = head;
		//iterating linked list elements
		while (temp != null)
		{
			if (counter % 2 == 0)
			{
				//When get alternate node
				if (result == 0)
				{
					result = temp.data;
				}
				else
				{
					result = result - temp.data;
				}
			}
			//linked list node counter
			counter++;
			//visit to next node
			temp = temp.next;
		}
		Console.Write(" Alternate nodes subtraction : " + result + "\n");
	}
	public static void Main(String[] args)
	{
		MyLinkedList obj = new MyLinkedList();
		//Create linked list
		obj.insert(4);
		obj.insert(7);
		obj.insert(2);
		obj.insert(9);
		obj.insert(1);
		obj.insert(3);
		obj.insert(4);
		obj.insert(3);
		obj.insert(6);
		//Display of linked list nodes
		obj.display();
		obj.alternate_nodes_subtraction();
	}
}

Output

 Linked List :   4  7  2  9  1  3  4  3  6
 Alternate nodes subtraction : -9
<?php
// Php Program
// Subtraction of the alternate nodes of linked list

//Node of LinkedList
class Node
{
	public $data;
	public $next;

	function __construct($data)
	{
		//Set node value
		$this->data = $data;
		$this->next = null;
	}
}
class MyLinkedList
{
	public $head;
	public $tail;
	//Class constructors
	function __construct()
	{
		$this->head = null;
		$this->tail = null;
	}
	//insert node at last of linke list
	public	function insert($data)
	{
		//Create a node
		$node = new Node($data);
		if ($this->head == null)
		{
			//When linked list empty add first node
			$this->head = $node;
			$this->tail = $node;
		}
		else
		{
			//Add new node at end of linked list
			$this->tail->next = $node;
			$this->tail = $node;
		}
	}
	//Display linked list element
	public	function display()
	{
		if ($this->head == null)
		{
			echo "\nEmpty linked list\n";
			return;
		}
		$temp = $this->head;
		echo "\n Linked List : ";
		//iterating linked list elements
		while ($temp != null)
		{
			//display node value
			echo "  ". $temp->data;
			//visit to next node
			$temp = $temp->next;
		}
		echo "\n";
	}
	// Find the subtraction of all alternate nodes in linked list
	public	function alternate_nodes_subtraction()
	{
		if ($this->head == null)
		{
			return;
		}
		//Define resultant variables
		$result = 0;
		$counter = 0;
		//Start to first node of linked list
		$temp = $this->head;
		//iterating linked list elements
		while ($temp != null)
		{
			if ($counter % 2 == 0)
			{
				//When get alternate node
				if ($result == 0)
				{
					$result = $temp->data;
				}
				else
				{
					$result = $result - $temp->data;
				}
			}
			//linked list node counter
			$counter++;
			//visit to next node
			$temp = $temp->next;
		}
		echo " Alternate nodes subtraction : ". $result ."\n";
	}
}

function main()
{
	$obj = new MyLinkedList();
	//Create linked list
	$obj->insert(4);
	$obj->insert(7);
	$obj->insert(2);
	$obj->insert(9);
	$obj->insert(1);
	$obj->insert(3);
	$obj->insert(4);
	$obj->insert(3);
	$obj->insert(6);
	//Display of linked list nodes
	$obj->display();
	$obj->alternate_nodes_subtraction();
}
main();

Output

 Linked List :   4  7  2  9  1  3  4  3  6
 Alternate nodes subtraction : -9
// Node Js Program
// Subtraction of the alternate nodes of linked list

//Node of LinkedList
class Node
{
	constructor(data)
	{
		//Set node value
		this.data = data;
		this.next = null;
	}
}
class MyLinkedList
{
	//Class constructors
	constructor()
	{
		this.head = null;
		this.tail = null;
	}
	//insert node at last of linke list
	insert(data)
	{
		//Create a node
		var node = new Node(data);
		if (this.head == null)
		{
			//When linked list empty add first node
			this.head = node;
			this.tail = node;
		}
		else
		{
			//Add new node at end of linked list
			this.tail.next = node;
			this.tail = node;
		}
	}
	//Display linked list element
	display()
	{
		if (this.head == null)
		{
			process.stdout.write("\nEmpty linked list\n");
			return;
		}
		var temp = this.head;
		process.stdout.write("\n Linked List : ");
		//iterating linked list elements
		while (temp != null)
		{
			//display node value
			process.stdout.write("  " + temp.data);
			//visit to next node
			temp = temp.next;
		}
		process.stdout.write("\n");
	}
	// Find the subtraction of all alternate nodes in linked list
	alternate_nodes_subtraction()
	{
		if (this.head == null)
		{
			return;
		}
		//Define resultant variables
		var result = 0;
		var counter = 0;
		//Start to first node of linked list
		var temp = this.head;
		//iterating linked list elements
		while (temp != null)
		{
			if (counter % 2 == 0)
			{
				//When get alternate node
				if (result == 0)
				{
					result = temp.data;
				}
				else
				{
					result = result - temp.data;
				}
			}
			//linked list node counter
			counter++;
			//visit to next node
			temp = temp.next;
		}
		process.stdout.write(" Alternate nodes subtraction : " + result + "\n");
	}
}

function main()
{
	var obj = new MyLinkedList();
	//Create linked list
	obj.insert(4);
	obj.insert(7);
	obj.insert(2);
	obj.insert(9);
	obj.insert(1);
	obj.insert(3);
	obj.insert(4);
	obj.insert(3);
	obj.insert(6);
	//Display of linked list nodes
	obj.display();
	obj.alternate_nodes_subtraction();
}
main();

Output

 Linked List :   4  7  2  9  1  3  4  3  6
 Alternate nodes subtraction : -9
#  Python 3 Program
#  Subtraction of the alternate nodes of linked list

# Node of LinkedList
class Node :
	
	def __init__(self, data) :
		# Set node value
		self.data = data
		self.next = None
	

class MyLinkedList :
	
	# Class constructors
	def __init__(self) :
		self.head = None
		self.tail = None
	
	# insert node at last of linke list
	def insert(self, data) :
		# Create a node
		node = Node(data)
		if (self.head == None) :
			# When linked list empty add first node
			self.head = node
			self.tail = node
		else :
			# Add new node at end of linked list
			self.tail.next = node
			self.tail = node
		
	
	# Display linked list element
	def display(self) :
		if (self.head == None) :
			print("\nEmpty linked list\n", end = "")
			return
		
		temp = self.head
		print("\n Linked List : ", end = "")
		# iterating linked list elements
		while (temp != None) :
			# display node value
			print("  ", temp.data, end = "")
			# visit to next node
			temp = temp.next
		
		print("\n", end = "")
	
	#  Find the subtraction of all alternate nodes in linked list
	def alternate_nodes_subtraction(self) :
		if (self.head == None) :
			return
		
		# Define resultant variables
		result = 0
		counter = 0
		# Start to first node of linked list
		temp = self.head
		# iterating linked list elements
		while (temp != None) :
			if (counter % 2 == 0) :
				# When get alternate node
				if (result == 0) :
					result = temp.data
				else :
					result = result - temp.data
				
			
			# linked list node counter
			counter += 1
			# visit to next node
			temp = temp.next
		
		print(" Alternate nodes subtraction : ", result ,"\n", end = "")
	

def main() :
	obj = MyLinkedList()
	# Create linked list
	obj.insert(4)
	obj.insert(7)
	obj.insert(2)
	obj.insert(9)
	obj.insert(1)
	obj.insert(3)
	obj.insert(4)
	obj.insert(3)
	obj.insert(6)
	# Display of linked list nodes
	obj.display()
	obj.alternate_nodes_subtraction()

if __name__ == "__main__": main()

Output

 Linked List :    4   7   2   9   1   3   4   3   6
 Alternate nodes subtraction :  -9
#  Ruby Program
#  Subtraction of the alternate nodes of linked list

# Node of LinkedList
class Node 

	# Define the accessor and reader of class Node  
	attr_reader :data, :next
	attr_accessor :data, :next

	def initialize(data)
	
		# Set node value
		self.data = data
		self.next = nil
	end
end
class MyLinkedList 

	# Define the accessor and reader of class MyLinkedList  
	attr_reader :head, :tail
	attr_accessor :head, :tail

	# Class constructors
	def initialize()
	
		self.head = nil
		self.tail = nil
	end
	# insert node at last of linke list
	def insert(data)
	
		# Create a node
		node = Node.new(data)
		if (self.head == nil)
		
			# When linked list empty add first node
			self.head = node
			self.tail = node
		else
		
			# Add new node at end of linked list
			self.tail.next = node
			self.tail = node
		end
	end
	# Display linked list element
	def display()
	
		if (self.head == nil)
		
			print("\nEmpty linked list\n")
			return
		end
		temp = self.head
		print("\n Linked List : ")
		# iterating linked list elements
		while (temp != nil)
		
			# display node value
			print("  ", temp.data)
			# visit to next node
			temp = temp.next
		end
		print("\n")
	end
	#  Find the subtraction of all alternate nodes in linked list
	def alternate_nodes_subtraction()
	
		if (@head == nil)
		
			return
		end
		# Define resultant variables
		result = 0
		counter = 0
		# Start to first node of linked list
		temp = @head
		# iterating linked list elements
		while (temp != nil)
		
			if (counter % 2 == 0)
			
				# When get alternate node
				if (result == 0)
				
					result = temp.data
				else
				
					result = result - temp.data
				end
			end
			# linked list node counter
			counter += 1
			# visit to next node
			temp = temp.next
		end
		print(" Alternate nodes subtraction : ", result ,"\n")
	end
end
def main()

	obj = MyLinkedList.new()
	# Create linked list
	obj.insert(4)
	obj.insert(7)
	obj.insert(2)
	obj.insert(9)
	obj.insert(1)
	obj.insert(3)
	obj.insert(4)
	obj.insert(3)
	obj.insert(6)
	# Display of linked list nodes
	obj.display()
	obj.alternate_nodes_subtraction()
end
main()

Output

 Linked List :   4  7  2  9  1  3  4  3  6
 Alternate nodes subtraction : -9
// Scala Program
// Subtraction of the alternate nodes of linked list

//Node of LinkedList
class Node(var data: Int,
	var next: Node)
{
	def this(data: Int)
	{
		this(data, null);
	}
}
class MyLinkedList(var head: Node,
	var tail: Node)
{
	//Class constructors
	def this()
	{
		this(null, null);
	}
	//insert node at last of linke list
	def insert(data: Int): Unit = {
		//Create a node
		var node: Node = new Node(data);
		if (this.head == null)
		{
			//When linked list empty add first node
			this.head = node;
			this.tail = node;
		}
		else
		{
			//Add new node at end of linked list
			this.tail.next = node;
			this.tail = node;
		}
	}
	//Display linked list element
	def display(): Unit = {
		if (this.head == null)
		{
			print("\nEmpty linked list\n");
			return;
		}
		var temp: Node = this.head;
		print("\n Linked List : ");
		//iterating linked list elements
		while (temp != null)
		{
			//display node value
			print("  " + temp.data);
			//visit to next node
			temp = temp.next;
		}
		print("\n");
	}
	// Find the subtraction of all alternate nodes in linked list
	def alternate_nodes_subtraction(): Unit = {
		if (head == null)
		{
			return;
		}
		//Define resultant variables
		var result: Int = 0;
		var counter: Int = 0;
		//Start to first node of linked list
		var temp: Node = head;
		//iterating linked list elements
		while (temp != null)
		{
			if (counter % 2 == 0)
			{
				//When get alternate node
				if (result == 0)
				{
					result = temp.data;
				}
				else
				{
					result = result - temp.data;
				}
			}
			//linked list node counter
			counter += 1;
			//visit to next node
			temp = temp.next;
		}
		print(" Alternate nodes subtraction : " + result + "\n");
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		var obj: MyLinkedList = new MyLinkedList();
		//Create linked list
		obj.insert(4);
		obj.insert(7);
		obj.insert(2);
		obj.insert(9);
		obj.insert(1);
		obj.insert(3);
		obj.insert(4);
		obj.insert(3);
		obj.insert(6);
		//Display of linked list nodes
		obj.display();
		obj.alternate_nodes_subtraction();
	}
}

Output

 Linked List :   4  7  2  9  1  3  4  3  6
 Alternate nodes subtraction : -9
// Swift Program
// Subtraction of the alternate nodes of linked list

//Node of LinkedList
class Node
{
	var data: Int;
	var next: Node? ;
	init(_ data: Int)
	{
		//Set node value
		self.data = data;
		self.next = nil;
	}
}
class MyLinkedList
{
	var head: Node? ;
	var tail: Node? ;
	//Class constructors
	init()
	{
		self.head = nil;
		self.tail = nil;
	}
	//insert node at last of linke list
	func insert(_ data: Int)
	{
		//Create a node
		let node: Node? = Node(data);
		if (self.head == nil)
		{
			//When linked list empty add first node
			self.head = node;
			self.tail = node;
		}
		else
		{
			//Add new node at end of linked list
			self.tail!.next = node;
			self.tail = node;
		}
	}
	//Display linked list element
	func display()
	{
		if (self.head == nil)
		{
			print("\nEmpty linked list\n", terminator: "");
			return;
		}
		var temp: Node? = self.head;
		print("\n Linked List : ", terminator: "");
		//iterating linked list elements
		while (temp != nil)
		{
			//display node value
			print("  ", temp!.data, terminator: "");
			//visit to next node
			temp = temp!.next;
		}
		print("\n", terminator: "");
	}
	// Find the subtraction of all alternate nodes in linked list
	func alternate_nodes_subtraction()
	{
		if (self.head == nil)
		{
			return;
		}
		//Define resultant variables
		var result: Int = 0;
		var counter: Int = 0;
		//Start to first node of linked list
		var temp: Node? = self.head;
		//iterating linked list elements
		while (temp != nil)
		{
			if (counter % 2 == 0)
			{
				//When get alternate node
				if (result == 0)
				{
					result = temp!.data;
				}
				else
				{
					result = result - temp!.data;
				}
			}
			//linked list node counter
			counter += 1;
			//visit to next node
			temp = temp!.next;
		}
		print(" Alternate nodes subtraction : ", result ,"\n", terminator: "");
	}
}
func main()
{
	let obj: MyLinkedList = MyLinkedList();
	//Create linked list
	obj.insert(4);
	obj.insert(7);
	obj.insert(2);
	obj.insert(9);
	obj.insert(1);
	obj.insert(3);
	obj.insert(4);
	obj.insert(3);
	obj.insert(6);
	//Display of linked list nodes
	obj.display();
	obj.alternate_nodes_subtraction();
}
main();

Output

 Linked List :    4   7   2   9   1   3   4   3   6
 Alternate nodes subtraction :  -9

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