Remove all the Even digit sum nodes from a circular linked list

Here given code implementation process.

// Java Program 
// Remove all the Even digit sum nodes from a circular linked list
class LinkNode
{
	public int data;
	public LinkNode next;
	public LinkNode(int data)
	{
		this.data = data;
		this.next = null;
	}
}
public class CircularLinkedList
{
	public LinkNode head;
	public LinkNode tail;
	public CircularLinkedList()
	{
		// Set initial value
		this.head = null;
		this.tail = null;
	}
	public void insert(int value)
	{
		LinkNode node = new LinkNode(value);
		if (this.head == null)
		{
			this.head = node;
		}
		else
		{
			this.tail.next = node;
		}
		node.next = this.head;
		this.tail = node;
	}
	// Display node element of circular linked list
	public void display()
	{
		if (this.head == null)
		{
			System.out.println("\n Empty Linked List");
		}
		else
		{
			// First node of linked list
			System.out.print("  " + this.head.data);
			LinkNode temp = this.head.next;
			// Display linked list node
			while (temp != null && temp != this.head)
			{
				// Display node value
				System.out.print("  " + temp.data);
				// visit to next node
				temp = temp.next;
			}
		}
	}
	public int digitSum(int num)
	{
		int n = num;
		int sum = 0;
		if (n < 0)
		{
			n = -n;
		}
		while (n > 0)
		{
			sum += (n % 10);
			n = n / 10;
		}
		return sum;
	}
	public void removeEvenDigitSumNode()
	{
		if (this.head == null)
		{
			return;
		}
		LinkNode temp = this.head;
		LinkNode auxiliary = this.head;
		LinkNode point = null;
		while (temp != null)
		{
			if ((digitSum(temp.data) & 1) == 0)
			{
				auxiliary = temp;
				temp = temp.next;
				if (auxiliary == this.head)
				{
					// Remove head node
					if (auxiliary == this.tail)
					{
						// When Remove last node
						this.tail = null;
						this.head = null;
						temp = null;
						point = null;
					}
					else
					{
						this.head = temp;
						this.tail.next = temp;
					}
				}
				else if (auxiliary == this.tail)
				{
					// When Remove last node
					if (point != null)
					{
						point.next = this.head;
					}
					this.tail = point;
				}
				else
				{
					// When removing intermediate node
					if (point != null)
					{
						point.next = temp;
					}
				}
				auxiliary = null;
			}
			else
			{
				point = temp;
				// visit to next node
				temp = temp.next;
				if (temp == this.head)
				{
					// Stop the process
					temp = null;
				}
			}
		}
	}
	public static void main(String[] args)
	{
		CircularLinkedList cll = new CircularLinkedList();
		// Insert node
		cll.insert(13);
		cll.insert(12);
		cll.insert(32);
		cll.insert(1);
		cll.insert(14);
		cll.insert(91);
		cll.insert(27);
		cll.insert(124);
		cll.insert(88);
		System.out.println("\n Before remove even digit sum nodes");
		cll.display();
		/*          

		    Node   Digit Sum    Even
		    ----- --------    --------
		    13    [1+3] 4       Yes
		    12    [1+2] 3       No
		    32    [3+2] 5       No
		    1     [1]   1       No
		    14    [1+4] 5       No
		    91    [9+1] 10      Yes
		    27    [2+7] 9       No        
		    124   [1+2+4] 7     No
		    88    [8+8] 16      Yes
		    --------------------------
		    Result 
		    ------
		    12 → 32 → 1 → 14 → 27 → 124 ┐ 
		     └-------------------------⤶
		*/
		cll.removeEvenDigitSumNode();
		System.out.println("\n After remove even digit sum nodes");
		cll.display();
	}
}

Output

 Before remove even digit sum nodes
  13  12  32  1  14  91  27  124  88
 After remove even digit sum nodes
  12  32  1  14  27  124
// Include header file
#include <iostream>
using namespace std;
// C++ Program
// Remove all the Even digit sum nodes from a circular linked list
class LinkNode
{
	public: int data;
	LinkNode *next;
	LinkNode(int data)
	{
		this->data = data;
		this->next = NULL;
	}
};
class CircularLinkedList
{
	public: LinkNode *head;
	LinkNode *tail;
	CircularLinkedList()
	{
		this->head = NULL;
		this->tail = NULL;
	}
	void insert(int value)
	{
		LinkNode *node = new LinkNode(value);
		if (this->head == NULL)
		{
			this->head = node;
		}
		else
		{
			this->tail->next = node;
		}
		node->next = this->head;
		this->tail = node;
	}
	// Display node element of circular linked list
	void display()
	{
		if (this->head == NULL)
		{
			cout << "\n Empty Linked List" << endl;
		}
		else
		{
			// First node of linked list
			cout << "  " << this->head->data;
			LinkNode *temp = this->head->next;
			// Display linked list node
			while (temp != NULL && temp != this->head)
			{
				// Display node value
				cout << "  " << temp->data;
				// visit to next node
				temp = temp->next;
			}
		}
	}
	int digitSum(int num)
	{
		int n = num;
		int sum = 0;
		if (n < 0)
		{
			n = -n;
		}
		while (n > 0)
		{
			sum += (n % 10);
			n = n / 10;
		}
		return sum;
	}
	void removeEvenDigitSumNode()
	{
		if (this->head == NULL)
		{
			return;
		}
		LinkNode *temp = this->head;
		LinkNode *auxiliary = this->head;
		LinkNode *point = NULL;
		while (temp != NULL)
		{
			if ((this->digitSum(temp->data) &1) == 0)
			{
				auxiliary = temp;
				temp = temp->next;
				if (auxiliary == this->head)
				{
					// Remove head node
					if (auxiliary == this->tail)
					{
						// When Remove last node
						this->tail = NULL;
						this->head = NULL;
						temp = NULL;
						point = NULL;
					}
					else
					{
						this->head = temp;
						this->tail->next = temp;
					}
				}
				else if (auxiliary == this->tail)
				{
					// When Remove last node
					if (point != NULL)
					{
						point->next = this->head;
					}
					this->tail = point;
				}
				else
				{
					// When removing intermediate node
					if (point != NULL)
					{
						point->next = temp;
					}
				}
              	delete auxiliary;
				auxiliary = NULL;
			}
			else
			{
				point = temp;
				// visit to next node
				temp = temp->next;
				if (temp == this->head)
				{
					// Stop the process
					temp = NULL;
				}
			}
		}
	}
};
int main()
{
	CircularLinkedList *cll = new CircularLinkedList();
	// Insert node
	cll->insert(13);
	cll->insert(12);
	cll->insert(32);
	cll->insert(1);
	cll->insert(14);
	cll->insert(91);
	cll->insert(27);
	cll->insert(124);
	cll->insert(88);
	cout << "\n Before remove even digit sum nodes" << endl;
	cll->display();
	/*
	    Node   Digit Sum    Even
	    ----- --------    --------
	    13    [1+3] 4       Yes
	    12    [1+2] 3       No
	    32    [3+2] 5       No
	    1     [1]   1       No
	    14    [1+4] 5       No
	    91    [9+1] 10      Yes
	    27    [2+7] 9       No        
	    124   [1+2+4] 7     No
	    88    [8+8] 16      Yes
	    --------------------------
	    Result 
	    ------
	    12 → 32 → 1 → 14 → 27 → 124 ┐ 
	     └-------------------------⤶
	*/
	cll->removeEvenDigitSumNode();
	cout << "\n After remove even digit sum nodes" << endl;
	cll->display();
	return 0;
}

Output

 Before remove even digit sum nodes
  13  12  32  1  14  91  27  124  88
 After remove even digit sum nodes
  12  32  1  14  27  124
// Include namespace system
using System;
// Csharp Program
// Remove all the Even digit sum nodes from a circular linked list
public class LinkNode
{
	public int data;
	public LinkNode next;
	public LinkNode(int data)
	{
		this.data = data;
		this.next = null;
	}
}
public class CircularLinkedList
{
	public LinkNode head;
	public LinkNode tail;
	public CircularLinkedList()
	{
		// Set initial value
		this.head = null;
		this.tail = null;
	}
	public void insert(int value)
	{
		LinkNode node = new LinkNode(value);
		if (this.head == null)
		{
			this.head = node;
		}
		else
		{
			this.tail.next = node;
		}
		node.next = this.head;
		this.tail = node;
	}
	// Display node element of circular linked list
	public void display()
	{
		if (this.head == null)
		{
			Console.WriteLine("\n Empty Linked List");
		}
		else
		{
			// First node of linked list
			Console.Write("  " + this.head.data);
			LinkNode temp = this.head.next;
			// Display linked list node
			while (temp != null && temp != this.head)
			{
				// Display node value
				Console.Write("  " + temp.data);
				// visit to next node
				temp = temp.next;
			}
		}
	}
	public int digitSum(int num)
	{
		int n = num;
		int sum = 0;
		if (n < 0)
		{
			n = -n;
		}
		while (n > 0)
		{
			sum += (n % 10);
			n = n / 10;
		}
		return sum;
	}
	public void removeEvenDigitSumNode()
	{
		if (this.head == null)
		{
			return;
		}
		LinkNode temp = this.head;
		LinkNode auxiliary = this.head;
		LinkNode point = null;
		while (temp != null)
		{
			if ((this.digitSum(temp.data) & 1) == 0)
			{
				auxiliary = temp;
				temp = temp.next;
				if (auxiliary == this.head)
				{
					// Remove head node
					if (auxiliary == this.tail)
					{
						// When Remove last node
						this.tail = null;
						this.head = null;
						temp = null;
						point = null;
					}
					else
					{
						this.head = temp;
						this.tail.next = temp;
					}
				}
				else if (auxiliary == this.tail)
				{
					// When Remove last node
					if (point != null)
					{
						point.next = this.head;
					}
					this.tail = point;
				}
				else
				{
					// When removing intermediate node
					if (point != null)
					{
						point.next = temp;
					}
				}
				auxiliary = null;
			}
			else
			{
				point = temp;
				// visit to next node
				temp = temp.next;
				if (temp == this.head)
				{
					// Stop the process
					temp = null;
				}
			}
		}
	}
	public static void Main(String[] args)
	{
		CircularLinkedList cll = new CircularLinkedList();
		// Insert node
		cll.insert(13);
		cll.insert(12);
		cll.insert(32);
		cll.insert(1);
		cll.insert(14);
		cll.insert(91);
		cll.insert(27);
		cll.insert(124);
		cll.insert(88);
		Console.WriteLine("\n Before remove even digit sum nodes");
		cll.display();
		/*
		    Node   Digit Sum    Even
		    ----- --------    --------
		    13    [1+3] 4       Yes
		    12    [1+2] 3       No
		    32    [3+2] 5       No
		    1     [1]   1       No
		    14    [1+4] 5       No
		    91    [9+1] 10      Yes
		    27    [2+7] 9       No        
		    124   [1+2+4] 7     No
		    88    [8+8] 16      Yes
		    --------------------------
		    Result 
		    ------
		    12 → 32 → 1 → 14 → 27 → 124 ┐ 
		     └-------------------------⤶
		*/
		cll.removeEvenDigitSumNode();
		Console.WriteLine("\n After remove even digit sum nodes");
		cll.display();
	}
}

Output

 Before remove even digit sum nodes
  13  12  32  1  14  91  27  124  88
 After remove even digit sum nodes
  12  32  1  14  27  124
package main
import "fmt"
// Go Program
// Remove all the Even digit sum nodes from a circular linked list
type LinkNode struct {
	data int
	next * LinkNode
}
func getLinkNode(data int) * LinkNode {
	var me *LinkNode = &LinkNode {}
	me.data = data
	me.next = nil
	return me
}
type CircularLinkedList struct {
	head * LinkNode
	tail * LinkNode
}
func getCircularLinkedList() * CircularLinkedList {
	var me *CircularLinkedList = &CircularLinkedList {}
	// Set initial value
	me.head = nil
	me.tail = nil
	return me
}
func(this *CircularLinkedList) insert(value int) {
	var node * LinkNode = getLinkNode(value)
	if this.head == nil {
		this.head = node
	} else {
		this.tail.next = node
	}
	node.next = this.head
	this.tail = node
}
// Display node element of circular linked list
func(this CircularLinkedList) display() {
	if this.head == nil {
		fmt.Println("\n Empty Linked List")
	} else {
		// First node of linked list
		fmt.Print("  ", this.head.data)
		var temp * LinkNode = this.head.next
		// Display linked list node
		for (temp != nil && temp != this.head) {
			// Display node value
			fmt.Print("  ", temp.data)
			// visit to next node
			temp = temp.next
		}
	}
}
func(this CircularLinkedList) digitSum(num int) int {
	var n int = num
	var sum int = 0
	if n < 0 {
		n = -n
	}
	for (n > 0) {
		sum += (n % 10)
		n = n / 10
	}
	return sum
}
func(this *CircularLinkedList) removeEvenDigitSumNode() {
	if this.head == nil {
		return
	}
	var temp * LinkNode = this.head
	var auxiliary * LinkNode = this.head
	var point * LinkNode = nil
	for (temp != nil) {
		if (this.digitSum(temp.data) & 1) == 0 {
			auxiliary = temp
			temp = temp.next
			if auxiliary == this.head {
				// Remove head node
				if auxiliary == this.tail {
					// When Remove last node
					this.tail = nil
					this.head = nil
					temp = nil
					point = nil
				} else {
					this.head = temp
					this.tail.next = temp
				}
			} else if auxiliary == this.tail {
				// When Remove last node
				if point != nil {
					point.next = this.head
				}
				this.tail = point
			} else {
				// When removing intermediate node
				if point != nil {
					point.next = temp
				}
			}
			auxiliary = nil
		} else {
			point = temp
			// visit to next node
			temp = temp.next
			if temp == this.head {
				// Stop the process
				temp = nil
			}
		}
	}
}
func main() {
	var cll * CircularLinkedList = getCircularLinkedList()
	// Insert node
	cll.insert(13)
	cll.insert(12)
	cll.insert(32)
	cll.insert(1)
	cll.insert(14)
	cll.insert(91)
	cll.insert(27)
	cll.insert(124)
	cll.insert(88)
	fmt.Println("\n Before remove even digit sum nodes")
	cll.display()
	/*
	    Node   Digit Sum    Even
	    ----- --------    --------
	    13    [1+3] 4       Yes
	    12    [1+2] 3       No
	    32    [3+2] 5       No
	    1     [1]   1       No
	    14    [1+4] 5       No
	    91    [9+1] 10      Yes
	    27    [2+7] 9       No        
	    124   [1+2+4] 7     No
	    88    [8+8] 16      Yes
	    --------------------------
	    Result 
	    ------
	    12 → 32 → 1 → 14 → 27 → 124 ┐ 
	     └-------------------------⤶
	*/
	cll.removeEvenDigitSumNode()
	fmt.Println("\n After remove even digit sum nodes")
	cll.display()
}

Output

 Before remove even digit sum nodes
  13  12  32  1  14  91  27  124  88
 After remove even digit sum nodes
  12  32  1  14  27  124
<?php
// Php Program
// Remove all the Even digit sum nodes from a circular linked list
class LinkNode
{
	public $data;
	public $next;
	public	function __construct($data)
	{
		$this->data = $data;
		$this->next = NULL;
	}
}
class CircularLinkedList
{
	public $head;
	public $tail;
	public	function __construct()
	{
		$this->head = NULL;
		$this->tail = NULL;
	}
	public	function insert($value)
	{
		$node = new LinkNode($value);
		if ($this->head == NULL)
		{
			$this->head = $node;
		}
		else
		{
			$this->tail->next = $node;
		}
		$node->next = $this->head;
		$this->tail = $node;
	}
	// Display node element of circular linked list
	public	function display()
	{
		if ($this->head == NULL)
		{
			echo("\n Empty Linked List\n");
		}
		else
		{
			// First node of linked list
			echo("  ".$this->head->data);
			$temp = $this->head->next;
			// Display linked list node
			while ($temp != NULL && $temp != $this->head)
			{
				// Display node value
				echo("  ".$temp->data);
				// visit to next node
				$temp = $temp->next;
			}
		}
	}
	public	function digitSum($num)
	{
		$n = $num;
		$sum = 0;
		if ($n < 0)
		{
			$n = -$n;
		}
		while ($n > 0)
		{
			$sum += ($n % 10);
			$n = (int)($n / 10);
		}
		return $sum;
	}
	public	function removeEvenDigitSumNode()
	{
		if ($this->head == NULL)
		{
			return;
		}
		$temp = $this->head;
		$auxiliary = $this->head;
		$point = NULL;
		while ($temp != NULL)
		{
			if (($this->digitSum($temp->data) & 1) == 0)
			{
				$auxiliary = $temp;
				$temp = $temp->next;
				if ($auxiliary == $this->head)
				{
					// Remove head node
					if ($auxiliary == $this->tail)
					{
						// When Remove last node
						$this->tail = NULL;
						$this->head = NULL;
						$temp = NULL;
						$point = NULL;
					}
					else
					{
						$this->head = $temp;
						$this->tail->next = $temp;
					}
				}
				else if ($auxiliary == $this->tail)
				{
					// When Remove last node
					if ($point != NULL)
					{
						$point->next = $this->head;
					}
					$this->tail = $point;
				}
				else
				{
					// When removing intermediate node
					if ($point != NULL)
					{
						$point->next = $temp;
					}
				}
				$auxiliary = NULL;
			}
			else
			{
				$point = $temp;
				// visit to next node
				$temp = $temp->next;
				if ($temp == $this->head)
				{
					// Stop the process
					$temp = NULL;
				}
			}
		}
	}
}

function main()
{
	$cll = new CircularLinkedList();
	// Insert node
	$cll->insert(13);
	$cll->insert(12);
	$cll->insert(32);
	$cll->insert(1);
	$cll->insert(14);
	$cll->insert(91);
	$cll->insert(27);
	$cll->insert(124);
	$cll->insert(88);
	echo("\n Before remove even digit sum nodes".
		"\n");
	$cll->display();
	/*
	    Node   Digit Sum    Even
	    ----- --------    --------
	    13    [1+3] 4       Yes
	    12    [1+2] 3       No
	    32    [3+2] 5       No
	    1     [1]   1       No
	    14    [1+4] 5       No
	    91    [9+1] 10      Yes
	    27    [2+7] 9       No        
	    124   [1+2+4] 7     No
	    88    [8+8] 16      Yes
	    --------------------------
	    Result 
	    ------
	    12 → 32 → 1 → 14 → 27 → 124 ┐ 
	     └-------------------------⤶
	*/
	$cll->removeEvenDigitSumNode();
	echo("\n After remove even digit sum nodes".
		"\n");
	$cll->display();
}
main();

Output

 Before remove even digit sum nodes
  13  12  32  1  14  91  27  124  88
 After remove even digit sum nodes
  12  32  1  14  27  124
// Node JS Program
// Remove all the Even digit sum nodes from a circular linked list
class LinkNode
{
	constructor(data)
	{
		this.data = data;
		this.next = null;
	}
}
class CircularLinkedList
{
	constructor()
	{
		this.head = null;
		this.tail = null;
	}
	insert(value)
	{
		var node = new LinkNode(value);
		if (this.head == null)
		{
			this.head = node;
		}
		else
		{
			this.tail.next = node;
		}
		node.next = this.head;
		this.tail = node;
	}
	// Display node element of circular linked list
	display()
	{
		if (this.head == null)
		{
			console.log("\n Empty Linked List");
		}
		else
		{
			// First node of linked list
			process.stdout.write("  " + this.head.data);
			var temp = this.head.next;
			// Display linked list node
			while (temp != null && temp != this.head)
			{
				// Display node value
				process.stdout.write("  " + temp.data);
				// visit to next node
				temp = temp.next;
			}
		}
	}
	digitSum(num)
	{
		var n = num;
		var sum = 0;
		if (n < 0)
		{
			n = -n;
		}
		while (n > 0)
		{
			sum += (n % 10);
			n = parseInt(n / 10);
		}
		return sum;
	}
	removeEvenDigitSumNode()
	{
		if (this.head == null)
		{
			return;
		}
		var temp = this.head;
		var auxiliary = this.head;
		var point = null;
		while (temp != null)
		{
			if ((this.digitSum(temp.data) & 1) == 0)
			{
				auxiliary = temp;
				temp = temp.next;
				if (auxiliary == this.head)
				{
					// Remove head node
					if (auxiliary == this.tail)
					{
						// When Remove last node
						this.tail = null;
						this.head = null;
						temp = null;
						point = null;
					}
					else
					{
						this.head = temp;
						this.tail.next = temp;
					}
				}
				else if (auxiliary == this.tail)
				{
					// When Remove last node
					if (point != null)
					{
						point.next = this.head;
					}
					this.tail = point;
				}
				else
				{
					// When removing intermediate node
					if (point != null)
					{
						point.next = temp;
					}
				}
				auxiliary = null;
			}
			else
			{
				point = temp;
				// visit to next node
				temp = temp.next;
				if (temp == this.head)
				{
					// Stop the process
					temp = null;
				}
			}
		}
	}
}

function main()
{
	var cll = new CircularLinkedList();
	// Insert node
	cll.insert(13);
	cll.insert(12);
	cll.insert(32);
	cll.insert(1);
	cll.insert(14);
	cll.insert(91);
	cll.insert(27);
	cll.insert(124);
	cll.insert(88);
	console.log("\n Before remove even digit sum nodes");
	cll.display();
	/*
	    Node   Digit Sum    Even
	    ----- --------    --------
	    13    [1+3] 4       Yes
	    12    [1+2] 3       No
	    32    [3+2] 5       No
	    1     [1]   1       No
	    14    [1+4] 5       No
	    91    [9+1] 10      Yes
	    27    [2+7] 9       No        
	    124   [1+2+4] 7     No
	    88    [8+8] 16      Yes
	    --------------------------
	    Result 
	    ------
	    12 → 32 → 1 → 14 → 27 → 124 ┐ 
	     └-------------------------⤶
	*/
	cll.removeEvenDigitSumNode();
	console.log("\n After remove even digit sum nodes");
	cll.display();
}
main();

Output

 Before remove even digit sum nodes
  13  12  32  1  14  91  27  124  88
 After remove even digit sum nodes
  12  32  1  14  27  124
#  Python 3 Program
#  Remove all the Even digit sum nodes from a circular linked list
class LinkNode :
	def __init__(self, data) :
		self.data = data
		self.next = None
	

class CircularLinkedList :
	def __init__(self) :
		self.head = None
		self.tail = None
	
	def insert(self, value) :
		node = LinkNode(value)
		if (self.head == None) :
			self.head = node
		else :
			self.tail.next = node
		
		node.next = self.head
		self.tail = node
	
	#  Display node element of circular linked list
	def display(self) :
		if (self.head == None) :
			print("\n Empty Linked List")
		else :
			#  First node of linked list
			print(" ", self.head.data, end = "")
			temp = self.head.next
			#  Display linked list node
			while (temp != None and temp != self.head) :
				#  Display node value
				print("  ", temp.data, end = "")
				#  visit to next node
				temp = temp.next
			
		
	
	def digitSum(self, num) :
		n = num
		sum = 0
		if (n < 0) :
			n = -n
		
		while (n > 0) :
			sum += (n % 10)
			n = int(n / 10)
		
		return sum
	
	def removeEvenDigitSumNode(self) :
		if (self.head == None) :
			return
		
		temp = self.head
		auxiliary = self.head
		point = None
		while (temp != None) :
			if ((self.digitSum(temp.data) & 1) == 0) :
				auxiliary = temp
				temp = temp.next
				if (auxiliary == self.head) :
					#  Remove head node
					if (auxiliary == self.tail) :
						#  When Remove last node
						self.tail = None
						self.head = None
						temp = None
						point = None
					else :
						self.head = temp
						self.tail.next = temp
					
				elif (auxiliary == self.tail) :
					#  When Remove last node
					if (point != None) :
						point.next = self.head
					
					self.tail = point
				else :
					#  When removing intermediate node
					if (point != None) :
						point.next = temp
					
				
				auxiliary = None
			else :
				point = temp
				#  visit to next node
				temp = temp.next
				if (temp == self.head) :
					#  Stop the process
					temp = None
				
			
		
	

def main() :
	cll = CircularLinkedList()
	#  Insert node
	cll.insert(13)
	cll.insert(12)
	cll.insert(32)
	cll.insert(1)
	cll.insert(14)
	cll.insert(91)
	cll.insert(27)
	cll.insert(124)
	cll.insert(88)
	print("\n Before remove even digit sum nodes")
	cll.display()
	#    Node   Digit Sum    Even
	#    ----- --------    --------
	#    13    [1+3] 4       Yes
	#    12    [1+2] 3       No
	#    32    [3+2] 5       No
	#    1     [1]   1       No
	#    14    [1+4] 5       No
	#    91    [9+1] 10      Yes
	#    27    [2+7] 9       No        
	#    124   [1+2+4] 7     No
	#    88    [8+8] 16      Yes
	#    --------------------------
	#    Result 
	#    ------
	#    12 → 32 → 1 → 14 → 27 → 124 ┐ 
	#     └-------------------------⤶
	cll.removeEvenDigitSumNode()
	print("\n After remove even digit sum nodes")
	cll.display()

if __name__ == "__main__": main()

Output

 Before remove even digit sum nodes
  13   12   32   1   14   91   27   124   88
 After remove even digit sum nodes
  12   32   1   14   27   124
#  Ruby Program
#  Remove all the Even digit sum nodes from a circular linked list
class LinkNode 
	# Define the accessor and reader of class LinkNode
	attr_reader :data, :next
	attr_accessor :data, :next
	def initialize(data) 
		self.data = data
		self.next = nil
	end

end

class CircularLinkedList 
	# Define the accessor and reader of class CircularLinkedList
	attr_reader :head, :tail
	attr_accessor :head, :tail
	def initialize() 
		self.head = nil
		self.tail = nil
	end

	def insert(value) 
		node = LinkNode.new(value)
		if (self.head == nil) 
			self.head = node
		else
 
			self.tail.next = node
		end

		node.next = self.head
		self.tail = node
	end

	#  Display node element of circular linked list
	def display() 
		if (self.head == nil) 
			print("\n Empty Linked List", "\n")
		else
 
			#  First node of linked list
			print("  ", self.head.data)
			temp = self.head.next
			#  Display linked list node
			while (temp != nil && temp != self.head) 
				#  Display node value
				print("  ", temp.data)
				#  visit to next node
				temp = temp.next
			end

		end

	end

	def digitSum(num) 
		n = num
		sum = 0
		if (n < 0) 
			n = -n
		end

		while (n > 0) 
			sum += (n % 10)
			n = n / 10
		end

		return sum
	end

	def removeEvenDigitSumNode() 
		if (self.head == nil) 
			return
		end

		temp = self.head
		auxiliary = self.head
		point = nil
		while (temp != nil) 
			if ((self.digitSum(temp.data) & 1) == 0) 
				auxiliary = temp
				temp = temp.next
				if (auxiliary == self.head) 
					#  Remove head node
					if (auxiliary == self.tail) 
						#  When Remove last node
						self.tail = nil
						self.head = nil
						temp = nil
						point = nil
					else
 
						self.head = temp
						self.tail.next = temp
					end

				elsif (auxiliary == self.tail) 
					#  When Remove last node
					if (point != nil) 
						point.next = self.head
					end

					self.tail = point
				else
 
					#  When removing intermediate node
					if (point != nil) 
						point.next = temp
					end

				end

				auxiliary = nil
			else
 
				point = temp
				#  visit to next node
				temp = temp.next
				if (temp == self.head) 
					#  Stop the process
					temp = nil
				end

			end

		end

	end

end

def main() 
	cll = CircularLinkedList.new()
	#  Insert node
	cll.insert(13)
	cll.insert(12)
	cll.insert(32)
	cll.insert(1)
	cll.insert(14)
	cll.insert(91)
	cll.insert(27)
	cll.insert(124)
	cll.insert(88)
	print("\n Before remove even digit sum nodes", "\n")
	cll.display()
	#    Node   Digit Sum    Even
	#    ----- --------    --------
	#    13    [1+3] 4       Yes
	#    12    [1+2] 3       No
	#    32    [3+2] 5       No
	#    1     [1]   1       No
	#    14    [1+4] 5       No
	#    91    [9+1] 10      Yes
	#    27    [2+7] 9       No        
	#    124   [1+2+4] 7     No
	#    88    [8+8] 16      Yes
	#    --------------------------
	#    Result 
	#    ------
	#    12 → 32 → 1 → 14 → 27 → 124 ┐ 
	#     └-------------------------⤶
	cll.removeEvenDigitSumNode()
	print("\n After remove even digit sum nodes", "\n")
	cll.display()
end

main()

Output

 Before remove even digit sum nodes
  13  12  32  1  14  91  27  124  88
 After remove even digit sum nodes
  12  32  1  14  27  124
// Scala Program
// Remove all the Even digit sum nodes from a circular linked list
class LinkNode(var data: Int,
	var next: LinkNode)
{
	def this(data: Int)
	{
		this(data, null);
	}
}
class CircularLinkedList(var head: LinkNode,
	var tail: LinkNode)
{
	def this()
	{
		this(null, null);
	}
	def insert(value: Int): Unit = {
		var node: LinkNode = new LinkNode(value);
		if (this.head == null)
		{
			this.head = node;
		}
		else
		{
			this.tail.next = node;
		}
		node.next = this.head;
		this.tail = node;
	}
	// Display node element of circular linked list
	def display(): Unit = {
		if (this.head == null)
		{
			println("\n Empty Linked List");
		}
		else
		{
			// First node of linked list
			print("  " + this.head.data);
			var temp: LinkNode = this.head.next;
			// Display linked list node
			while (temp != null && temp != this.head)
			{
				// Display node value
				print("  " + temp.data);
				// visit to next node
				temp = temp.next;
			}
		}
	}
	def digitSum(num: Int): Int = {
		var n: Int = num;
		var sum: Int = 0;
		if (n < 0)
		{
			n = -n;
		}
		while (n > 0)
		{
			sum += (n % 10);
			n = n / 10;
		}
		return sum;
	}
	def removeEvenDigitSumNode(): Unit = {
		if (this.head == null)
		{
			return;
		}
		var temp: LinkNode = this.head;
		var auxiliary: LinkNode = this.head;
		var point: LinkNode = null;
		while (temp != null)
		{
			if ((digitSum(temp.data) & 1) == 0)
			{
				auxiliary = temp;
				temp = temp.next;
				if (auxiliary == this.head)
				{
					// Remove head node
					if (auxiliary == this.tail)
					{
						// When Remove last node
						this.tail = null;
						this.head = null;
						temp = null;
						point = null;
					}
					else
					{
						this.head = temp;
						this.tail.next = temp;
					}
				}
				else if (auxiliary == this.tail)
				{
					// When Remove last node
					if (point != null)
					{
						point.next = this.head;
					}
					this.tail = point;
				}
				else
				{
					// When removing intermediate node
					if (point != null)
					{
						point.next = temp;
					}
				}
				auxiliary = null;
			}
			else
			{
				point = temp;
				// visit to next node
				temp = temp.next;
				if (temp == this.head)
				{
					// Stop the process
					temp = null;
				}
			}
		}
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		var cll: CircularLinkedList = new CircularLinkedList();
		// Insert node
		cll.insert(13);
		cll.insert(12);
		cll.insert(32);
		cll.insert(1);
		cll.insert(14);
		cll.insert(91);
		cll.insert(27);
		cll.insert(124);
		cll.insert(88);
		println("\n Before remove even digit sum nodes");
		cll.display();
		/*
		    Node   Digit Sum    Even
		    ----- --------    --------
		    13    [1+3] 4       Yes
		    12    [1+2] 3       No
		    32    [3+2] 5       No
		    1     [1]   1       No
		    14    [1+4] 5       No
		    91    [9+1] 10      Yes
		    27    [2+7] 9       No        
		    124   [1+2+4] 7     No
		    88    [8+8] 16      Yes
		    --------------------------
		    Result 
		    ------
		    12 → 32 → 1 → 14 → 27 → 124 ┐ 
		     └-------------------------⤶
		*/
		cll.removeEvenDigitSumNode();
		println("\n After remove even digit sum nodes");
		cll.display();
	}
}

Output

 Before remove even digit sum nodes
  13  12  32  1  14  91  27  124  88
 After remove even digit sum nodes
  12  32  1  14  27  124
// Swift 4 Program
// Remove all the Even digit sum nodes from a circular linked list
class LinkNode
{
	var data: Int;
	var next: LinkNode? ;
	init(_ data: Int)
	{
		self.data = data;
		self.next = nil;
	}
}
class CircularLinkedList
{
	var head: LinkNode? ;
	var tail: LinkNode? ;
	init()
	{
		self.head = nil;
		self.tail = nil;
	}
	func insert(_ value: Int)
	{
		let node: LinkNode = LinkNode(value);
		if (self.head == nil)
		{
			self.head = node;
		}
		else
		{
			self.tail!.next = node;
		}
		node.next = self.head;
		self.tail = node;
	}
	// Display node element of circular linked list
	func display()
	{
		if (self.head == nil)
		{
			print("\n Empty Linked List");
		}
		else
		{
			// First node of linked list
			print("  ", self.head!.data, terminator: "");
			var temp: LinkNode? = self.head!.next;
			// Display linked list node
			while (temp  != nil && !(temp === self.head))
			{
				// Display node value
				print("  ", temp!.data, terminator: "");
				// visit to next node
				temp = temp!.next;
			}
		}
	}
	func digitSum(_ num: Int) -> Int
	{
		var n: Int = num;
		var sum: Int = 0;
		if (n < 0)
		{
			n = -n;
		}
		while (n > 0)
		{
			sum += (n % 10);
			n = n / 10;
		}
		return sum;
	}
	func removeEvenDigitSumNode()
	{
		if (self.head == nil)
		{
			return;
		}
		var temp: LinkNode? = self.head;
		var auxiliary: LinkNode? = self.head;
		var point: LinkNode? = nil;
		while (temp  != nil)
		{
			if ((self.digitSum(temp!.data) & 1) == 0)
			{
				auxiliary = temp;
				temp = temp!.next;
				if (auxiliary === self.head)
				{
					// Remove head node
					if (auxiliary === self.tail)
					{
						// When Remove last node
						self.tail = nil;
						self.head = nil;
						temp = nil;
						point = nil;
					}
					else
					{
						self.head = temp;
						self.tail!.next = temp;
					}
				}
				else if (auxiliary === self.tail)
				{
					// When Remove last node
					if (point  != nil)
					{
						point!.next = self.head;
					}
					self.tail = point;
				}
				else
				{
					// When removing intermediate node
					if (point  != nil)
					{
						point!.next = temp;
					}
				}
				auxiliary = nil;
			}
			else
			{
				point = temp;
				// visit to next node
				temp = temp!.next;
				if (temp === self.head)
				{
					// Stop the process
					temp = nil;
				}
			}
		}
	}
}
func main()
{
	let cll: CircularLinkedList = CircularLinkedList();
	// Insert node
	cll.insert(13);
	cll.insert(12);
	cll.insert(32);
	cll.insert(1);
	cll.insert(14);
	cll.insert(91);
	cll.insert(27);
	cll.insert(124);
	cll.insert(88);
	print("\n Before remove even digit sum nodes");
	cll.display();
	/*
	    Node   Digit Sum    Even
	    ----- --------    --------
	    13    [1+3] 4       Yes
	    12    [1+2] 3       No
	    32    [3+2] 5       No
	    1     [1]   1       No
	    14    [1+4] 5       No
	    91    [9+1] 10      Yes
	    27    [2+7] 9       No        
	    124   [1+2+4] 7     No
	    88    [8+8] 16      Yes
	    --------------------------
	    Result 
	    ------
	    12 → 32 → 1 → 14 → 27 → 124 ┐ 
	     └-------------------------⤶
	*/
	cll.removeEvenDigitSumNode();
	print("\n After remove even digit sum nodes");
	cll.display();
}
main();

Output

 Before remove even digit sum nodes
   13   12   32   1   14   91   27   124   88
 After remove even digit sum nodes
   12   32   1   14   27   124
// Kotlin Program
// Remove all the Even digit sum nodes from a circular linked list
class LinkNode
{
	var data: Int;
	var next: LinkNode ? ;
	constructor(data: Int)
	{
		this.data = data;
		this.next = null;
	}
}
class CircularLinkedList
{
	var head: LinkNode ? ;
	var tail: LinkNode ? ;
	constructor()
	{
		this.head = null;
		this.tail = null;
	}
	fun insert(value: Int): Unit
	{
		val node: LinkNode = LinkNode(value);
		if (this.head == null)
		{
			this.head = node;
		}
		else
		{
			this.tail?.next = node;
		}
		node.next = this.head;
		this.tail = node;
	}
	// Display node element of circular linked list
	fun display(): Unit
	{
		if (this.head == null)
		{
			println("\n Empty Linked List");
		}
		else
		{
			// First node of linked list
			print("  " + this.head?.data);
			var temp: LinkNode ? = this.head?.next;
			// Display linked list node
			while (temp != null && temp != this.head)
			{
				// Display node value
				print("  " + temp.data);
				// visit to next node
				temp = temp.next;
			}
		}
	}
	fun digitSum(num: Int): Int
	{
		var n: Int = num;
		var sum: Int = 0;
		if (n < 0)
		{
			n = -n;
		}
		while (n > 0)
		{
			sum += (n % 10);
			n = n / 10;
		}
		return sum;
	}
	fun removeEvenDigitSumNode(): Unit
	{
		if (this.head == null)
		{
			return;
		}
		var temp: LinkNode ? = this.head;
		var auxiliary: LinkNode ? ;
		var point: LinkNode ? = null;
		while (temp != null)
		{
			if ((this.digitSum(temp.data) and 1) == 0)
			{
				auxiliary = temp;
				temp = temp.next;
				if (auxiliary == this.head)
				{
					// Remove head node
					if (auxiliary == this.tail)
					{
						// When Remove last node
						this.tail = null;
						this.head = null;
						temp = null;
						point = null;
					}
					else
					{
						this.head = temp;
						this.tail?.next = temp;
					}
				}
				else if (auxiliary == this.tail)
				{
					// When Remove last node
					if (point != null)
					{
						point.next = this.head;
					}
					this.tail = point;
				}
				else
				{
					// When removing intermediate node
					if (point != null)
					{
						point.next = temp;
					}
				}
	
			}
			else
			{
				point = temp;
				// visit to next node
				temp = temp.next;
				if (temp == this.head)
				{
					// Stop the process
					temp = null;
				}
			}
		}
	}
}
fun main(args: Array < String > ): Unit
{
	val cll: CircularLinkedList = CircularLinkedList();
	// Insert node
	cll.insert(13);
	cll.insert(12);
	cll.insert(32);
	cll.insert(1);
	cll.insert(14);
	cll.insert(91);
	cll.insert(27);
	cll.insert(124);
	cll.insert(88);
	println("\n Before remove even digit sum nodes");
	cll.display();
	/*
	    Node   Digit Sum    Even
	    ----- --------    --------
	    13    [1+3] 4       Yes
	    12    [1+2] 3       No
	    32    [3+2] 5       No
	    1     [1]   1       No
	    14    [1+4] 5       No
	    91    [9+1] 10      Yes
	    27    [2+7] 9       No        
	    124   [1+2+4] 7     No
	    88    [8+8] 16      Yes
	    --------------------------
	    Result 
	    ------
	    12 → 32 → 1 → 14 → 27 → 124 ┐ 
	     └-------------------------⤶
	*/
	cll.removeEvenDigitSumNode();
	println("\n After remove even digit sum nodes");
	cll.display();
}

Output

 Before remove even digit sum nodes
  13  12  32  1  14  91  27  124  88
 After remove even digit sum nodes
  12  32  1  14  27  124


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