Check if two stacks are equal

Here given code implementation process.

/*
    C Program 
    Check if two stacks are equal
*/
#include <stdio.h>
#include <stdlib.h>

// Define stack node
struct StackNode
{
    int element;
    struct StackNode *next;
};
// Define a custom stack
struct MyStack
{
    struct StackNode *top;
    int size;
};

struct MyStack *newStack()
{
    //Make a stack
    struct MyStack *stack = (struct MyStack *) malloc(sizeof(struct MyStack));
    if (stack != NULL)
    {
        //Set node values
        stack->top = NULL;
        stack->size = 0;
    }
    else
    {
        printf("\nMemory overflow when create new stack\n");
    }
}
// Returns the status of empty or non empty stacks
int isEmpty(struct MyStack *stack)
{
    if (stack->size > 0 && stack->top != NULL)
    {
        return 0;
    }
    else
    {
        return 1;
    }
}
// Add node at the top of stack
void push(struct MyStack *stack, int element)
{

    // Make a new node
    struct StackNode *node = (struct StackNode *) malloc(sizeof(struct StackNode));
    
    if (node == NULL)
    {
        printf("\nMemory overflow when create new stack Node \n");
    }
    else
    {
        node->element = element;
        node->next    = stack->top;
    }

    // Add stack element
    stack->top = node;
    stack->size++;
}
// return top element of stack
int peek(struct MyStack *stack)
{
    return stack->top->element;
}
// Remove top element of stack
void pop(struct MyStack *stack)
{
    if (isEmpty(stack) == 0)
    {
        struct StackNode *temp = stack->top;
        // Change top element of stack
        stack->top = temp->next;
        // remove previous top
        free(temp);
        temp = NULL;
        stack->size--;
    }
}
// Determine that given stacks are equal or not
int compareStack(struct MyStack*s1,struct MyStack*s2)
{

    if(s1->size != s2->size)
    {
        // When number of elements are not same
        return 0;
    }

    // This is backup stack
    struct MyStack*b1=newStack();
    struct MyStack*b2=newStack();

    int status = 1;
    // When both stack contains elements 
    // And status are active
    while(isEmpty(s1)==0 && isEmpty(s2)==0 && status == 1)
    {
        if(peek(s1) != peek(s2))
        {
            // When data elements are not same
           status = 0; 
        }
        else
        {
            // Backup the actual elements
            push(b1,peek(s1));
            push(b2,peek(s2));
            // Remove top element of stack
            pop(s1);
            pop(s2);
        }
    }
    // Puts the all pop element into actual stack
    while(isEmpty(b1)==0)
    {
        push(s1,peek(b1));
        push(s2,peek(b2));
        pop(b1);
        pop(b2);
    }

    return status;
}
// Print stack element 
void printData(struct MyStack *s)
{
    if(isEmpty(s)==1)
    {
        return;
    }
    int data = peek(s);
    printf("  %d", data);
    pop(s);
    printData(s);
    push(s,data);
  
   
}
// Handle request to print stack elements
void printStack(struct MyStack*s1,struct MyStack*s2)
{
    printf("\n Stack 1 \n");
    printData(s1);
    printf("\n Stack 2 \n");
    printData(s2);
}
int main()
{   
    // Create two empty stack
    struct MyStack*s1 = newStack();
    struct MyStack*s2 = newStack();

    // First stack
    push(s1,1);
    push(s1,2);
    push(s1,3);
    
    // Second stack
    push(s2,1);
    push(s2,2);
    push(s2,3);

    printStack(s1,s2);
    
    if(compareStack(s1,s2)==1)
    {

        printf("\n Stack are equal\n");
    }
    else
    {
        printf("\n Stack are not equal\n");
    }

    push(s1,4);
    push(s2,5);

    printStack(s1,s2);
    if(compareStack(s1,s2)==1)
    {
        printf("\n Stack are equal\n");
    }
    else
    {
        printf("\n Stack are not equal\n");
    }

    return 0;
}

Output

 Stack 1
  3  2  1
 Stack 2
  3  2  1
 Stack are equal

 Stack 1
  4  3  2  1
 Stack 2
  5  3  2  1
 Stack are not equal
/*
   Java Program for
   Check if two stacks are equal
*/
// Define stack node
class StackNode
{
    public int element;
    public StackNode next;
    public StackNode(int element, StackNode top)
    {
        this.element = element;
        this.next = top;
    }
}
// Define a custom stack
class MyStack
{
    public StackNode top;
    public int size;
    public MyStack()
    {
        //Set node values
        this.top = null;
        this.size = 0;
    }
    // Add node at the top of stack
    public void push(int element)
    {
        this.top = new StackNode(element, this.top);
        this.size++;
    }
    public boolean isEmpty()
    {
        if (this.size > 0 && this.top != null)
        {
            return false;
        }
        else
        {
            return true;
        }
    }
    // Remove top element of stack
    public void pop()
    {
        if (this.size > 0 && this.top != null)
        {
            StackNode temp = this.top;
            // Change top element of stack
            this.top = temp.next;
            // remove previous top
            temp = null;
            this.size--;
        }
    }
    // return top element of stack
    public int peek()
    {
        if (this.top == null)
        {
            return -1;
        }
        return this.top.element;
    }
    public int getSize()
    {
        return this.size;
    }
}

public class Compares
{
    // Determine that given stacks are equal or not
    public boolean compareStack(MyStack s1, MyStack s2)
    {
        if (s1.getSize() != s2.getSize())
        {
            // When number of elements are not same
            return false;
        }
        // This is backup stack
        MyStack b1 = new MyStack();
        MyStack b2 = new MyStack();
        boolean status = true;
        // When both stack contains elements 
        // And status are active
        while (s1.isEmpty() == false && s2.isEmpty() == false && status == true)
        {
            if (s1.peek() != s2.peek())
            {
                // When data elements are not same
                status = false;
            }
            else
            {
                // Backup the actual elements
                b1.push(s1.peek());
                b2.push(s2.peek());
                // Remove top element of stack
                s1.pop();
                s2.pop();
            }
        }
        // Puts the all pop element into actual stack
        while (b1.isEmpty() == false)
        {
            s1.push(b1.peek());
            s2.push(b2.peek());
            b1.pop();
            b1.pop();
        }
        return status;
    }
    // Print stack element 
    public void printData(MyStack s)
    {
        if (s.isEmpty() == true)
        {
            return;
        }
        int data = s.peek();
        System.out.print(" " + data );
        s.pop();
        printData(s);
        s.push(data);
    }
    // Handle request to print stack elements
    public void printStack(MyStack s1, MyStack s2)
    {
        System.out.print("\n Stack 1 \n");
        printData(s1);
        System.out.print("\n Stack 2 \n");
        printData(s2);
    }    
    public static void main(String[] args)
    {
        // Create two empty stack
        MyStack s1 = new MyStack();
        MyStack s2 = new MyStack();

        Compares task = new Compares();
        // First stack
        s1.push(1);
        s1.push(2);
        s1.push(3);
        // Second stack
        s2.push(1);
        s2.push(2);
        s2.push(3);
        task.printStack(s1, s2);
        if (task.compareStack(s1, s2) == true)
        {
            System.out.print("\n Stack are equal\n");
        }
        else
        {
            System.out.print("\n Stack are not equal\n");
        }
        s1.push(4);
        s2.push(5);
        task.printStack(s1, s2);
        if (task.compareStack(s1, s2) == true)
        {
            System.out.print("\n Stack are equal\n");
        }
        else
        {
            System.out.print("\n Stack are not equal\n");
        }
    }
}

Output

 Stack 1
 3 2 1
 Stack 2
 3 2 1
 Stack are equal

 Stack 1
 4 3 1
 Stack 2
 5 1 1
 Stack are not equal
// Include header file
#include <iostream>

using namespace std;
/*
   C++ Program for
   Check if two stacks are equal
*/
// Define stack node
class StackNode
{
	public: 
    int element;
	StackNode *next;
	StackNode(int element, StackNode *top)
	{
		this->element = element;
		this->next = top;
	}
};
// Define a custom stack
class MyStack
{
	public: StackNode *top;
	int size;
	MyStack()
	{
		//Set node values
		this->top = NULL;
		this->size = 0;
	}
	// Add node at the top of stack
	void push(int element)
	{
		this->top = new StackNode(element, this->top);
		this->size++;
	}
	bool isEmpty()
	{
		if (this->size > 0 && this->top != NULL)
		{
			return false;
		}
		else
		{
			return true;
		}
	}
	// Remove top element of stack
	void pop()
	{
		if (this->size > 0 && this->top != NULL)
		{
			StackNode *temp = this->top;
			// Change top element of stack
			this->top = temp->next;
			// remove previous top
                        delete temp;
			temp = NULL;
			this->size--;
		}
	}
	// return top element of stack
	int peek()
	{
		if (this->top == NULL)
		{
			return -1;
		}
		return this->top->element;
	}
	int getSize()
	{
		return this->size;
	}
};
class Compares
{
	public:
		// Determine that given stacks are equal or not
		bool compareStack(MyStack s1, MyStack s2)
		{
			if (s1.getSize() != s2.getSize())
			{
				// When number of elements are not same
				return false;
			}
			// This is backup stack
			MyStack b1 = MyStack();
			MyStack b2 = MyStack();
			bool status = true;
			// When both stack contains elements
			// And status are active
			while (s1.isEmpty() == false && s2.isEmpty() == false && status == true)
			{
				if (s1.peek() != s2.peek())
				{
					// When data elements are not same
					status = false;
				}
				else
				{
					// Backup the actual elements
					b1.push(s1.peek());
					b2.push(s2.peek());
					// Remove top element of stack
					s1.pop();
					s2.pop();
				}
			}
			// Puts the all pop element into actual stack
			while (b1.isEmpty() == false)
			{
				s1.push(b1.peek());
				s2.push(b2.peek());
				b1.pop();
				b1.pop();
			}
			return status;
		}
	// Print stack element
	void printData(MyStack s)
	{
		if (s.isEmpty() == true)
		{
			return;
		}
		int data = s.peek();
		cout << " " << data;
		s.pop();
		this->printData(s);
		s.push(data);
	}
	// Handle request to print stack elements
	void printStack(MyStack s1, MyStack s2)
	{
		cout << "\n Stack 1 \n";
		this->printData(s1);
		cout << "\n Stack 2 \n";
		this->printData(s2);
	}
};
int main()
{
	// Create two empty stack
	MyStack s1 = MyStack();
	MyStack s2 = MyStack();
	Compares task = Compares();
	// First stack
	s1.push(1);
	s1.push(2);
	s1.push(3);
	// Second stack
	s2.push(1);
	s2.push(2);
	s2.push(3);
	task.printStack(s1, s2);
	if (task.compareStack(s1, s2) == true)
	{
		cout << "\n Stack are equal\n";
	}
	else
	{
		cout << "\n Stack are not equal\n";
	}
	s1.push(4);
	s2.push(5);
	task.printStack(s1, s2);
	if (task.compareStack(s1, s2) == true)
	{
		cout << "\n Stack are equal\n";
	}
	else
	{
		cout << "\n Stack are not equal\n";
	}
	return 0;
}

Output

 Stack 1
 3 2 1
 Stack 2
 3 2 1
 Stack are equal

 Stack 1
 4 3 2 1
 Stack 2
 5 3 2 1
 Stack are not equal
// Include namespace system
using System;
/*
   C# Program for
   Check if two stacks are equal
*/
// Define stack node
public class StackNode
{
	public int element;
	public StackNode next;
	public StackNode(int element, StackNode top)
	{
		this.element = element;
		this.next = top;
	}
}
// Define a custom stack
public class MyStack
{
	public StackNode top;
	public int size;
	public MyStack()
	{
		//Set node values
		this.top = null;
		this.size = 0;
	}
	// Add node at the top of stack
	public void push(int element)
	{
		this.top = new StackNode(element, this.top);
		this.size++;
	}
	public Boolean isEmpty()
	{
		if (this.size > 0 && this.top != null)
		{
			return false;
		}
		else
		{
			return true;
		}
	}
	// Remove top element of stack
	public void pop()
	{
		if (this.size > 0 && this.top != null)
		{
			StackNode temp = this.top;
			// Change top element of stack
			this.top = temp.next;
			// remove previous top
			temp = null;
			this.size--;
		}
	}
	// return top element of stack
	public int peek()
	{
		if (this.top == null)
		{
			return -1;
		}
		return this.top.element;
	}
	public int getSize()
	{
		return this.size;
	}
}
public class Compares
{
	// Determine that given stacks are equal or not
	public Boolean compareStack(MyStack s1, MyStack s2)
	{
		if (s1.getSize() != s2.getSize())
		{
			// When number of elements are not same
			return false;
		}
		// This is backup stack
		MyStack b1 = new MyStack();
		MyStack b2 = new MyStack();
		Boolean status = true;
		// When both stack contains elements
		// And status are active
		while (s1.isEmpty() == false && s2.isEmpty() == false && status == true)
		{
			if (s1.peek() != s2.peek())
			{
				// When data elements are not same
				status = false;
			}
			else
			{
				// Backup the actual elements
				b1.push(s1.peek());
				b2.push(s2.peek());
				// Remove top element of stack
				s1.pop();
				s2.pop();
			}
		}
		// Puts the all pop element into actual stack
		while (b1.isEmpty() == false)
		{
			s1.push(b1.peek());
			s2.push(b2.peek());
			b1.pop();
			b1.pop();
		}
		return status;
	}
	// Print stack element
	public void printData(MyStack s)
	{
		if (s.isEmpty() == true)
		{
			return;
		}
		int data = s.peek();
		Console.Write(" " + data);
		s.pop();
		printData(s);
		s.push(data);
	}
	// Handle request to print stack elements
	public void printStack(MyStack s1, MyStack s2)
	{
		Console.Write("\n Stack 1 \n");
		printData(s1);
		Console.Write("\n Stack 2 \n");
		printData(s2);
	}
	public static void Main(String[] args)
	{
		// Create two empty stack
		MyStack s1 = new MyStack();
		MyStack s2 = new MyStack();
		Compares task = new Compares();
		// First stack
		s1.push(1);
		s1.push(2);
		s1.push(3);
		// Second stack
		s2.push(1);
		s2.push(2);
		s2.push(3);
		task.printStack(s1, s2);
		if (task.compareStack(s1, s2) == true)
		{
			Console.Write("\n Stack are equal\n");
		}
		else
		{
			Console.Write("\n Stack are not equal\n");
		}
		s1.push(4);
		s2.push(5);
		task.printStack(s1, s2);
		if (task.compareStack(s1, s2) == true)
		{
			Console.Write("\n Stack are equal\n");
		}
		else
		{
			Console.Write("\n Stack are not equal\n");
		}
	}
}

Output

 Stack 1
 3 2 1
 Stack 2
 3 2 1
 Stack are equal

 Stack 1
 4 3 1
 Stack 2
 5 1 1
 Stack are not equal
<?php
/*
   Php Program for
   Check if two stacks are equal
*/
// Define stack node
class StackNode
{
	public $element;
	public $next;

	function __construct($element, $top)
	{
		$this->element = $element;
		$this->next = $top;
	}
}
// Define a custom stack
class MyStack
{
	public $top;
	public $size;

	function __construct()
	{
		//Set node values
		$this->top = null;
		$this->size = 0;
	}
	// Add node at the top of stack
	public	function push($element)
	{
		$this->top = new StackNode($element, $this->top);
		$this->size++;
	}
	public	function isEmpty()
	{
		if ($this->size > 0 && $this->top != null)
		{
			return false;
		}
		else
		{
			return true;
		}
	}
	// Remove top element of stack
	public	function pop()
	{
		if ($this->size > 0 && $this->top != null)
		{
			$temp = $this->top;
			// Change top element of stack
			$this->top = $temp->next;
			// remove previous top
			$temp = null;
			$this->size--;
		}
	}
	// return top element of stack
	public	function peek()
	{
		if ($this->top == null)
		{
			return -1;
		}
		return $this->top->element;
	}
	public	function getSize()
	{
		return $this->size;
	}
}
class Compares
{
	// Determine that given stacks are equal or not
	public	function compareStack($s1, $s2)
	{
		if ($s1->getSize() != $s2->getSize())
		{
			// When number of elements are not same
			return false;
		}
		// This is backup stack
		$b1 = new MyStack();
		$b2 = new MyStack();
		$status = true;
		// When both stack contains elements
		// And status are active
		while ($s1->isEmpty() == false && $s2->isEmpty() == false && $status == true)
		{
			if ($s1->peek() != $s2->peek())
			{
				// When data elements are not same
				$status = false;
			}
			else
			{
				// Backup the actual elements
				$b1->push($s1->peek());
				$b2->push($s2->peek());
				// Remove top element of stack
				$s1->pop();
				$s2->pop();
			}
		}
		// Puts the all pop element into actual stack
		while ($b1->isEmpty() == false)
		{
			$s1->push($b1->peek());
			$s2->push($b2->peek());
			$b1->pop();
			$b1->pop();
		}
		return $status;
	}
	// Print stack element
	public	function printData($s)
	{
		if ($s->isEmpty() == true)
		{
			return;
		}
		$data = $s->peek();
		echo " ". $data;
		$s->pop();
		$this->printData($s);
		$s->push($data);
	}
	// Handle request to print stack elements
	public	function printStack($s1, $s2)
	{
		echo "\n Stack 1 \n";
		$this->printData($s1);
		echo "\n Stack 2 \n";
		$this->printData($s2);
	}
}

function main()
{
	// Create two empty stack
	$s1 = new MyStack();
	$s2 = new MyStack();
	$task = new Compares();
	// First stack
	$s1->push(1);
	$s1->push(2);
	$s1->push(3);
	// Second stack
	$s2->push(1);
	$s2->push(2);
	$s2->push(3);
	$task->printStack($s1, $s2);
	if ($task->compareStack($s1, $s2) == true)
	{
		echo "\n Stack are equal\n";
	}
	else
	{
		echo "\n Stack are not equal\n";
	}
	$s1->push(4);
	$s2->push(5);
	$task->printStack($s1, $s2);
	if ($task->compareStack($s1, $s2) == true)
	{
		echo "\n Stack are equal\n";
	}
	else
	{
		echo "\n Stack are not equal\n";
	}
}
main();

Output

 Stack 1
 3 2 1
 Stack 2
 3 2 1
 Stack are equal

 Stack 1
 4 3 1
 Stack 2
 5 1 1
 Stack are not equal
/*
   Node Js Program for
   Check if two stacks are equal
*/
// Define stack node
class StackNode
{
	constructor(element, top)
	{
		this.element = element;
		this.next = top;
	}
}
// Define a custom stack
class MyStack
{
	constructor()
	{
		//Set node values
		this.top = null;
		this.size = 0;
	}
	// Add node at the top of stack
	push(element)
	{
		this.top = new StackNode(element, this.top);
		this.size++;
	}
	isEmpty()
	{
		if (this.size > 0 && this.top != null)
		{
			return false;
		}
		else
		{
			return true;
		}
	}
	// Remove top element of stack
	pop()
	{
		if (this.size > 0 && this.top != null)
		{
			var temp = this.top;
			// Change top element of stack
			this.top = temp.next;
			// remove previous top
			temp = null;
			this.size--;
		}
	}
	// return top element of stack
	peek()
	{
		if (this.top == null)
		{
			return -1;
		}
		return this.top.element;
	}
	getSize()
	{
		return this.size;
	}
}
class Compares
{
	// Determine that given stacks are equal or not
	compareStack(s1, s2)
	{
		if (s1.getSize() != s2.getSize())
		{
			// When number of elements are not same
			return false;
		}
		// This is backup stack
		var b1 = new MyStack();
		var b2 = new MyStack();
		var status = true;
		// When both stack contains elements
		// And status are active
		while (s1.isEmpty() == false && s2.isEmpty() == false && status == true)
		{
			if (s1.peek() != s2.peek())
			{
				// When data elements are not same
				status = false;
			}
			else
			{
				// Backup the actual elements
				b1.push(s1.peek());
				b2.push(s2.peek());
				// Remove top element of stack
				s1.pop();
				s2.pop();
			}
		}
		// Puts the all pop element into actual stack
		while (b1.isEmpty() == false)
		{
			s1.push(b1.peek());
			s2.push(b2.peek());
			b1.pop();
			b1.pop();
		}
		return status;
	}
	// Print stack element
	printData(s)
	{
		if (s.isEmpty() == true)
		{
			return;
		}
		var data = s.peek();
		process.stdout.write(" " + data);
		s.pop();
		this.printData(s);
		s.push(data);
	}
	// Handle request to print stack elements
	printStack(s1, s2)
	{
		process.stdout.write("\n Stack 1 \n");
		this.printData(s1);
		process.stdout.write("\n Stack 2 \n");
		this.printData(s2);
	}
}

function main()
{
	// Create two empty stack
	var s1 = new MyStack();
	var s2 = new MyStack();
	var task = new Compares();
	// First stack
	s1.push(1);
	s1.push(2);
	s1.push(3);
	// Second stack
	s2.push(1);
	s2.push(2);
	s2.push(3);
	task.printStack(s1, s2);
	if (task.compareStack(s1, s2) == true)
	{
		process.stdout.write("\n Stack are equal\n");
	}
	else
	{
		process.stdout.write("\n Stack are not equal\n");
	}
	s1.push(4);
	s2.push(5);
	task.printStack(s1, s2);
	if (task.compareStack(s1, s2) == true)
	{
		process.stdout.write("\n Stack are equal\n");
	}
	else
	{
		process.stdout.write("\n Stack are not equal\n");
	}
}
main();

Output

 Stack 1
 3 2 1
 Stack 2
 3 2 1
 Stack are equal

 Stack 1
 4 3 1
 Stack 2
 5 1 1
 Stack are not equal
#    Python 3 Program for
#    Check if two stacks are equal

#  Define stack node
class StackNode :
	
	def __init__(self, element, top) :
		self.element = element
		self.next = top
	

#  Define a custom stack
class MyStack :
	
	def __init__(self) :
		# Set node values
		self.top = None
		self.size = 0
	
	#  Add node at the top of stack
	def push(self, element) :
		self.top = StackNode(element, self.top)
		self.size += 1
	
	def isEmpty(self) :
		if (self.size > 0 and self.top != None) :
			return False
		else :
			return True
		
	
	#  Remove top element of stack
	def pop(self) :
		if (self.size > 0 and self.top != None) :
			temp = self.top
			#  Change top element of stack
			self.top = temp.next
			#  remove previous top
			temp = None
			self.size -= 1
		
	
	#  return top element of stack
	def peek(self) :
		if (self.top == None) :
			return -1
		
		return self.top.element
	
	def getSize(self) :
		return self.size
	

class Compares :
	#  Determine that given stacks are equal or not
	def compareStack(self, s1, s2) :
		if (s1.getSize() != s2.getSize()) :
			#  When number of elements are not same
			return False
		
		#  This is backup stack
		b1 = MyStack()
		b2 = MyStack()
		status = True
		#  When both stack contains elements 
		#  And status are active
		while (s1.isEmpty() == False and s2.isEmpty() == False and status == True) :
			if (s1.peek() != s2.peek()) :
				#  When data elements are not same
				status = False
			else :
				#  Backup the actual elements
				b1.push(s1.peek())
				b2.push(s2.peek())
				#  Remove top element of stack
				s1.pop()
				s2.pop()
			
		
		#  Puts the all pop element into actual stack
		while (b1.isEmpty() == False) :
			s1.push(b1.peek())
			s2.push(b2.peek())
			b1.pop()
			b1.pop()
		
		return status
	
	#  Print stack element 
	def printData(self, s) :
		if (s.isEmpty() == True) :
			return
		
		data = s.peek()
		print(" ", data, end = "")
		s.pop()
		self.printData(s)
		s.push(data)
	
	#  Handle request to print stack elements
	def printStack(self, s1, s2) :
		print("\n Stack 1 ")
		self.printData(s1)
		print("\n Stack 2 ")
		self.printData(s2)
	

def main() :
	#  Create two empty stack
	s1 = MyStack()
	s2 = MyStack()
	task = Compares()
	#  First stack
	s1.push(1)
	s1.push(2)
	s1.push(3)
	#  Second stack
	s2.push(1)
	s2.push(2)
	s2.push(3)
	task.printStack(s1, s2)
	if (task.compareStack(s1, s2) == True) :
		print("\n Stack are equal")
	else :
		print("\n Stack are not equal")
	
	s1.push(4)
	s2.push(5)
	task.printStack(s1, s2)
	if (task.compareStack(s1, s2) == True) :
		print("\n Stack are equal")
	else :
		print("\n Stack are not equal")
	

if __name__ == "__main__": main()

Output

 Stack 1
  3  2  1
 Stack 2
  3  2  1
 Stack are equal

 Stack 1
  4  3  1
 Stack 2
  5  1  1
 Stack are not equal
#    Ruby Program for
#    Check if two stacks are equal

#  Define stack node
class StackNode  
	# Define the accessor and reader of class StackNode  
	attr_reader :element, :next
	attr_accessor :element, :next
 
	
	def initialize(element, top) 
		self.element = element
		self.next = top
	end

end

#  Define a custom stack
class MyStack  
	# Define the accessor and reader of class MyStack  
	attr_reader :top, :size
	attr_accessor :top, :size
 
	
	def initialize() 
		# Set node values
		self.top = nil
		self.size = 0
	end

	#  Add node at the top of stack
	def push(element) 
		self.top = StackNode.new(element, self.top)
		self.size += 1
	end

	def isEmpty() 
		if (self.size > 0 && self.top != nil) 
			return false
		else 
			return true
		end

	end

	#  Remove top element of stack
	def pop() 
		if (self.size > 0 && self.top != nil) 
			temp = self.top
			#  Change top element of stack
			self.top = temp.next
			#  remove previous top
			temp = nil
			self.size -= 1
		end

	end

	#  return top element of stack
	def peek() 
		if (self.top == nil) 
			return -1
		end

		return self.top.element
	end

	def getSize() 
		return self.size
	end

end

class Compares 
	#  Determine that given stacks are equal or not
	def compareStack(s1, s2) 
		if (s1.getSize() != s2.getSize()) 
			#  When number of elements are not same
			return false
		end

		#  This is backup stack
		b1 = MyStack.new()
		b2 = MyStack.new()
		status = true
		#  When both stack contains elements 
		#  And status are active
		while (s1.isEmpty() == false && s2.isEmpty() == false && status == true) 
			if (s1.peek() != s2.peek()) 
				#  When data elements are not same
				status = false
			else 
				#  Backup the actual elements
				b1.push(s1.peek())
				b2.push(s2.peek())
				#  Remove top element of stack
				s1.pop()
				s2.pop()
			end

		end

		#  Puts the all pop element into actual stack
		while (b1.isEmpty() == false) 
			s1.push(b1.peek())
			s2.push(b2.peek())
			b1.pop()
			b1.pop()
		end

		return status
	end

	#  Print stack element 
	def printData(s) 
		if (s.isEmpty() == true) 
			return
		end

		data = s.peek()
		print(" ", data)
		s.pop()
		self.printData(s)
		s.push(data)
	end

	#  Handle request to print stack elements
	def printStack(s1, s2) 
		print("\n Stack 1 \n")
		self.printData(s1)
		print("\n Stack 2 \n")
		self.printData(s2)
	end

end

def main() 
	#  Create two empty stack
	s1 = MyStack.new()
	s2 = MyStack.new()
	task = Compares.new()
	#  First stack
	s1.push(1)
	s1.push(2)
	s1.push(3)
	#  Second stack
	s2.push(1)
	s2.push(2)
	s2.push(3)
	task.printStack(s1, s2)
	if (task.compareStack(s1, s2) == true) 
		print("\n Stack are equal\n")
	else 
		print("\n Stack are not equal\n")
	end

	s1.push(4)
	s2.push(5)
	task.printStack(s1, s2)
	if (task.compareStack(s1, s2) == true) 
		print("\n Stack are equal\n")
	else 
		print("\n Stack are not equal\n")
	end

end

main()

Output

 Stack 1 
 3 2 1
 Stack 2 
 3 2 1
 Stack are equal

 Stack 1 
 4 3 1
 Stack 2 
 5 1 1
 Stack are not equal
/*
   Scala Program for
   Check if two stacks are equal
*/
// Define stack node
class StackNode(var element: Int , var next: StackNode);
// Define a custom stack
class MyStack(var top: StackNode , var size: Int)
{
	def this()
	{
		this(null, 0);
	}
	// Add node at the top of stack
	def push(element: Int): Unit = {
		this.top = new StackNode(element, this.top);
		this.size += 1;
	}
	def isEmpty(): Boolean = {
		if (this.size > 0 && this.top != null)
		{
			return false;
		}
		else
		{
			return true;
		}
	}
	// Remove top element of stack
	def pop(): Unit = {
		if (this.size > 0 && this.top != null)
		{
			var temp: StackNode = this.top;
			// Change top element of stack
			this.top = temp.next;
			// remove previous top
			temp = null;
			this.size -= 1;
		}
	}
	// return top element of stack
	def peek(): Int = {
		if (this.top == null)
		{
			return -1;
		}
		return this.top.element;
	}
	def getSize(): Int = {
		return this.size;
	}
}
class Compares
{
	// Determine that given stacks are equal or not
	def compareStack(s1: MyStack, s2: MyStack): Boolean = {
		if (s1.getSize() != s2.getSize())
		{
			// When number of elements are not same
			return false;
		}
		// This is backup stack
		var b1: MyStack = new MyStack();
		var b2: MyStack = new MyStack();
		var status: Boolean = true;
		// When both stack contains elements
		// And status are active
		while (s1.isEmpty() == false && s2.isEmpty() == false && status == true)
		{
			if (s1.peek() != s2.peek())
			{
				// When data elements are not same
				status = false;
			}
			else
			{
				// Backup the actual elements
				b1.push(s1.peek());
				b2.push(s2.peek());
				// Remove top element of stack
				s1.pop();
				s2.pop();
			}
		}
		// Puts the all pop element into actual stack
		while (b1.isEmpty() == false)
		{
			s1.push(b1.peek());
			s2.push(b2.peek());
			b1.pop();
			b1.pop();
		}
		return status;
	}
	// Print stack element
	def printData(s: MyStack): Unit = {
		if (s.isEmpty() == true)
		{
			return;
		}
		var data: Int = s.peek();
		print(" " + data);
		s.pop();
		this.printData(s);
		s.push(data);
	}
	// Handle request to print stack elements
	def printStack(s1: MyStack, s2: MyStack): Unit = {
		print("\n Stack 1 \n");
		this.printData(s1);
		print("\n Stack 2 \n");
		this.printData(s2);
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		// Create two empty stack
		var s1: MyStack = new MyStack();
		var s2: MyStack = new MyStack();
		var task: Compares = new Compares();
		// First stack
		s1.push(1);
		s1.push(2);
		s1.push(3);
		// Second stack
		s2.push(1);
		s2.push(2);
		s2.push(3);
		task.printStack(s1, s2);
		if (task.compareStack(s1, s2) == true)
		{
			print("\n Stack are equal\n");
		}
		else
		{
			print("\n Stack are not equal\n");
		}
		s1.push(4);
		s2.push(5);
		task.printStack(s1, s2);
		if (task.compareStack(s1, s2) == true)
		{
			print("\n Stack are equal\n");
		}
		else
		{
			print("\n Stack are not equal\n");
		}
	}
}

Output

 Stack 1
 3 2 1
 Stack 2
 3 2 1
 Stack are equal

 Stack 1
 4 3 1
 Stack 2
 5 1 1
 Stack are not equal
/*
   Swift 4 Program for
   Check if two stacks are equal
*/
// Define stack node
class StackNode
{
	var element: Int;
	var next: StackNode? ;
	init(_ element: Int, _ top: StackNode? )
	{
		self.element = element;
		self.next = top;
	}
}
// Define a custom stack
class MyStack
{
	var top: StackNode? ;
	var size: Int;
	init()
	{
		//Set node values
		self.top = nil;
		self.size = 0;
	}
	// Add node at the top of stack
	func push(_ element: Int)
	{
		self.top = StackNode(element, self.top);
		self.size += 1;
	}
	func isEmpty()->Bool
	{
		if (self.size > 0 && self.top  != nil)
		{
			return false;
		}
		else
		{
			return true;
		}
	}
	// Remove top element of stack
	func pop()
	{
		if (self.size > 0 && self.top  != nil)
		{
			var temp: StackNode? = self.top;
			// Change top element of stack
			self.top = temp!.next;
			// remove previous top
			temp = nil;
			self.size -= 1;
		}
	}
	// return top element of stack
	func peek()->Int
	{
		if (self.top == nil)
		{
			return -1;
		}
		return self.top!.element;
	}
	func getSize()->Int
	{
		return self.size;
	}
}
class Compares
{
	// Determine that given stacks are equal or not
	func compareStack(_ s1: MyStack, _ s2: MyStack)->Bool
	{
		if (s1.getSize()  != s2.getSize())
		{
			// When number of elements are not same
			return false;
		}
		// This is backup stack
		let b1: MyStack = MyStack();
		let b2: MyStack = MyStack();
		var status: Bool = true;
		// When both stack contains elements
		// And status are active
		while (s1.isEmpty() == false && s2.isEmpty() == false && status == true)
		{
			if (s1.peek()  != s2.peek())
			{
				// When data elements are not same
				status = false;
			}
			else
			{
				// Backup the actual elements
				b1.push(s1.peek());
				b2.push(s2.peek());
				// Remove top element of stack
				s1.pop();
				s2.pop();
			}
		}
		// Puts the all pop element into actual stack
		while (b1.isEmpty() == false)
		{
			s1.push(b1.peek());
			s2.push(b2.peek());
			b1.pop();
			b1.pop();
		}
		return status;
	}
	// Print stack element
	func printData(_ s: MyStack)
	{
		if (s.isEmpty() == true)
		{
			return;
		}
		let data: Int = s.peek();
		print(" ", data, terminator: "");
		s.pop();
		self.printData(s);
		s.push(data);
	}
	// Handle request to print stack elements
	func printStack(_ s1: MyStack , _ s2 : MyStack )
	{
		print("\n Stack 1 ");
		self.printData(s1);
		print("\n Stack 2 ");
		self.printData(s2);
	}
}
func main()
{
	// Create two empty stack
	let s1: MyStack = MyStack();
	let s2: MyStack = MyStack();
	let task: Compares = Compares();
	// First stack
	s1.push(1);
	s1.push(2);
	s1.push(3);
	// Second stack
	s2.push(1);
	s2.push(2);
	s2.push(3);
	task.printStack(s1, s2);
	if (task.compareStack(s1, s2) == true)
	{
		print("\n Stack are equal");
	}
	else
	{
		print("\n Stack are not equal");
	}
	s1.push(4);
	s2.push(5);
	task.printStack(s1, s2);
	if (task.compareStack(s1, s2) == true)
	{
		print("\n Stack are equal");
	}
	else
	{
		print("\n Stack are not equal");
	}
}
main();

Output

 Stack 1
  3  2  1
 Stack 2
  3  2  1
 Stack are equal

 Stack 1
  4  3  1
 Stack 2
  5  1  1
 Stack are not equal
/*
   Kotlin Program for
   Check if two stacks are equal
*/
// Define stack node
class StackNode
{
	var element: Int;
	var next: StackNode ? ;
	constructor(element: Int, top: StackNode ? )
	{
		this.element = element;
		this.next = top;
	}
}
// Define a custom stack
class MyStack
{
	var top: StackNode ? ;
	var size: Int;
	constructor()
	{
		//Set node values
		this.top = null;
		this.size = 0;
	}
	// Add node at the top of stack
	fun push(element: Int): Unit
	{
		this.top = StackNode(element, this.top);
		this.size += 1;
	}
	fun isEmpty(): Boolean
	{
		if (this.size > 0 && this.top != null)
		{
			return false;
		}
		else
		{
			return true;
		}
	}
	// Remove top element of stack
	fun pop(): Unit
	{
		if (this.size > 0 && this.top != null)
		{
			var temp: StackNode ? = this.top;
			// Change top element of stack
			this.top = temp?.next;

			this.size -= 1;
		}
	}
	// return top element of stack
	fun peek(): Int
	{
		if (this.top == null)
		{
			return -1;
		}
		return this.top!!.element;
	}
	fun size(): Int
	{
		return this.size;
	}
}
class Compares
{
	// Determine that given stacks are equal or not
	fun compareStack(s1: MyStack , s2 : MyStack): Boolean
	{
		if (s1.size() != s2.size())
		{
			// When number of elements are not same
			return false;
		}
		// This is backup stack
		var b1: MyStack = MyStack();
		var b2: MyStack = MyStack();
		var status: Boolean = true;
		// When both stack contains elements
		// And status are active
		while (s1.isEmpty() == false && s2.isEmpty() == false && status == true)
		{
			if (s1.peek() != s2.peek())
			{
				// When data elements are not same
				status = false;
			}
			else
			{
				// Backup the actual elements
				b1.push(s1.peek());
				b2.push(s2.peek());
				// Remove top element of stack
				s1.pop();
				s2.pop();
			}
		}
		// Puts the all pop element into actual stack
		while (b1.isEmpty() == false)
		{
			s1.push(b1.peek());
			s2.push(b2.peek());
			b1.pop();
			b1.pop();
		}
		return status;
	}
	// Print stack element
	fun printData(s: MyStack): Unit
	{
		if (s.isEmpty() == true)
		{
			return;
		}
		var data: Int = s.peek();
		print(" " + data);
		s.pop();
		this.printData(s);
		s.push(data);
	}
	// Handle request to print stack elements
	fun printStack(s1: MyStack , s2 : MyStack): Unit
	{
		print("\n Stack 1 \n");
		this.printData(s1);
		print("\n Stack 2 \n");
		this.printData(s2);
	}
}
fun main(args: Array < String > ): Unit
{
	// Create two empty stack
	var s1: MyStack = MyStack();
	var s2: MyStack = MyStack();
	var task: Compares = Compares();
	// First stack
	s1.push(1);
	s1.push(2);
	s1.push(3);
	// Second stack
	s2.push(1);
	s2.push(2);
	s2.push(3);
	task.printStack(s1, s2);
	if (task.compareStack(s1, s2) == true)
	{
		print("\n Stack are equal\n");
	}
	else
	{
		print("\n Stack are not equal\n");
	}
	s1.push(4);
	s2.push(5);
	task.printStack(s1, s2);
	if (task.compareStack(s1, s2) == true)
	{
		print("\n Stack are equal\n");
	}
	else
	{
		print("\n Stack are not equal\n");
	}
}

Output

 Stack 1
 3 2 1
 Stack 2
 3 2 1
 Stack are equal

 Stack 1
 4 3 1
 Stack 2
 5 1 1
 Stack are not equal


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