Stack.Equals() Method in C#

The Stack.Equals() method in C# is used to check whether a Stack class object is equal to another object or not.

Syntax

The syntax is as follows −

public virtual bool Equals (object ob);

Above, the parameter ob is the object compared with another.

Example

Let us now see an example −

 Live Demo

using System;
using System.Collections;
public class Demo {
   public static void Main(){
      Stack stack = new Stack();
      stack.Push(150);
      stack.Push(300);
      stack.Push(500);
      stack.Push(750);
      stack.Push(1000);
      stack.Push(1250);
      stack.Push(1500);
      stack.Push(2000);
      stack.Push(2500);
      Console.WriteLine("Stack elements...");
      foreach(int val in stack){
         Console.WriteLine(val);
      }
      Console.WriteLine("Count of elements = "+stack.Count);
      stack.Push(3000);
      stack.Push(3500);
      stack.Push(4000);
      Console.WriteLine("
Stack elements...updated");
      foreach(int val in stack){
         Console.WriteLine(val);
      }
      Console.WriteLine("
Count of elements (updated) = "+stack.Count);
      Stack stack2 = (Stack)stack.Clone();
      Console.WriteLine("
Stack elements...cloned");
      foreach(int val in stack2){
         Console.WriteLine(val);
      }
      Console.Write("Count of elements in cloned stack (updated) = "+stack2.Count);
      Console.WriteLine("
Are both the stacks equal? = "+stack.Equals(stack2));
   }
}

Output

This will produce the following output −

Stack elements...
2500
2000
1500
1250
1000
750
500
300
150
Count of elements = 9
Stack elements...updated
4000
3500
3000
2500
2000
1500
1250
1000
750
500
300
150
Count of elements (updated) = 12
Stack elements...cloned
4000
3500
3000
2500
2000
1500
1250
1000
750
500
300
150
Count of elements in cloned stack (updated) = 12
Are both the stacks equal? = False

Example

Let us now see another example −

 Live Demo

using System;
using System.Collections;
public class Demo {
   public static void Main(){
      Stack stack1 = new Stack();
      stack1.Push(150);
      stack1.Push(300);
      stack1.Push(500);
      stack1.Push(750);
      stack1.Push(1000);
      Console.WriteLine("Stack1 elements...");
      foreach(int val in stack1){
         Console.WriteLine(val);
      }
      Stack stack2 = new Stack();
      stack2.Push(350);
      stack2.Push(400);
      stack2.Push(500);
      stack2.Push(850);
      stack2.Push(900);
      Console.WriteLine("Stack2 elements...");
      foreach(int val in stack2){
         Console.WriteLine(val);
      }
      Console.WriteLine("
Are both the stacks equal? = "+stack1.Equals(stack2));
   }
}

Output

This will produce the following output −

Stack1 elements...
1000
750
500
300
150
Stack2 elements...
900
850
500
400
350
Are both the stacks equal? = False