C# | Check if two LinkedList<T> objects are equal

Last Updated : 01 Feb, 2019

Equals(Object) Method which is inherited from the Object class is used to check if a specified LinkedList<T> object is equal to another LinkedList<T> object or not.

Syntax:

public virtual bool Equals (object obj);

Here, obj is the object which is to be compared with the current object.

Return Value: This method return true if the specified object is equal to the current object otherwise it returns false.

Below programs illustrate the use of above-discussed method:

Example 1:

// C# program to if a LinkedList object 
// is equal to another LinkedList object 
using System; 
using System.Collections.Generic; 
  
class Geeks { 
  
    // Main Method 
    public static void Main(String[] args) 
    { 
  
        // Creating a LinkedList of Strings 
        LinkedList<String> myList1 = new LinkedList<String>(); 
  
        // Adding nodes in LinkedList 
        myList1.AddLast("Geeks"); 
        myList1.AddLast("for"); 
        myList1.AddLast("Data Structures"); 
        myList1.AddLast("Noida"); 
  
        // Checking whether myList1 is 
        // equal to itself or not 
        Console.WriteLine(myList1.Equals(myList1)); 
    } 
} 

Output:

True

Example 2:

// C# program to if a LinkedList object 
// is equal to another LinkedList object 
using System; 
using System.Collections.Generic; 
  
class Geeks { 
  
    // Main Method 
    public static void Main(String[] args) 
    { 
  
        // Creating a LinkedList of Strings 
        LinkedList<String> myList1 = new LinkedList<String>(); 
  
        // Adding nodes in LinkedList 
        myList1.AddLast("C"); 
        myList1.AddLast("C++"); 
        myList1.AddLast("Java"); 
        myList1.AddLast("C#"); 
  
        // Creating a LinkedList of Integers 
        LinkedList<int> myList2 = new LinkedList<int>(); 
  
        // Adding nodes in LinkedList 
        myList2.AddLast(2); 
        myList2.AddLast(4); 
        myList2.AddLast(6); 
        myList2.AddLast(8); 
  
        // Checking whether myList1 is 
        // equal to myList2 or not 
        Console.WriteLine(myList1.Equals(myList2)); 
  
        // Creating a LinkedList of Integers 
        LinkedList<int> myList3 = new LinkedList<int>(); 
  
        // Assigning myList2 to myList3 
        myList3 = myList2; 
  
        // Checking whether myList3 is 
        // equal to myList2 or not 
        Console.WriteLine(myList3.Equals(myList2)); 
    } 
} 

Output:

False
True

Note: If the current instance is a reference type, the Equals(Object) method checks for reference equality.

Suggest improvement

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Early and late binding in C#

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C# | Check if two LinkedList<T> objects are equal

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