What is the purpose of SequenceEqual?

Posted by Niladri.Biswas on 6/9/2013 | Category: LINQ Interview questions | Views: 4517 | Points: 40

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Answer:

The SequenceEqual operator determines whether all elements in two collections are equal and in the same order.
e.g.

using System;

using System.Linq;



class Program

{

    static void Main()

    {

	string[] array1 = { "dot", "net", "perls" };

	string[] array2 = { "a", "different", "array" };

	string[] array3 = { "dot", "net", "perls" };

	string[] array4 = { "DOT", "NET", "PERLS" };



	bool a = array1.SequenceEqual(array2);

	bool b = array1.SequenceEqual(array3);

	bool c = array1.SequenceEqual(array4, StringComparer.OrdinalIgnoreCase);



	Console.WriteLine(a);

	Console.WriteLine(b);

	Console.WriteLine(c);

    }

}