using System;

using System.Collections.Generic;

using EzPasswordValidator.Validators;

using EzPasswordValidator.Checks;

​

public class Program

{

    public static void Main()

    {

        var list = new List<int>

        {

            0,

            3,

            6,

            9,

            0

        };

        Console.WriteLine(hasSubsequences(list.ToArray()));

    }

​

    private static bool hasSubsequences(int[] vals)

    {

        var passwordValidator = new PasswordValidator(CheckTypes.DigitRepetition)

        {

            DigitRepetitionLength = 2

        };

        List<int> differences = new List<int>();

        for (int i = 0; i < vals.Length - 1; i++)

        {

            differences.Add(findDifference(vals[i + 1], vals[i]));

        }

        return !passwordValidator.Validate(string.Join<int>(",", differences));

    }

​

    private static int findDifference(int nr1, int nr2)

    {

        return nr1 - nr2;

    }

}