using System;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        int[] twoPair = new int[] {1, 1, 2, 2, 3};

        int[] pullay = new int[] {1, 1, 1, 2, 3};

        int[] fullHouse = new int[] {1, 1, 2, 2, 2};

        int[] pair = new int[] {1, 1, 2, 4, 3};

        int[] anotherTwoPair = new int[] {10, 10, 5, 4, 5};

        int[] straight = new int[] {4, 5, 6, 7, 8};

        int[][] combinations = new int[][] {twoPair, pullay, fullHouse, pair, anotherTwoPair, straight};

        int trueCounter = 0;

        int falseCounter = 0;

        foreach(int[] hand in combinations)

        {

            if (TwoPairs(hand)) {

                trueCounter++;

                Console.WriteLine("True");

            } else {

                falseCounter++;

                Console.WriteLine("False");

            }

        }

        Console.WriteLine(String.Format("Out of {0} in total, {1} passed and {2} failed", combinations.Length, trueCounter, falseCounter));

    }

    static bool TwoPairs(int[] hand)

    {

        if (hand.Distinct().ToArray().Length == 3 && hand.Length == 5)

        {

            foreach (int card in hand.Distinct())

            {

                var result = hand.Count(x => x == card);

                if (result > 2)

                {

                    return false;

                } 

            }

        } else {

            return false;

        }

        return true;

    }

}