Shuffler example

shuffler.cs

using System.Linq;
using System.Collections.Generic;
using System;

public class UniqueRandom {
    private HashSet<int> intSet = new HashSet<int>();
    private Random rng;

    public UniqueRandom(Random rng) {
        this.rng = rng;
    }

    public int Next() {
        int next;
        do {
            next = rng.Next();
        } while(intSet.Contains(next));

        intSet.Add(next);

        return next;
    }
}


public static class Shuffler {
    public static IEnumerable<T> Shuffle<T>(this IEnumerable<T> enumerable,
                                            Random rng) {
        var urng = new UniqueRandom(rng);
        return enumerable.OrderBy(a => urng.Next());
    }
}

public class ShuffleDeck {
    public static void Main(string[] args) {
        var rng = new Random();
        Console.WriteLine(String.Join("\n", deck.Shuffle(rng)));
    }

    // MagicFest Chiba – Winner deck
    // https://www.channelfireball.com/magicfest-chiba-top-8-deck-lists/
    public static String[] deck = {
        // Creatures
        "Brineborn Cutthroat",
        "Brineborn Cutthroat",
        "Metropolis Sprite",
        "Ferocious Pup",
        "Ferocious Pup",
        "Netcaster Spider",
        "Netcaster Spider",
        "Scuttlemutt",
        "Tomebound Lich",
        "Octoprophet",
        "Thicket Crasher",
        "Agent of Treachery",
        "Meteor Golem",

        // Planeswalkers
        "Vivien, Arkbow Ranger",

        // Spells
        "Anticipate",
        "Rabid Bite",
        "Rabid Bite",
        "Gift of Paradise",
        "Pulse of Murasa",
        "Winged Words",
        "Wolfrider’s Saddle",
        "Sleep Paralysis",
        "Moldervine Reclamation",

        // Lands
        "Island",
        "Island",
        "Island",
        "Island",
        "Island",
        "Island",
        "Island",
        "Island",
        "Forest",
        "Forest",
        "Forest",
        "Forest",
        "Forest",
        "Forest",
        "Swamp",
        "Jungle Hollow",
        "Jungle Hollow"
    };
}