How Can I Implement the Fisher-Yates Shuffle Algorithm to Shuffle a Deck of Cards in C#?

Card Shuffling in C# using Fisher-Yates Algorithm

In this programming endeavor, we aim to shuffle a deck of cards as many times as desired by the user. This involves creating a method that utilizes the System.Random class to generate random integers and implementing the Fisher-Yates shuffle algorithm.

Existing Program Structure:

Your provided code consists of several classes including Program.cs, Deck.cs, Enums.cs, and Card.cs. These classes define the structure of your card game.

Card Shuffling Algorithm:

To implement a well-known shuffling algorithm known as the Fisher-Yates shuffle, we will add a new static class called FisherYates. This class contains the following method:

static public void Shuffle(int[] deck)
{
    for (int n = deck.Length - 1; n > 0; --n)
    {
        int k = r.Next(n+1);
        int temp = deck[n];
        deck[n] = deck[k];
        deck[k] = temp;
    }
}

In this method, we generate a random index k within the range of 0 to n and swap the elements at indices n and k. This process is repeated for each element in the deck, effectively shuffling the elements.

Integration into Your Code:

To integrate the shuffle method into your code, you can use the following steps:

1. In Program.cs, add the following lines to the end of the Main method:

int[] deck_ints = new int[52];
for (int i = 0; i < deck_ints.Length; i++)
{
    deck_ints[i] = i;
}

int num_shuffles = int.Parse(Console.ReadLine());

• This reads the number of shuffles from the user and initializes the deck as an array of integers.

2. In Deck.cs, add the following line to the ShuffleCards method:

FisherYates.Shuffle(deck_ints);

• This shuffles the deck using the Fisher-Yates algorithm.

By following these steps, you can effectively shuffle a deck of cards as many times as specified and display the shuffled deck as desired.

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