public/subjects/card_deck/README.md

card_deck

Instructions

A standard deck of cards has 52 cards: 4 suits with 13 cards per suit. Represent the cards from a deck:

• Create an enum to represent the Suit.
• Implement the associated function random, which returns a random Suit (Heart, Diamond, Spade or Club).
• Create a Rank enum. For ace and face cards, it can be one of Ace, King, Queen or Jack. For the values from 2 to 10, it can have a Number value associated to a u8.
• Create an associated function to Rank called Random that returns a random Rank.
• Create a structure name Card which has the fields suit and rank.

Define:

• The associated function translate for Rank and Suit:
  • For Suit, translate converts an integer value (u8) to a suit (1 -> Heart, 2 -> Diamonds, 3 -> Spade, 4 -> Club).
  • For Rank, translate converts an integer value (u8) to a rank ( 1 -> Ace, 2 -> 2, .., 10 -> 10, 11 -> Jack, 12 -> Queen, 13 -> King).
• The associated function random for Rank and Suit returns a random Rank and Suit respectively.
• Finally define the function winner_card which returns true if the card passed as an argument is an ace of spades.

Dependencies

rand = "0.3.14"

Expected Functions and Structures

pub enum Suit {
}

pub enum Rank {
}

impl Suit {
	pub fn random() -> Suit {
	}

	pub fn translate(value: u8) -> Suit {
	}
}

impl Rank {
	pub fn random() -> Rank {
	}

	pub fn translate(value: u8) -> Rank {
	}
}

pub struct Card {
	pub suit: Suit,
	pub rank: Rank,
}

pub fn winner_card(card: &Card) -> bool {
}

Usage

Here is a program to test your function

fn main() {
	let your_card = Card {
		rank: Rank::random(),
		suit: Suit::random(),
	};

	println!("Your card is {:?}", your_card);

	// Now if the card is an Ace of Spades print "You are the winner"
	if card_deck::winner_card(&your_card) {
		println!("You are the winner!");
	}
}

And its output

$ cargo run
Your card is Card { suit: Club, rank: Ace }
$

Notions

• Crate rand
• Enums