/*
A standard deck of 52 playing cards consists of four suits:
spades (♠), hearts (♥), diamonds (♦), and clubs (♣).
Each suit contains 13 ranks:
Ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, Jack, Queen, King.
Cards of spades and clubs are black, while hearts and diamonds are red.
Color is informational only — it does not affect shuffling or random selection.
*/
/*
This program performs multiple draws of 5 random cards from a 52‑card deck
WITHOUT duplicates across draws.
It uses:
- List<String> for the deck
- Kotlin's built‑in shuffle() for efficient randomization (Fisher–Yates internally)
- Functions for clean structure
Algorithm:
1. Build a full deck (52 cards)
2. For each draw:
a. Shuffle the remaining deck
b. Draw 5 cards
c. Remove them from the deck
*/
fun buildDeck(): MutableList<String> {
val ranks = listOf("2","3","4","5","6","7","8","9","10","J","Q","K","A")
val suits = listOf("Clubs", "Diamonds", "Hearts", "Spades")
val deck = mutableListOf<String>()
for (suit in suits) {
for (rank in ranks) {
deck.add("$rank of $suit")
}
}
return deck
}
fun drawFive(deck: MutableList<String>, drawNumber: Int) {
// Shuffle the remaining deck before this draw
deck.shuffle()
println("Draw #$drawNumber:")
deck.take(5).forEach { println(" $it") }
println()
// Remove drawn cards
repeat(5) { deck.removeAt(0) }
}
fun main() {
// Number of draws
val numberOfDraws = 3
val deck = buildDeck()
// Perform multiple draws (no duplicates)
for (drawIndex in 1..numberOfDraws) {
if (deck.size < 5) {
println("Not enough cards left for draw #$drawIndex.")
break
}
drawFive(deck, drawIndex)
}
}
/*
run:
Draw #1:
J of Clubs
9 of Hearts
K of Hearts
8 of Clubs
6 of Diamonds
Draw #2:
2 of Spades
8 of Hearts
2 of Clubs
3 of Diamonds
6 of Spades
Draw #3:
4 of Spades
J of Spades
K of Clubs
4 of Diamonds
Q of Diamonds
*/
