#
# 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:
# - Arrays for ranks, suits, and the deck
# - 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
#
def build_deck
ranks = %w[2 3 4 5 6 7 8 9 10 J Q K A]
suits = %w[Clubs Diamonds Hearts Spades]
deck = []
suits.each do |suit|
ranks.each do |rank|
deck << "#{rank} of #{suit}"
end
end
deck
end
def draw_five(deck, draw_number)
# Shuffle the remaining deck before this draw
deck.shuffle!
puts "Draw ##{draw_number}:"
deck.first(5).each do |card|
puts " #{card}"
end
puts
# Remove drawn cards
deck.shift(5)
end
def main
# Number of draws
number_of_draws = 3
deck = build_deck
# Perform multiple draws (no duplicates)
(1..number_of_draws).each do |draw_index|
if deck.length < 5
puts "Not enough cards left for draw ##{draw_index}."
break
end
draw_five(deck, draw_index)
end
end
main
#
# run:
#
# Draw #1:
# J of Hearts
# J of Diamonds
# 6 of Clubs
# 8 of Hearts
# 4 of Clubs
#
# Draw #2:
# 2 of Hearts
# 7 of Diamonds
# 3 of Spades
# Q of Clubs
# 4 of Hearts
#
# Draw #3:
# 9 of Hearts
# 4 of Diamonds
# 7 of Clubs
# A of Diamonds
# A of Clubs
#
