```Here is my solution.

It also sorts the the cards by a score computed depending on the trump
suit, lower is better.

Dominik

The code:

class EuchreCard

SUIT_COLOR = {
:diamonds => :red,
:hearts => :red,
:clubs => :black,
}
SUIT_ORDER = [:diamonds, :clubs, :hearts, :spades]
RANK_ORDER = [:nine, :ten, :jack, :queen, :king, :ace]

def initialize(str)
str = str.to_s.downcase
@rank =
if str[0] == ?9
:nine
else
RANK_ORDER.find { |rank| rank.to_s[0] == str[0] }
end
@suit = SUIT_ORDER.find { |suit| suit.to_s[0] == str[1] }
raise "unknown card rank" unless rank
raise "unknown card suit" unless suit
end

def to_s
unless rank == :nine
rank.to_s[0, 1].upcase
else
"9"
end + suit.to_s[0, 1]
end

def sort_score(trump)
if rank == :jack && suit == trump
0
elsif rank == :jack && SUIT_COLOR[suit] == SUIT_COLOR[trump]
1
else
ti = SUIT_ORDER.index(trump)
raise "unknown trump suit: #{trump}" unless ti
suit_score = (SUIT_ORDER.index(suit) - ti) % 4
10 + suit_score * 10 - RANK_ORDER.index(rank)
end
end
end

if \$0 == __FILE__
trump = gets.strip.downcase.to_sym
unless EuchreCard::SUIT_COLOR.has_key? trump
warn "unknown trump suit: #{trump}"
exit 1
end
cards = readlines.map { |line| EuchreCard.new(line.strip) }
cards = cards.sort_by { |card| card.sort_score(trump) }
puts trump.to_s.capitalize, cards
end

```