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blackjack.rb
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blackjack.rb
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#Problem: https://exercism.org/tracks/ruby/exercises/blackjack
#Solution
module Blackjack
def self.parse_card(card)
case card
when "ace"
11
when "two"
2
when "three"
3
when "four"
4
when "five"
5
when "six"
6
when "seven"
7
when "eight"
8
when "nine"
9
when "ten","jack","queen","king"
10
else
0
end
end
def self.card_range(card1, card2)
case parse_card(card1)+parse_card(card2)
when 4..11
"low"
when 12..16
"mid"
when 17..20
"high"
when 21
"blackjack"
else
"two aces"
end
end
def self.first_turn(card1, card2, dealer_card)
case card_range(card1, card2)
when "two aces"
"P"
when "blackjack"
[10,11].include?(parse_card(dealer_card)) ? "S" : "W"
when "high"
"S"
when "mid"
parse_card(dealer_card) >=7 ? "H" : "S"
when "low"
"H"
end
end
end