simulate a poker table happening chance.

pokersim.rb

require 'ruby-poker'

TOTAL_TIMES = 1000000

FACES = "AKQJT98765432"
SUITS = "CDSH"

srand

# build a deck.
deck = []
FACES.each_byte do |f|
  SUITS.each_byte do |s|
    deck.push(f.chr + s.chr)
  end
end

#deal one hand.
def run_a_game deck
  #3.times{|i| deck.shuffle!}
  deck.shuffle!
  raw_hand = deck[0..4]
  hand = PokerHand.new(raw_hand)
  hand.rank
end

a={
"Highest Card"=>0,
"Pair"=>0,
"Two pair"=>0,
"Three of a kind"=>0,
"Straight"=>0,
"Flush"=>0,
"Full house"=>0,
"Four of a kind"=>0,
"Straight Flush"=>0,
"Royal Flush"=>0
}

TOTAL_TIMES.times do |i|
  res = run_a_game deck
  a[res]+=1
  if i%10000 == 0
      puts "### #{i} times has runned. ###"
    a.each_pair do |k,v|
      puts "#{k}, #{v}, #{v*100.0/i.to_f}%"
    end
  end
end