From: Denis Hennessy <denis@...>
Date: 2008-01-05T20:25:11+09:00
Subject: Re: [QUIZ] Studying Blackjack (#151)

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On 4 Jan 2008, at 22:31, James Gray wrote:

> On Jan 4, 2008, at 4:27 PM, Sharon Phillips wrote:
>
>>> Write a Ruby program that shows the percent chance of a dealer  
>>> reaching each
>>> possible outcome based on the upcard showing
>>
>> Are we able to post partial / full outcomes within the 48 hours?
>
> You bet.  Feel free.
>
> James Edward Gray II
>

Here's my results so far. I don't completely trust them yet since I'm  
not sure I understand the blackjack rules properly (I'm assuming the  
dealer has to use an ace as 11 unless they bust).

/dh

$ ./blackjack.rb
Odds for each dealer outcome based on initial upcard (2 deck game)
      17     18     19     20     21    BUST
  A  12.58% 12.82% 12.75% 12.85% 36.07% 12.93%
  2  13.93% 13.33% 13.07% 12.39% 11.92% 35.36%
  3  13.27% 13.06% 12.45% 12.18% 11.53% 37.50%
  4  13.07% 12.02% 12.10% 11.63% 11.31% 39.88%
  5  12.10% 12.28% 11.73% 10.90% 10.73% 42.25%
  6  16.62% 10.62% 10.67% 10.12%  9.75% 42.21%
  7  37.05% 13.82%  7.80%  7.88%  7.34% 26.11%
  8  12.97% 36.12% 12.90%  6.89%  6.96% 24.16%
  9  12.09% 11.20% 35.41% 12.11%  6.10% 23.09%
10  11.29% 11.22% 11.30% 33.56% 11.31% 21.32%
  J  11.29% 11.22% 11.30% 33.56% 11.31% 21.32%
  Q  11.29% 11.22% 11.30% 33.56% 11.31% 21.32%
  K  11.29% 11.22% 11.30% 33.56% 11.31% 21.32%



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