Wentworth Institute of Technology
Division of Professional and Continuing Studies
COMP385 Section 71 - Data Structures II - Fall, 2007
Homework 6 – Blackjack Probabilities
Instructor: Bob Goldstein (617) 912-2512
bobg@vision.eri.harvard.edu
robert.goldstein@schepens.harvard.edu
http://home.comcast.net/~goldsteinr/Courses/index.html
http://goldstein.eri.harvard.edu/courses/index.html
http://myweb.wit.edu/goldsteinr/Courses/index.html
Due Date: October 23, 2007
Hand In: Printout of program code and dialogue of how it runs.
Purpose:
Build a simulation by working with stacks.
Description:
Use the classes “PlayingCard” and “CardDeck” to build 1 million blackjack hands to calculate the probability of
getting a “natural 21”. According to www.blackjacktactics.com The mathematically calculated probability is
4.8%
For each blackjack hand, start with a freshly shuffled deck. Then pop the top 2 cards off the deck to get one
blackjack hand. .
A “natural 21” is an ace together with a 10 or any face card (Jack, Queen, King).
In 1 million deals, you should get about 48,000 natural 21s.
Extra Credit:
1. Determine the probability of getting a 17-20. According to www.blackjacktactics.com this probability is
30%. In this case an ace would be counted as an “11”.
Extra, Extra Credit
2. Simulate a simple blackjack game where the user plays against the computer, and there is no third card.
The two players only get 2 cards each.
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