Difference between revisions of "CISC181 S2017 Lab7"
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| + | <p style="font-size:40px">[http://nameless.cis.udel.edu/class_data/181_s2017/Lab7_Tests.java Lab #7 tests]</p> | ||
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==Preliminaries== | ==Preliminaries== | ||
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==Instructions== | ==Instructions== | ||
| − | Suppose you want to write a Poker game app based on the <tt>Card</tt> and <tt>Deck</tt> classes introduced earlier in the semester. Obviously, a core function would be to ''compare'' two hands and determine which one is better. | + | Suppose you want to write a Poker game app based on the <tt>Card</tt> and <tt>Deck</tt> classes introduced earlier in the semester (see [https://drive.google.com/open?id=1DnSnRiRXdtWQTfcNAKarvhHifePBbj_2RGuVC9pORBk lecture 11] for code). Obviously, a core function would be to ''compare'' two hands and determine which one is better. |
| − | In this lab you will write a <tt>Comparator</tt> class <tt>ByHandValue</tt> to compare hands in ''5-card draw'' Poker, again using test-driven development like last week. The comparison function will be <tt>int compare(ArrayList<Card> H1, ArrayList<Card> H2)</tt>, where a return value < 0 indicates that H1 would lose to H2, a return value > 0 means that H1 would beat H2, and a return value of 0 means H1 and H2 are "tied." | + | In this lab you will write a <tt>Comparator</tt> class <tt>ByHandValue</tt> to compare hands in ''5-card draw'' Poker, again using test-driven development like last week. The comparison function will be <tt>int compare(ArrayList<Card> H1, ArrayList<Card> H2)</tt>, where a return value < 0 indicates that H1 would lose to H2, a return value > 0 means that H1 would beat H2, and a return value of 0 means H1 and H2 are "tied." You '''must''' use the <tt>Card</tt> class provided -- do not make your own. |
| − | The ranking of hands is detailed [https://en.wikipedia.org/wiki/List_of_poker_hands here]. Assume that cards come from a standard 52-card deck with no wildcards, and aces can be high or low. | + | The ranking of hands is detailed [https://en.wikipedia.org/wiki/List_of_poker_hands here]. Assume that cards come from a standard 52-card deck with no wildcards, and aces can be high or low. This will be a complicated function -- please make it as modular as possible by calling other support functions. |
You should throw a <tt>PokerException</tt> if either H1 or H2 does not have exactly 5 cards, or if any of the cards are duplicates (either within or between hands). | You should throw a <tt>PokerException</tt> if either H1 or H2 does not have exactly 5 cards, or if any of the cards are duplicates (either within or between hands). | ||
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System.out.println(failure.toString()); | System.out.println(failure.toString()); | ||
| − | We will grade your lab '''strictly''' by how many of the ''N'' unit tests in our grading suite are passed. Since you can get <tt>compare()</tt> right 1/3 of the time just by chance, your lab score will be determined by a linear map from [N/3, N] tests passed to a score of [ | + | We will grade your lab '''strictly''' by how many of the ''N'' unit tests in our grading suite are passed. Since you can get <tt>compare()</tt> right 1/3 of the time just by chance, your lab score will be determined by a linear map from [N/3, N] tests passed to a score of [1, 4]. |
==Submission== | ==Submission== | ||
| − | Submit your <tt> | + | Submit your <tt>ByHandValue.java</tt> and <tt>HandComparisonTests.java</tt> on Sakai (be sure to add your name and section number to both). Do NOT submit <tt>Lab7.java</tt>. |
Latest revision as of 13:50, 1 May 2017
Preliminaries
- Make a new project with n = 7 (following these instructions)
- Name your main class "Lab7" (when creating a new module in the instructions above, in the Java class name field)
Instructions
Suppose you want to write a Poker game app based on the Card and Deck classes introduced earlier in the semester (see lecture 11 for code). Obviously, a core function would be to compare two hands and determine which one is better.
In this lab you will write a Comparator class ByHandValue to compare hands in 5-card draw Poker, again using test-driven development like last week. The comparison function will be int compare(ArrayList<Card> H1, ArrayList<Card> H2), where a return value < 0 indicates that H1 would lose to H2, a return value > 0 means that H1 would beat H2, and a return value of 0 means H1 and H2 are "tied." You must use the Card class provided -- do not make your own.
The ranking of hands is detailed here. Assume that cards come from a standard 52-card deck with no wildcards, and aces can be high or low. This will be a complicated function -- please make it as modular as possible by calling other support functions.
You should throw a PokerException if either H1 or H2 does not have exactly 5 cards, or if any of the cards are duplicates (either within or between hands).
This time, JUnit is required. Once again, you should create a suite of unit tests that make various hands and see if compare() works as it should. As, before, this is what your main() should contain:
Result result = JUnitCore.runClasses(HandComparisonTests.class); for (Failure failure : result.getFailures()) System.out.println(failure.toString());
We will grade your lab strictly by how many of the N unit tests in our grading suite are passed. Since you can get compare() right 1/3 of the time just by chance, your lab score will be determined by a linear map from [N/3, N] tests passed to a score of [1, 4].
Submission
Submit your ByHandValue.java and HandComparisonTests.java on Sakai (be sure to add your name and section number to both). Do NOT submit Lab7.java.
