Exercise
09/20/2006
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Counting and Hurdles
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Due: Monday, September 25
8am
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Relevant Reading:
- Handout from class (not available on line) and class notes
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Chapters 5 and 6 of the Karel J. Robot text
Assignment: (worth 10 exercise points)
Get the ex09-20.zip file. Use the
files
in this folder as your basis for this assignment.
Use the
files
in this folder as your basis for this assignment.
SPECIAL NOTES:
- You may not use the anyBeepersInBeeperBag() test for this exercise.
- Do all of this in the Application file. This is easier than creating a new class (which is extra credit).
a) Run the program as given and look at the world
"hurds1.txt". You will see a series of hurdles.
b) Write a program that has the robot start in the lower left
corner and place one beeper in each of the first 10 intersections on
the first row.
c) Modify the program to ask the user on how many of the intersections on the first row
should the robot place beepers on (ie, generalize 10).
d) Modify the program to ask the user how many beepers there should be on each of the
intersections. (ie generalize the above so that there may be more
than one beeper on each intersection.) Put the same number of
beepers on each intersection. (ie, only ask the user for one
number of beepers.)
e) Make sure that the robot starts out with exactly enough
beepers to perform the task.
f) Make sure your program works in any world that has hurdles
(ie hurds1, hurds2, hurds3, and hurds4). NOTE: hurds1
and hurds2 are straightforward. Hurds3 and hurds4 require a
little more effort.
Extra credit options:
- Once the first robot is done, have a second robot start from
the lower left and place more beepers on the intersections. One
beeper on the first intersection, two beepers on the second
intersection, three beepers on the third intersection, etc.
- Make sure that the second robot starts out with exactly enough
beepers to perform the task.
- Redo the assignment. This time, create a new robot class with a
method called beeperOnNextIntersection that moves the robot to the
other side of the wall and places a beeper. Your
Application should now call that method rather than doing everything
right there. This method will in part c have to take a parameter to determine how many beepers to put down.
Handin:
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Be sure to read the general handin instructions on the exercises page.
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Rename the folder containing all of the files to be
"lastname-firstname-100SectionLetter-diagonal". For example, if I were in Section Z, I would rename my folder to
be: "McElfresh-Scott-100Z-diagonal"
(without the quotes).
- Create a zip file of this folder, with the same name as the folder (except
with the .zip ending this time). Instructions for zipping can be found in
the system and software handouts linked on the main course page.
- Submit this file via the electronic
handin. If you have problems, contact me.
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