CompSci 4 - Classwork - Nov 22, 2005
5 pts
Today's classwork goes along with Chapter 10, section 2.
You will be manipulating an array.
- In a new Alice world, add 6 different people to the world.
Then add in an ArrayVisualization and initialize it with the six people
from
your world.
- Write a world method called PrintAllHeights that prints the
heights of all the people in the array. You should use loop (complicated
version)
and print the height of the item in the index position of the array.
That is, there should be just one print statement in the method.
- In world.myfirstmethod, call the PrintAllHeights method and
note which person is the shortest and which is the tallest.
- Write the world function objectWithTallestHeight that returns
the object in the array that has the tallest height. You should use a loop
(complicated version) to go through the array and determine which one is
the tallest.
- In myfirstmethod, add code that calls objectWithTallestHeight
and makes the person with the tallest height turn around once.
- In myfirstmethod, add code that makes one of the people who is not the
tallest person in the array to
resize to be twice as big. Follow that with code
that calls objectWithTallestHeight
and makes the person with the tallest height turn around once (it should be
a different person this time).
- Write the world function indexOfSmallestHeight that returns
the index position of the person in the array with the smallest height. (note this
returns
the index, not the object).
- Add code to the beginning of world.myfirstmethod to make the person
with the smallest height move up one meter and then move down one meter.
You should call indexOfSmallestHeight to determine where the
smallest
person is.
- In world.myfirstmethod, right after the code that resizes someone to
twice as big, add code to resize a different person who is not the
smallest, to resize to 1/2 their size.
- At the end of world.myfirstmethod, add code to make the smallest
person
go up one meter and then go down one meter (it should be a different person
this time).
If you finish early, feel free to embelish your animations.