S.J.S. tutorial 12: more questions about references
SECTION(12, Tutorial 12)
m5_question(BO(Question 12.1:) Write constructors for the classes
CLSS(SportsShoe) and CLSS(Runner) below, by looking at the MAIN function
to see how many arguments each constructor has.
m4_begin_indent
NU()m4_include(sjs-tutorials/RunnerTest.m4)
m4_end_indent
)
m5_question(BO(Question 12.2:) In the CLSS(Runner) class, write the
private method TT(computeSpeed) that has no arguments and returns a
double-precision floating point value that equals the runner's running
speed. Note that the speed of a runner is determined by multiplying
their TT(speed) property with the TT(speedBoost) property of the shoes
that they are wearing. For example, Speedy Gonzalez's running speed =
55 * 2.0 = 110.0.)
m5_question(BO(Question 12.3:) Fix the TT(race) method so that it
checks for a draw.)
m5_question(BO(Question 12.4:) By copying the TT(race) method,
write a three-parameter TT(race) method for racing three runners
against each other. Two methods in the same class with the same name
is called EM(overloading) in Java. Add a call to this method from the
MAIN function.)
m5_question(BO(Question 12.5:) What is the difference between a
method and a function? Write a one parameter method TT(raceAgainst)
that behaves exactly like two-parameter function TT(race). There are
two ways of doing this, one is to optionally use the THIS keyword
rather than one of the parameters TT(r1) or TT(r2). The second way is
for TT(race) to simply call TT(race) using THIS as one the the
arguments to the function.)
m5_question(BO(Question 12.6:) Is it true that any method can be
re-worked into a function and vice versa?)
m5_question(BO(Question 12.7:) The TT(swapShoes) method in the
CLSS(Runner) class swaps the shoes of two runners. Add some code to the
MAIN function to swap the shoes of two runners and verify that the
shoes do indeed get swapped.)
m5_question(BO(Question 12.8:) Write a method called TT(swapNames)
that swaps the names of two runners. You can put this function into
any class but it makes the most sense to put it into the CLSS(Runner)
class since it has two CLSS(Runner) parameters.)
m5_question(BO(Question 12.9:) Write a method TT(swapSpeeds) that
swaps the TT(speed) properties of two runners.)
