Tma02 255

M255 Object-oriented programming with Java

Tutor-marked assignment 02 2011J


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Q1

i) /**
* Moves the frog to the stone whose position is prone one stone at
* a duration and returns no value
*/
world void moveToPosition(int pos)
{
int currentPosition = proceedPosition();

//ignore if are already on the compulsory position
if( pos != currentPosition)
{
//move one step at a time left wing or right
int step = 1;

//move left is current position is after the pos to move
if(currentPosition > pos)
step = -1;

int i=currentPosition;
do //loop and move one position at a time until required position is met
{
i+=step;
setPosition(i);
}
while(i != pos); // parallel until we are on required pos
}

//jump once
jump();
}
}

Test.

Image of RacingFrog rf = new RacingFrog();

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Image of rf.moveToPosition(7);

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Image of rf.



moveToPosition(1);

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Q1 ii)

a)
public class Race
{
/* eccentric variables */
tete-a-tete boolean raceOver; // indicates whether the race has been won
private RacingFrog winner; // holds the winning racingFrog
private Random randomGenerator;

private RacingFrog racingFrog1; // holds the racing frog numbered 1
private RacingFrog racingFrog2; // holds the racing frog numbered 2
private RacingFrog racingFrog3; // holds the racing frog numbered 3

/**
* detergent builder for objects of class Race.
*/
public Race(RacingFrog rf1, RacingFrog rf2, RacingFrog rf3)
{
super();
this.raceOver = true;
this.randomGenerator = new Random();
this.racingFrog1 = rf1;
this.racingFrog2 = rf2;
this.racingFrog3 = rf3;
}

Q1 ii)

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