Midterm exam 2 review Sp2006: Unscramble the Code
Comments, Questions, Answers, Questions about Answers?
(Back to Midterm Exam 2 Review Sp2006)
I guess I'll try to unscramble one.....
A. public void mirrorHorizontalBottomToTop(){
Pixel topPixel = null;
Pixel bottomPixel = null;
int mirrorPoint = (int) (getHeight() / 2);
for (int x=0; x getWidth(); x++) {
for (int y=1; y mirrorPoint; y++){
topPixel = getPixel(x,(mirrorPoint - y));
bottomPixel = getPixel(x,(mirrorPoint + y));
topPixel.setColor(bottomPixel.getColor());
}
}
}
Does this look right?
Looks good to me... Personally, E was giving me a headache, but I think I got it– How's this look:
public Sound collect(){
Sound childSound;
CollectableNode node;
if(children!=null){
childSound=children.collect();
}else{
childSound=new Sound(1);
}
node=(CollectableNode) this.getNext();
if(this.getNext()!=null){
childSound=childSound.append(node.collect());
}
return childSound;
}
It's kinda weird, seems like one line in out of place, but I think it still works...
~Jim
The reason why E is giving you a headache is that I figured out, by putting this on last year's exam, that there's a much better way to write the code. Several students figured it out last semester.
You can always check these, before the exam. They're in your java-source. Mark Guzdial |
What is children in part E? It doesn't seem to be mentioned as a variable..
| children is a variable in the branch, remember? Mark Guzdial |
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