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Added source files (Programmieren Tutorium)

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Martin Thoma 2013-11-05 19:39:03 +01:00
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presentations/Programmieren-Tutorium/Tutorium-09/SinglyLinkedList-Template/Gears.java Normal file
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/**
* This class models the gears. It is restricted to derailleur gears.
*
* @author Markus Iser, Martin Thoma
* @version 1.0
*/
public class Gears {
public static final int MIN_FRONT_SPROCKETS = 1;
public static final int MAX_FRONT_SPROCKETS = 3;
public static final int MIN_REAR_SPROCKETS = 1;
public static final int MAX_REAR_SPROCKETS = 10;
private int frontSprockets;
private int rearSprockets;
/** Price in cents. */
private final int price;
Gears(int frontSprockets, int rearSprockets, int price) {
setSprockets(frontSprockets, rearSprockets);
this.price = price;
}
/**
* Sets the sprocket numbers. Uses default-values if consisteny criteria are
* not met.
*
* @param sprockets
* @param rearSprockets
*/
void setSprockets(int sprockets, int rearSprockets) {
this.frontSprockets = sprockets;
this.rearSprockets = rearSprockets;
if (!(this.frontSprockets >= 1)) { // A.1
this.frontSprockets = 1;
} else if (!(this.frontSprockets < 4)) { // A.2
this.frontSprockets = 3;
}
if (this.rearSprockets < 1) { // B.1
this.rearSprockets = this.frontSprockets;
}
if (this.rearSprockets > 9) { // B.2
this.rearSprockets = this.frontSprockets * 3;
}
if (this.rearSprockets < this.frontSprockets) { // C.1
this.rearSprockets = this.frontSprockets;
} else if (this.rearSprockets > 3 * this.frontSprockets) { // C.2
this.rearSprockets = 3 * this.frontSprockets;
}
}
/**
* @return the number of gears as the number of sprocket-combinations
*/
int getNumberOfGears() {
return frontSprockets * rearSprockets;
}
/**
* @return the price of the gears
*/
int getPrice() {
return price;
}
}