不過遺憾的是無法將重復(fù)的載客車或載貨車不重復(fù)輸出，請問有大神可以解決嗎，代碼如下：

package?Car;
public?class?Car?{
private?String?name;
private?int?money;
private?int?passagerCapacity;
private?int?cargoCapacity;
public?Car(String?name,int?money,int?passagerCapacity,int?cargoCapacity){
this.name=name;
this.money=money;
this.passagerCapacity=passagerCapacity;
this.cargoCapacity=cargoCapacity;
}
public?String?getName(){
return?name;
}
public?int?getMoney(){
return?money;
}
public?int?getPassagerCapacity(){
return?passagerCapacity;
}
public?int?getCargoCapacity(){
return?cargoCapacity;
}
}

package?Car;
public?class?PickupCar?extends?Car{
public?PickupCar(String?name,int?money,int?passagerCapacity,int?cargoCapacity){
super(name,money,passagerCapacity,cargoCapacity);
}
}

package?Car;
public?class?PickUpSnow6?extends?Car{
public?PickUpSnow6(String?name,int?money,int?passagerCapacity,int?cargoCapacity){
super(name,money,passagerCapacity,cargoCapacity);
}
}

package?Car;
import?java.util.ArrayList;
import?java.util.Scanner;
public?class?User?{
public?void?play()?{
System.out.println("歡迎使用答答租車系統(tǒng):");
System.out.println("您是否要租車：1是0否");
Scanner?input?=?new?Scanner(System.in);
int?yesOrNo?=?input.nextInt();
if(yesOrNo?==?1){
Car?[]?carList?={new?PickupCar("AudiA4\t",500,4,0),new?PickupCar("Mazda6\t",400,4,0),new?PickUpSnow6("PickUpSnow6",450,4,2),new?PickupCar("GoldenDragonBus",800,20,0),new?Truck("SongHuaRiver",400,0,4),new?Truck("Iveco\t",1000,0,20)};
System.out.println("您可租車的類型及其價目表:");
System.out.println("序號"+"\t"+"汽車名稱"+?"\t\t"+?"租金(元/天)"+"\t"+"容量");
for(int?i?=?0;i<carList.length;i++){
System.out.println((i+1)+".\t"+carList[i].getName()+"\t"+carList[i].getMoney()+"\t"+"載人："+carList[i].getPassagerCapacity()+"人,載貨："+carList[i].getCargoCapacity()+"噸");
}
System.out.println("請輸入您要的汽車的數(shù)量:");
int?num?=?input.nextInt(),i?=?0;
ArrayList<Car>?userList=?new?ArrayList<Car>();
int?cost1=0,cost2=0;
int?cap1=0,cap2=0;
String?pickupCarName?=?"";
String?truckName?=?"";
while?(i?<?num)?{
System.out.println("請輸入第"?+?(i?+?1)?+?"車的序號:");
int?choose?=?input.nextInt()-1;
if(choose<0||choose>5){
System.out.println("輸入錯誤，請再次輸入序號：");
}else{
Car?currentCar?=?carList[choose];
userList.add(currentCar);
if(currentCar?instanceof?PickupCar){
pickupCarName?+=?currentCar.getName()+"?";
cost1?+=?currentCar.getMoney();
cap1?+=?currentCar.getPassagerCapacity();
i++;
}else?if(currentCar?instanceof?PickUpSnow6){
pickupCarName?+=?currentCar.getName()+"?";
truckName?+=?currentCar.getName()+"?";
cost1?+=?currentCar.getMoney();
cap1?+=?currentCar.getPassagerCapacity();
cap2?+=?currentCar.getCargoCapacity();
i++;
}else{
truckName?+=?currentCar.getName()+"?";
cost2?+=?currentCar.getMoney();
cap2?+=?currentCar.getCargoCapacity();
i++;
}
}
}
System.out.println("請輸入租車天數(shù):");
int?day?=?input.nextInt();
if(day?<=?0){
System.out.println("輸入有誤，請輸入租車天數(shù):");
day?=?input.nextInt();
}
System.out.println("您的賬單:");
System.out.println("***可載人的車有："?+?pickupCarName?+?"共載人："?+?cap1?+"人");
System.out.println("***可載貨的車有："?+?truckName?+?"共載貨："?+?cap2?+"噸");
System.out.println("***租車總價格："?+?day*(cost1?+?cost2)?+"元");
}else{
System.out.println("好的，已退出該系統(tǒng)");
}
input.close();
}
}

package?Car;
public?class?UserTest?{
public?static?void?main(String[]?args)?{
User?u1?=?new?User();
u1.play();
}
}