Question

我有一个学校项目，我应该使用Java在BlueJ制作汽车租赁应用程序。对于一部分，我有2个阵列，一个用于价格，一个用于汽车名称。我必须按价格的降序打印汽车的名称。我已设法使用冒泡排序按降序对价格数组进行排序，但在排序价格数组时，我无法弄清楚如何打印汽车的名称。请帮忙。

String carModel[] = {"A", "B", "C"}; //Names of cars
int costPerDay[] = {100, 75, 250}; //Rental cost per day
for(int x = 0; x < costPerDay.length-1; x++) { //Sort the Cost Per Day Array in descending order using bubble sort 
    for(int j = x + 1; j < costPerDay.length; j++) {
        if(costPerDay[x] < costPerDay[j]) {
            int t = costPerDay[x];
            costPerDay[x] = costPerDay[j];
            costPerDay[j] = t;
        }
    }
}

这是代码段。我需要按相应费用的降序打印汽车的名称。

提前致谢！

Answer 1

    String carModel[] = {"A", "B", "C"}; //Names of cars
    int costPerDay[] = {100, 75, 250}; //Rental cost per day
    for(int x = 0; x < costPerDay.length-1; x++){ //Sort the Cost Per Day Array in descending order using bubble sort 
    for(int j = x + 1; j < costPerDay.length; j++){
    if(costPerDay[x] < costPerDay[j]){
    int t = costPerDay[x];
    String s = carModel[x];
    costPerDay[x] = costPerDay[j];
    costPerDay[j] = t;
    carModel[x] = carModel[j];
    carModel[j] = s;
    }
    }
    }
for(int x = 0; x < carModel.length; x++){
 System.out.println(carModel[i]);
}

Answer 2

有一个技巧可以做到这一点。使用另一个指示顺序的数组。

    String carModel[] = {"A", "B", "C"}; //Names of cars
    int costPerDay[] = {100, 75, 250}; //Rental cost per day
    // Here's the trick - use an order array.
    int order[] = {0,1,2}; 
    for(int x = 0; x < costPerDay.length-1; x++){ //Sort the Cost Per Day Array in descending order using bubble sort 
        for(int j = x + 1; j < costPerDay.length; j++){
            if(costPerDay[order[x]] < costPerDay[order[j]]){
                int t = order[x];
                order[x] = order[j];
                order[j] = t;
            }
        }
    }

现在，您可以像carModel[order[i]]一样使用costPerDay[order[x]]进行打印。

需要打印与使用冒泡排序排序的数组平行的数组值

2 个答案: