java - 将一个数组中的值除以另一数组中的值

Question

我正在尝试从单独的数组中获取值并执行除法数学。我已经创建了一种执行除法的方法，但我不断收到“错误的操作数...”错误。我已经搜索了又搜索，但找不到解决方案。我需要能够获取 tripMiles 中的值并将其除以加仑中的值。

import java.util.Scanner;

public class Week6Challenge {    
    public static void main(String[] args) {
        Scanner scan = new Scanner (System.in);
        int count = 0;
        //double miles = 0, gallons = 0;
        //Arrays
        String[] tripName;
        tripName = new String[11];
        double[] tripMiles;
        tripMiles = new double[11];
        double[] tripMPG;
        tripMPG = new double [11];
        double[] gallons;
        gallons = new double [11];

        //double miles = 0, gallons = 0;

        while (count <= 9){//start while
            System.out.println("Enter a description of this trip");
            tripName[count] = scan.next();

            System.out.println("How many miles did you drive?");
            tripMiles[count] = scan.nextDouble();

            System.out.println("How many gallons of gas did you use on this trip");
            gallons[count] = scan.nextDouble();
            count++;
        }//end while

        tripMPG[count] = answer(tripMiles, gallons);

        System.out.println("Trip Name \t Miles Traveled \t MPG");
        int k = 0;
        for(k = 0; k < 10; k++){
            System.out.println(tripName[k]+ "\t\t" + tripMiles[k] + "\t\t\t" + tripMPG[k]);
        }
    }
    public static double answer(double[] num1, double[] num2){
        return (num1/num2);
    }
}

Answer 1

您正在尝试划分两个数组，例如:

return (num1/num2);

这是无效的。

相反，如果您需要两个数组的长度或总和然后进行除法，则可以将所有元素相加，然后将两个值相除。