ArrayHomework.java

import java.util.Random;

public class ArrayHomework {

    public static void main(String[] args) {

        int max = 20;
        double[] arr = new double[max];

        fillArray(arr);

        // Let's print the array for educational purposes.
        for (double d : arr) {
            System.out.println(d);
        }

        System.out.println("The index of the largest number in the array is: " + findIndexOfLargest(arr));
        System.out.println("The largest number in the array is " + findLargest(arr));

    }


    public static void fillArray(double[] myArray) {
        Random random = new Random();
        for (int i = 0; i < myArray.length; i++) {
            myArray[i] = random.nextDouble();
        }
    }

    public static int findIndexOfLargest(double[] myArray) {
        // double max = Arrays.stream(myArray).filter(i -> i >= 0).max().orElse(0);

        double max = 0;
        int location = 0;
        for (int i = 0; i < myArray.length; i++) {
            if (myArray[i] > max) {
                max = myArray[i];
                location = i;
            }
        }
        return location;
    }

    public static double findLargest(double[] myArray) {

        //int loc = findIndexOfLargest(myArray);
        //return myArray[loc];

        double max = 0;
        for (int i = 0; i < myArray.length; i++) {
            if (myArray[i] > max) {
                max = myArray[i];
            }
        }
        return max;

    }
}