Java 一维数组

/**
 * Java 一维数组
 * dataType[] arrayRefVar = new type[typeLength1];
 */
public class learn_13_1 {
    public static void main(String[] args) {
        int size = 10;
        double[] arrayDouble = new double[size];
        for (int i = 0; i < size; i++){
            arrayDouble[i] = Math.random();
        }
        for (int i = 0; i < size; i++){
            System.out.println(arrayDouble[i]);
        }
        System.out.println("=================");
        for (double array: arrayDouble
             ) {
            System.out.println(array);
        }
        System.out.println("=================");
        System.out.println(printArray(arrayDouble));
        System.out.println("=================");
        for (double array: reverse(arrayDouble)
        ) {
            System.out.println(array);
        }
    }


    public static double printArray(double[] arrays){
        double d = 0;
        for (double array:arrays
             ) {
            d = d+array;
        }
        return d;
    }

    public static double[] reverse(double[] lists) {
        int length = lists.length;
        for (int i = 0; i < length; i++){
            lists[i] = lists[i] * 100;
        }
        return lists;
    }

}