Write a Java method that inputs an array of double values, prints this array, reverses the contents in an array and prints the array with reversed contents.   (Example:  [ 3.5   6.2   2.9   5.1   4.9   7.4   8.3]  -> [8.3   7.4   4.9   5.1   2.9   6.2   3.5]

Write a java program (class) called Grades to do the following. Must use an array. Ask the user for 20 grades. Get from the user each grade and fill an array with the grades. Find the average of the elements of the array. Print how many grades are smaller than the average. To get you started, your program code will begin as follows: import java. util. *; //includes Scanner public class Grades { public static void main(String[] args) { //begins main method

Using JAVA, write a method that swaps two rows of a two-dimensional array. The row indices to be swapped are passed as parameters to the method (Assume row indices are valid indices). Write a test program to demonstrate correct operation of the method.

Needs to br written in java: printPattern (int a) – A void method which takes user input as a parameter and generates 5 multiples of the input and stores the multiples in the array and finally prints the numbers in the following pattern (See expected output)Note: Use the array to print the numbers   Enter a number : 4 Multiples of 4 are stored in an array – [4,8,12,16,20]  4   4 8   4 8 12  4 8 12 16  4 8 12 16 20