First, write a Java method merge that takes as parameter a non-empty double array representing employees' salaries. The method merges the values of every 2 adjacent elements. put the merged values at the beginning of the array, and put 0 in the remaining positions. Suppose that the original array will contain an even number of elements. Second, write two java methods readArray (int[] a) and printArray (int[]a) that reads/writes the elements of an array passed in parameter from/to the standard input/output. Finally, Use the following main method to test your different methods: public class Mergesalary private static Scanner input = new Scanner(System.in); public static void main(String[] args) double [] salaries = new double [10]; System.out.print("Enter 10 salaries: "); readArray (salaries); merge (salaries); System.out.print("Salaries after merge: "); printArray (salaries); } } Hint: For the method merge, you can work on the same array or use a temporary array. Run: Enter 10 salaries: 1000 1000 2000 2000 3000 3000 4000 4000 5000 5000 Salaries after merge: 2000.00 4000.00 6000.00 8000.00 10000.00 0.00 0.00 0.00 0.00 0.00

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

Write a Java program that will allow the user to play a hangman game repeatedly until theychoose to stop. The game should randomly choose a secret word from a pre-set list of wordsfor the user to guess. Store the list of words available for play in an array so you can randomlychoose them by index during game play.During a turn, the user will guess one letter at a time. Each letter in the secret word shoulddisplay as an asterisk until the letter is guessed by the user. When a correct letter is guessed,the letter should be displayed in the correct position in place of the asterisk. The user hangshimself with the 8th wrong guess and loses the game.Make a character array to hold the characters and asterisks representing the word beingguessed. You can change the contents of this array as the letters are guessed and revealed. Inother words, this array can be used to display the current state of the secret word each round.Here is the list of words the game should choose from for the secret…

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.