Write a Java program to implement a 3X3 integer array and print the sum of each row and each  column of that array. Take the array elements from console (keyboard) during the program  execution. You can use Scanner class.        Sample output:   Sum of elements of first row: 14  Sum of elements of second row: 13  Sum of elements of third row: -5  Sum of elements of first column: 1  Sum of elements of second column: 6  Sum of elements of third column: 14

Write a python program to print the prime numbers existing in an array. For instance, if A = [4, 7, 12, 3, 9], the output should be 7, 3.

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

Use Java language and the last digit of ID is a 7