Concurrency (a) Using Java ForkJoin Framework, write code to solve the following problem, given an array of random integers, it is required to reverse the order of elements into a new array. Some of the code is provided below for you. . import java.util.concurrent.ForkJoinPool; import java.util.concurrent.RecursiveAction; public class Main { static final ForkJoinPool fjPool = new ForkJoinPool(); static int[] reverse(int[] array) { // ADD A LINE HERE fjPool.invoke(new Reverse(answer,array,0,array.length)); // DO NOT CHANGE // ADD A LINE HERE } } // DEFINE A CLASS HERE

. (b) Discuss a thread safe coding design consideration when two elements in a 2-Dimensional array need to be swapped, think of the 2-Dimensional array as a matrix. Implement a java code method called swap to be thread safe and deadlock free.