There is an integer array with the size of N is given. Calculate sum of all numbers of the array with using two parallel threads. Your solution must calculate correct result in all cases. Write a Test class and test your solution with two different integer arrays. For example, arrayOne = 1, 2, 3, 4, 5 in this case the result must be 15. If array holds arrayTwo = 2, 2, 2, 2, then the result must be 8. Etc.