Programming Exercise 8.5 describes how to perform matrix addition. Suppose

Programming Exercise 8.5 describes how to perform matrix addition. Suppose you have multiple processors, so you can speed up the matrix addition. Implement the following method in parallel.

Write a test program that measures the execution time for adding two 2,000 * 2,000 matrices using the parallel method and sequential method, respectively.

Write a method to add two matrices. The header of the method is as follows:

public static double [][] addMartix(double[][] a, double[][] b)

In order to be added, the two matrices must have the same dimensions and the same or compatible types of elements. Let c be the resulting matrix. Each element cij is aij + bij. For example, for two 3 × 3 matrices a and b, c is

Write a test program that prompts the user to enter two 3 × 3 matrices and displays their sum. Here is a sample run:

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