Problem

(Sum the major diagonal in a matrix) Write a method that sums all the numbers in the major...

(Sum the major diagonal in a matrix) Write a method that sums all the numbers in the major diagonal in an n × n matrix of double values using the following header:

public static double sumMajorDiagonal(double[][] m)

Write a test program that reads a 4-by-4 matrix and displays the sum of all its elements on the major diagonal. Here is a sample run:

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Solutions For Problems in Chapter 8

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