Answered: Sum elements row by row) write a method…

Sum elements row by row) write a method that returns the sum of all the elements in a specified row in a matrix using the following header:

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter9: Advanced Array Concepts

Section: Chapter Questions

Problem 6RQ

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Concept explainers

Array

The simplest way to start thinking about an array is as a collection, or a set of elements. In programming, these elements may be constants, variables, functions and pointers.

Question

(Sum elements row by row) write a method that returns the sum of all the elements in a specified row in a matrix using the following header:

public static double sumRow(double [][] m, int rowIndex)

Write a test program that reads a 3-by-4 matrix and displays the sum of each row here is a sample run.

Enter a 3-by-4 matrix row by row:
1.5 2 34f
5.5 6 7 8
9.5 1 3
Sum of the elenents at row 0 is 10.5
Sum of the elements at row 1 is 26.5
Sum of the elements at row 2 is 14.5

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