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

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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(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 3 4 -Enter
5.5 6 7 8 PEnter
9.5 1 3 1 -Enter
Sum of the elements 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
Transcribed Image Text:Enter a 3-by-4 matrix row by row: 1.5 2 3 4 -Enter 5.5 6 7 8 PEnter 9.5 1 3 1 -Enter Sum of the elements 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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