17. 2D Array Operations Write a program that creates a two-dimensional array initialized with test data. Use any primitive data type that you wish. The program should have the following methods: .getTotal. This method should accept a two-dimensional array as its argument and return the total of all the values in the array. .getAverage. This method should accept a two-dimensional array as its argument and return the average of all the values in the array. • getRowTotal. This method should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a row in the array. The method should return the total of the values in the specified row. • getColumn Total. This method should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a column in the array. The method should return the total of the values in the specified column. getHighest InRow. This method should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a row in the array. The method should return the highest value in the specified row of the array. • get Lowest InRow. This method should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a row in the array. The method should return the lowest value in the specified row of the array. Demonstrate each of the methods in this program.

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

Section: Chapter Questions

Problem 1PE

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Programming Project #3: 2D Array Operations Complete Programming Challenge #17 found on page 491 of the text. Include the following modifications: Input the data from a file. Provide the ability to have the user enter a file name on the command line at startup. If no command line argument is provided, then prompt the user for a filename. The first line of the file contains the number of rows in the array. Each subsequent record in the file corresponds to a row in the array. If errors occur while accessing the file or the data is invalid, display an appropriate message and exit. (In Java)

17. 2D Array Operations
Write a program that creates a two-dimensional array initialized with
test data. Use any primitive data type that you wish. The program
should have the following methods:
• getTotal. This method should accept a two-dimensional array as
its argument and return the total of all the values in the array.
.getAverage. This method should accept a two-dimensional array
as its argument and return the average of all the values in the array.
• getRowTotal. This method should accept a two-dimensional array
as its first argument and an integer as its second argument. The
second argument should be the subscript of a row in the array. The
method should return the total of the values in the specified row.
• getColumnTotal. This method should accept a two-dimensional
array as its first argument and an integer as its second argument. The
second argument should be the subscript of a column in the array.
The method should return the total of the values in the specified
column.
• getHighest InRow. This method should accept a two-dimensional
array as its first argument and an integer as its second argument. The
second argument should be the subscript of a row in the array. The
method should return the highest value in the specified row of the
array.
• get LowestInRow. This method should accept a two-dimensional
array as its first argument and an integer as its second argument. The
second argument should be the subscript of a row in the array. The
method should return the lowest value in the specified row of the
array.
Demonstrate each of the methods in this program.

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