Starting Out with Java: From Control Structures through Data Structures (3rd Edition)
3rd Edition
ISBN: 9780134038179
Author: Tony Gaddis, Godfrey Muganda
Publisher: PEARSON
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Question
Chapter 7, Problem 9SA
Program Plan Intro
Two-dimensional array:
A two dimensional array is also called as a multi-dimensional array; a multidimensional array is that all the identical arrays are put together into a single array.
- This is useful for storing same type of multiple sets of data in same place.
- The main advantage is that one-dimensional array can hold only one set of value, whereas, two-dimensional array can hold multiple sets of data in the form of rows and columns.
- The structure of a multi-dimensional array is lookalike a table (that is combination of rows and columns); it contains same type of columns.
- The first size declarator in the two-dimensional array represents row and the second size declarator represents column.
- The two dimensional array can have multiple length fields, which holds the number of rows.
- Each row in the two dimensional array has a length field which holds the number of columns.
Syntax:
The syntax of two dimensional arrays is as follows:
datatype array_name [number_of_rows][number_of_columns];
Explanation of Solution
b. Number of columns in the array:
Syntax:
The syntax of two dimensional arrays is as follows:
datatype array_name [number_of_rows][number_of_columns];
Explanation of Solution
c. Number of elements in the array:
Syntax:
The syntax of two dimensional arrays is as follows:
datatype array_name [number_of_rows][number_of_columns];
Given array definition:
double[][] sales = new double[8][10];
...
Explanation of Solution
d. Statement that stores a number in the last column of the last row in the array:
Syntax:
The syntax of two dimensional arrays is as follows:
datatype array_name [number_of_rows][number_of_columns];
Given array definition:
double[][] sales = new double[8][10];
There are 8 rows and 10 columns in the given two-dimensional array.
Index type of an array:
The index type of an array is an integer. An integer is a number without the fractional or decimal part...
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Problem Description - JAVA PROGRAMMING
Use a Two-dimensional (3x3) array to solve the following problem:
Write an application that inputs nine numbers, each of which is between 1 and 10, inclusive.
Display the array after the user inputs each value.
Rotate/flip the array by changing places. Make the rows columns and vice versa. You have to move the elements to their new locations.
Remember to validate the input and display an error message if the user inputs invalid data.
Documentation and the screenshot(s) of the results.
Example:
1 2 3
4 5 6
7 8 9
the result will be :
1 4 7
2 5 8
3 6 9
int Marks [20] = { 70,85, 60, 55,90,100,50};
For the above code, answer the following questions in the space provided below:
1. Find the size of Marks array.
2. How many number of elements are present in Marks array ?
3. Find the index value for last element in array
4. Find the index value for the element 60
5. Find the value of Marks[2] + Marks[0] in Marks array.
When you declare an array, what will all of the array’s elements have in common?
Chapter 7 Solutions
Starting Out with Java: From Control Structures through Data Structures (3rd Edition)
Ch. 7.1 - Write statements that create the following arrays:...Ch. 7.1 - Whats wrong with the following array declarations?...Ch. 7.1 - Prob. 7.3CPCh. 7.1 - Prob. 7.4CPCh. 7.1 - Prob. 7.5CPCh. 7.1 - Prob. 7.6CPCh. 7.1 - Prob. 7.7CPCh. 7.1 - Prob. 7.8CPCh. 7.2 - Prob. 7.9CPCh. 7.2 - Prob. 7.10CP
Ch. 7.2 - A program has the following declaration: double[]...Ch. 7.2 - Look at the following statements: int[] a = { 1,...Ch. 7.3 - Prob. 7.13CPCh. 7.3 - Write a method named zero, which accepts an int...Ch. 7.6 - Prob. 7.15CPCh. 7.7 - Recall that we discussed a Rectangle class in...Ch. 7.10 - Prob. 7.17CPCh. 7.11 - What value in an array does the selection sort...Ch. 7.11 - How many times will the selection sort swap the...Ch. 7.11 - Prob. 7.20CPCh. 7.11 - Prob. 7.21CPCh. 7.11 - If a sequential search is performed on an array,...Ch. 7.13 - What import statement must you include in your...Ch. 7.13 - Write a statement that creates an ArrayList object...Ch. 7.13 - Write a statement that creates an ArrayList object...Ch. 7.13 - Prob. 7.26CPCh. 7.13 - Prob. 7.27CPCh. 7.13 - Prob. 7.28CPCh. 7.13 - Prob. 7.29CPCh. 7.13 - Prob. 7.30CPCh. 7.13 - Prob. 7.31CPCh. 7 - Prob. 1MCCh. 7 - Prob. 2MCCh. 7 - Prob. 3MCCh. 7 - Prob. 4MCCh. 7 - Array bounds checking happens. a. when the program...Ch. 7 - Prob. 6MCCh. 7 - Prob. 7MCCh. 7 - Prob. 8MCCh. 7 - Prob. 9MCCh. 7 - Prob. 10MCCh. 7 - Prob. 11MCCh. 7 - To delete an item from an ArrayList object, you...Ch. 7 - Prob. 13MCCh. 7 - Prob. 14TFCh. 7 - Prob. 15TFCh. 7 - Prob. 16TFCh. 7 - Prob. 17TFCh. 7 - Prob. 18TFCh. 7 - True or False: The Java compiler does not display...Ch. 7 - Prob. 20TFCh. 7 - True or False: The first size declarator in the...Ch. 7 - Prob. 22TFCh. 7 - Prob. 23TFCh. 7 - int[] collection = new int[-20];Ch. 7 - Prob. 2FTECh. 7 - Prob. 3FTECh. 7 - Prob. 4FTECh. 7 - Prob. 5FTECh. 7 - Prob. 1AWCh. 7 - Prob. 2AWCh. 7 - Prob. 3AWCh. 7 - In a program you need to store the populations of...Ch. 7 - In a program you need to store the identification...Ch. 7 - Prob. 6AWCh. 7 - Prob. 7AWCh. 7 - Prob. 8AWCh. 7 - Prob. 9AWCh. 7 - Prob. 10AWCh. 7 - Prob. 11AWCh. 7 - Prob. 1SACh. 7 - Prob. 2SACh. 7 - Prob. 3SACh. 7 - Prob. 4SACh. 7 - Prob. 5SACh. 7 - Prob. 6SACh. 7 - Prob. 7SACh. 7 - Prob. 8SACh. 7 - Prob. 9SACh. 7 - Rainfall Class Write a RainFall class that stores...Ch. 7 - Payroll Class Write a Payroll class that uses the...Ch. 7 - Charge Account Validation Create a class with a...Ch. 7 - Charge Account Modification Modify the charge...Ch. 7 - Prob. 5PCCh. 7 - Drivers License Exam The local Drivers License...Ch. 7 - Magic 8 Ball Write a program that simulates a...Ch. 7 - Grade Book A teacher has five students who have...Ch. 7 - Grade Book Modification Modify the grade book...Ch. 7 - Average Steps Taken A Personal Fitness Tracker is...Ch. 7 - Array Operations Write a program with an array...Ch. 7 - 12.1994 Gas Prices In the student sample programs...Ch. 7 - Sorted List of 1994 Gas Prices Note: This...Ch. 7 - Name Search If you have downloaded this books...Ch. 7 - Population Data If you have downloaded this books...Ch. 7 - World Series Champions If you have downloaded this...Ch. 7 - 2D Array Operations Write a program that creates a...Ch. 7 - Prob. 18PCCh. 7 - Trivia Game In this programming challenge, you...Ch. 7 - Prob. 20PC
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