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...
Want to see the full answer?
Check out a sample textbook solutionChapter 7 Solutions
MyLab Programming with Pearson eText -- Access Card -- for Starting Out with Java: Early Objects (Myprogramminglab)
- (Data processing) Write a program that uses an array declaration statement to initialize the following numbers in an array named slopes: 17.24, 25.63, 5.94, 33.92, 3.71, 32.84, 35.93, 18.24, and 6.92. Your program should locate and display the maximum and minimum values in the array.arrow_forwardThe _________ indicates the number of elements, or values, an array can hold.arrow_forwardJAVA PROGRAM Chapter 7. PC #16. 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…arrow_forward
- іmрlеmеոt thе fоllоwіոg ехрrеssіоո іո аssеmbly lаոguаgе: Create a DWORD array named ‘z’ of size 3 using DUP operator. Leave the array ‘z’ uninitialized. You can denote the items in the array as [ z0, z1, z2]z0, z1, z2] , where z0z0 is the first item, z1 z1 is the second item, z2z2 is the third item Update each array item using the following expressions. z0=x+130z0=x+130 z1=y−x+ z0z1=y−x+ z0 z2=r+x−z1z2=r+x−z1 Where x, y, r are 16-bit integer memory variables. x = 10, y = 15, r = 4 Use mov, movzx, movsx, add, sub instructions only. (hint: Do not alter the value of x, y and r during the computation. Transfer them to appropriate registers to do computation) At the end, open memory window to see the variable z stored in memory (little endian format). Use the debugger to verify your answer.arrow_forwardLook at the following array definition.int numberArray[9][11];Write a statement that assigns 145 to the first column of the first row of this array.Write a statement that assigns 18 to the last column of the last row of this array.arrow_forwardc++ 1. Does the element of an array have a default value? 2. Which of the following statements are valid array declarations? double d[30]; char[30] r;arrow_forward
- C++ program This assignment is about array operations. Create an array with 1000 items and fill it with random numbers from the range of -100, 100 (including -100 and 100). Then, your program asks user to enter a number. The program keeps running until user enters a out-of-range (-100,100) number. An example run is given below. Enter a number: -4Frequency of -4: 54Enter a number: 4Frequency of 4: 15Enter a number: 35Frequency of 35: 8Enter a number: 43Frequency of 43: 2Enter a number: 101Bye...arrow_forwardLook at the following array definition: int values[10]; How many elements does the array have? What is the subscript of the first element in the array? What is the subscript of the last element in the array? Assuming that an int uses 4 bytes of memory, how much memory does the array use?arrow_forwardProblem 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 9arrow_forward
- USE C++ PROGRAMMING LANGUAGE Write a program that simulates a lottery. The program should have an array of five integers named winningDigits, with a randomly generated number in the range of 0 through 9 for each element in the array. The program should ask the user to enter five digits and should store them in a second integer array named player. The program must compare the corresponding elements in the two arrays and count how many digits match. For example, the following shows the winningDigits array and the Player array with sample numbers stored in each. There are two matching digits, elements 2 and 4. WinningDigits 7 4 9 1 3 player 4 2 9 7 3 Once the user has entered a set of numbers, the program should display the winning digits and the player’s digits and tell how many digits matched.arrow_forwardLook at the following array definition String[] Students= {"St1", "St222", "St3333"}; what will be returned by Students.length what will be returned by Students[1].length() how many total elements can be saved in this arrayarrow_forward2.3 Write a program that allows you to create an integer array of 18 elements with the following values: int A[] = {3, 2, 4, 5, 6, 4, 5, 7, 3, 2, 3, 4, 7, 1, 2, 0, 0, 0}. Perform the following computations, a.Compute the sum of elements from index 0 to 14 and stores it at element 15 b.Compute the average of all numbers and stores it at element 16 c.Identifies the smallest value from the array and stores it at element 17 6.2 Create a Product class with Product Id & Product Name. Write a program to accept information of 10 products and store that in HashSet. Do following operations, a.Search a particular product in the HashSet.b.Remove a particular product from the HashSet by using product id.(Referbelow table for the product list) Product Id Product Name P001 Maruti 800 P002 Maruti Zen P003 Maruti Dezire P004 Maruti Alto 6.3 Implement LinkedListclass for this problema.Create an…arrow_forward
- Microsoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENTC++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning
- Programming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:CengageProgramming with Microsoft Visual Basic 2017Computer ScienceISBN:9781337102124Author:Diane ZakPublisher:Cengage LearningC++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology Ptr