Write a method getRowx that has 2 parameters, a two-dimensional array of int []

Question

Write a method getRowx that has 2 parameters, a two-dimensional array of int [] [] labeled data and an int labeled row. Note that row for humans start form 1. The method will return a single dimension array of .nt containing the row of interest. Example: (Note, this is just an example, of a 2D array and how you would call method getRowx; your method will work on any size two-dimensional array) Example, if table 1 was Then, int[] w = getRowx(table 1, 2) would return We were asking getRowx to return the 2^nd row from tabl1. This is just an example method should work on any 2d array and any row.

Explanation / Answer

Please follow the code and comments for description :

CODE :

import java.util.Arrays; // required imports
import java.util.Scanner;

public class RowArray { // class to run the code

    public static void main(String[] args) { // driver method
      
        Scanner sc = new Scanner(System.in); // scanner class to get the dat from the user
        System.out.println("Please Enter the Dimensions : "); // prompt for the user to enter the data
        System.out.println("Row length : "); // mesage to user
        int rows = sc.nextInt(); // get the row length
        System.out.println("Column length : "); // message to the user
        int columns = sc.nextInt(); // get the column length
        int table[][] = new int[rows][columns]; // initialisae the size of the array
      
        System.out.println("Enter the Elements Data : "); // message to the user
        for (int i = 0; i < rows; i++) { // iterate over the rows
            for (int j = 0; j < columns; j++) { // iterate over the columns
                table[i][j] = sc.nextInt(); // get the elements data             
            }
        }
        int res[] = getRowx(table, 2); // call the method to return the row data
        System.out.println("Resultant Data row is : " + Arrays.toString(res)); // print the data to console
    }
  
    public static int[] getRowx(int data[][], int row) { // method initialisation
      
        int a[] = new int[data[0].length]; // temporary array
      
        for (int m = 0; m < data.length; m++) { // iterate over the row length
            if (m == (row - 1)) { // check for the desired row
                for (int n = 0; n < data[0].length; n++) { // iterate if the row is selected one over the columns
                    a[n] = data[m][n]; // save data to a temp array
                }              
            } else {
                continue;
            }
        }
        return a; // return the array
    }
}

OUTPUT :

Please Enter the Dimensions :
Row length :
2
Column length :
3
Enter the Elements Data :
1
2
3
4
5
6

Resultant Data row is : [4, 5, 6].

Hope this is helpful.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.