Create a project called Inlab10 and make a class called Data. The only instance

Question

Create a project called Inlab10 and make a class called Data. The only instance variable in Data is a 2D int array. Make the constructor take the number of row and columns and create the array. Make a method that prints the array. Make a method that fills the array with random nits between and including 0 and 9. Make a method that find the sum of each row in the array and returns those values in an array (i.e. an array of row sums). Do not print the sums, return an array of them. Make a method that checks if any column has the consecutive values in 1' 2' 3' anywhere in that column. If some column does, return true. Return false if not. Make a Driver that does some simple tests of your class.

Explanation / Answer

Data.java

import java.util.Random;

public class Data {
   // Creating an array
   int arr[][];

   // Parameterized constructor
   public Data(int row, int column) {
       super();
       this.arr = new int[row][column];
   }

   // Method which will display the array
   public void printArray() {
       for (int i = 0; i < arr.length; i++) {
           for (int j = 0; j < arr[0].length; j++) {
               System.out.print(arr[i][j] + " ");
           }
           System.out.println();
       }
   }

   /*
   * Method which will populate the array elements with random values
   */
   public void fillArray() {
       Random r = new Random();
       for (int i = 0; i < arr.length; i++) {
           for (int j = 0; j < arr[0].length; j++) {
               arr[i][j] = r.nextInt((9 - 0) + 1) + 0;
           }
       }
   }

   // Displaying the sum of each row in the array
   public int[] sumOfEachRow() {
       int sum;
       int sumArr[] = new int[arr.length];

       for (int i = 0; i < arr.length; i++) {
           sum = 0;
           for (int j = 0; j < arr[0].length; j++) {
               sum += arr[i][j];
           }

           sumArr[i] = sum;
       }
       return sumArr;
   }

   // checking whether any column is having consecutive 1 and 2 and 3
   public boolean findConsecutive123() {

       int count = 0;

       for (int i = 0; i < arr.length; i++) {
           for (int j = 0; j < arr[i].length; j++) {
               if (j < arr[0].length - 3) {
                   if (arr[i][j] == 1) {
                       count++;
                       if (arr[i][j] == 2) {
                           count++;
                           if (arr[i][j] == 3) {
                               count++;
                           }
                       }
                   }
                   if (count == 3)
                       return true;
               }
           }
           count = 0;
       }
       return false;
   }

}

__________________

Driver.java

import java.util.Scanner;

public class Driver {

   public static void main(String[] args) {
       //Declaring variables
       int row,column;

       //Scanner object is used to get the inputs entered by the user
       Scanner sc=new Scanner(System.in);
      
       //Getting the row and column size
       System.out.print("Enter the row size :");
       row=sc.nextInt();
       System.out.print("Enter the column size :");
       column=sc.nextInt();
      
       //Creating an array
       int arr[]=new int[row];
      
       //Creating an Data class object
       Data d=new Data(row,column);
      
       //calling the methods
       System.out.println("Displaying the 2-D Array:");
       d.fillArray();
       d.printArray();
       arr=d.sumOfEachRow();
       for(int i=0;i<row;i++)
       {
           System.out.println("Displaying the sum of Row "+(i+1)+":"+arr[i]);
          
       }
      
       boolean bool=d.findConsecutive123();
       if(bool)
           System.out.println("There is consecutive 1 , 2 , 3 elements in the array");
       else
           System.out.println("There is no consecutive 1 , 2 , 3 elements in the array");

   }

}

_______________________

Output:

Enter the row size :5
Enter the column size :5
Displaying the 2-D Array:
5 8 3 3 6
9 4 1 9 8
0 5 7 1 6
1 1 0 2 1
2 8 1 1 1
Displaying the sum of Row 1:25
Displaying the sum of Row 2:31
Displaying the sum of Row 3:19
Displaying the sum of Row 4:5
Displaying the sum of Row 5:13
There is no consecutive 1 , 2 , 3 elements in the array

______________Thank You

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