Answered: Java Problem: Implementing a method to…

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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Question

Java

Problem: Implementing a method to print a cell's neighbors on a 2D array. The method's header is provided. The main method (do not alter it)w ill read N numbers to create the 2D array and it will call the method for you. Do not go out of the bounds of the 2D array.

I have attached what it should look like with the following input:

4 4

1 2 3 4 7 8 9 10 13 14 15 16 19 20 21 22

2 2

Code I have so far:

import java.util.Arrays;
import java.util.Scanner;

public class Problem3 {
public static void printNeighbours(int[][] data, int row, int col){

}
public static void main(String[] args) {
Scanner kb = new Scanner(System.in);
int[][] data = new int[kb.nextInt()][kb.nextInt()];

for (int i = 0; i < data.length; i++) {
for (int j = 0; j < data[0].length; j++) {
data[i][j] = kb.nextInt();
}
}

System.out.println("The 2D Array:");
for (int[] cols : data) {
System.out.println(Arrays.toString(cols));
}

int row = kb.nextInt();
int col = kb.nextInt();
System.out.printf("The centre point is: %d %d (row,col)\n\n", row,col);

printNeighbours(data, row, col);
}
}

1 The 2D Array:
2 [1, 2, 3, 4]
3 [7, 8, 9, 10]
4 [13, 14, 15, 16]
5 [19, 20, 21, 22]
6 The centre point is: 2 2 (row,col)
C.
7
8 {1,1}: 8
9 {1,2}: 9
10 {1,3}: 10
11 {2,1}: 14
12 {2,3}: 16
13 {3,1}: 20
14 {3,2}: 21
15 {3,3}: 22

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