Design a class named Location for locating a maximal value and its location in a

Question

Design a class named Location for locating a maximal value and its location in a two-dimensional array. The class contains public data fields row, column, and maxValue that store the maximal value and its indices in a two-dimensional array with row and column as int types and maxValue as a double type. Write the following method that returns the location of the largest element in a two-dimensional array: public static Location locateLargest(double[][] a) The return value is an instance of Location. Write a test program that prompts the user to enter a two-dimensional array and displays the location of the largest element in the array. Here is a sample run:

Explanation / Answer

LocationTest.java

import java.util.Scanner;

public class LocationTest {

   public static void main(String[] args) {
       Scanner scan = new Scanner(System.in);
       System.out.print("Enter the number of rows and columns in the array: ");
       int rows = scan.nextInt();
       int cols = scan.nextInt();
       double d[][] = new double[rows][cols];
       System.out.println("Enter the array: ");
       for(int i=0; i<d.length; i++){
           for(int j=0; j<d[i].length; j++){
               d[i][j] = scan.nextDouble();
           }
       }
       Location l = locateLargest(d);
       System.out.println("The location of the largest element is "+l.maxValue+" at ("+l.row+", "+l.column+")");
      
   }
   public static Location locateLargest(double[][] a){
       double max = a[0][0];
       int row =0 , col=0;
       for(int i=0; i<a.length; i++){
           for(int j=0; j<a[i].length; j++){
               if(max<a[i][j]){
                   max = a[i][j];
                   row = i;
                   col = j;
               }
           }
       }
       Location l = new Location(row,col,max);
       return l;
   }
}

Location.java

public class Location {
   public int row,column;
   public double maxValue;
   public Location(int row, int column, double maxValue){
       this.row = row;
       this.column =column;
       this.maxValue = maxValue;
   }
  
}

Output:

Enter the number of rows and columns in the array: 3 4
Enter the array:
23.5 35 2 10
4.5 3 45 3.5
35 44 5.5 9.6
The location of the largest element is 45.0 at (1, 2)

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