Homework SourseJava Programming Write your own source code with comments Lo
Java Programming. Write your own source code with comments.
(Locate the largest element) Write the following method that returns the location of the largest element in a two-dimensional array. public static int[] locateLargest(double[][] a) The return value is a one-dimensional array that contains two elements. These two elements indicate the row and column indices of the largest element in the two-dimensional array. 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:
Enter the number of rows and columns of 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 at (1, 2)
Solution
//java program with main and method to find largestindex in array
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be \"Main\" only if the class is public. */
class Codechef
{
//method to find largest indext of an element in the array
public static int[] locateLargest(double[][] a,int r, int c)
{
double max = a[0][0];
int []largest = new int[2];
int k = 0;
//find max number
for(int i = 0; i < r ; i++)
{
for(int j = 0; j < c ; j++)
{
if( max < a[i][j])
{
max = a[i][j];
}
}
}
//now find index of max number
for(int i = 0; i < r ; i++)
{
for(int j = 0; j < c ; j++)
{
if(max == a[i][j])
{
largest[k] = i;
largest[k+1] =j ;
}
}
}
return largest;
}
public static void main (String[] args) throws java.lang.Exception
{
Scanner in = new Scanner(System.in);
//declare int variables to hold rows and cols
int rows,cols;
//take user input for rows and cols
System.out.printf(\" Enter the number of rows and columns of the array: \");
rows = in.nextInt();
cols = in.nextInt();
// declare float array
double[][]array =new double[rows][cols];
//take user input for array elements
System.out.printf(\"\ Enter the array: \");
for(int i = 0; i < rows ; i++)
{
for(int j = 0; j < cols ; j++)
{
array[i][j] = in.nextFloat();
}
}
//call the function locateLargest function
int []largest = locateLargest(array,rows,cols);
//print indext of largest element in array
System.out.printf(\"\ The location of the largest element is at (%d %d)\ \",largest[0],largest[1]);
}
}
-------------------------------------------------------------------------------------------------
//output same as mentioned
Enter the number of rows and columns of 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 at (1, 2)
