Create a method called countingsort() and add it to the following sorting.java program that reads 4 integers n, a, b and k from any input file, generates n random integers and stores them in an arr[], prints arr[] formatted with k numbers per line, before and after count sorting.

import java.io.*;

import java.util.*;

// program reads 4 integers n, a, b and k from anyinputfile, generates n random

// integers and stores them in an arr[], prints arr[] formatted k numbers per line

public class sorting{

int freq[], arr[], a, b, n, k, range;

PrintStream prt = System.out

// This is the class constructor

sorting(){

prt.print("\tThis Java program reads 4 integers n, a, b and k" +

" \tfrom anyinputfile, generates n random integers and stores them in an arr[] and \t" +

"Prints arr[] formatted k numbers per line," +

"before and after count sorting." +

" \t\tTo compile: javac sorting.java " +

" \t\tTo execute: java sorting < anyinputfile");

try{

// open file inf

Scanner inf = new Scanner(System.in)

n = inf.nextInt(); //read n, no. of data

a = inf.nextInt(); //read a, lower range

b = inf.nextInt(); //read b, upper range

k = inf.nextInt(); //read k, per line

// close file inf

inf.close();

} catch (Exception e){

prt.printf(" Oops! Read Exception: %s" , e);

}

range = b - a + 1;

arr = new int[n];

freq = new int[range];

prt.printf(" \tINPUT: n = %3d, a = %4d, b = %4d, k = %4d", n, a, b, k);

}

private void generate(){

int i;

Random rand = new Random();

for (i = 0; i < n ; i ++)

arr[i] = rand.nextInt(range) + a;

}

//Print arr[] formatted, k elements per line

private void printarr(){

int j;

for (j = 0; j < n ; j ++){

prt.printf("%4d ", arr[j]);

if ((j+1) % k == 0)

prt.printf(" \t");

}

}

// main program

public static void main(String args[]) throws Exception{

//create an instance of a class

sorting h = new sorting();

//call generate method

h.generate();

System.out.printf(" \t arr[] contents before count sorting: \t");

//call printarr method

h.printarr();

//call countingsort method

g.countingsort();

System.out.printf(" \t arr[] contents after count sorting: \t");

//call printarr method

h.printarr();

System.out.printf(" \tAuthor: Date: " +

java.time.LocalDate.now());

}

}

//please help me I made a code but it doesn't sort properly