equalize the array hackerrank solution in java

 equalize the array hackerrank solution in java

for explanation watch video ::

code::

import java.io.*;

import java.math.*;

import java.security.*;

import java.text.*;

import java.util.*;

import java.util.concurrent.*;

import java.util.function.*;

import java.util.regex.*;

import java.util.stream.*;

import static java.util.stream.Collectors.joining;

import static java.util.stream.Collectors.toList;

class Result {

    /*

     * Complete the 'equalizeArray' function below.

     *

     * The function is expected to return an INTEGER.

     * The function accepts INTEGER_ARRAY arr as parameter.

     */

    public static int equalizeArray(List<Integer> arr) {

       

        HashMap<Integer,Integer> hm = new HashMap<>();

        for(int i=0;i<arr.size();i++){

            hm.put(arr.get(i),hm.getOrDefault(arr.get(i),0)+1);

        }

        

        int max = Integer.MIN_VALUE;

        for(Map.Entry<Integer,Integer> e : hm.entrySet()){

            int value = e.getValue();

            if(value > max){

                max = value;

            }

        }

       

        return arr.size()-max;

    }

}

public class Solution {

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

        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));

        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

        int n = Integer.parseInt(bufferedReader.readLine().trim());

        List<Integer> arr = Stream.of(bufferedReader.readLine().replaceAll("\\s+$", "").split(" "))

            .map(Integer::parseInt)

            .collect(toList());

        int result = Result.equalizeArray(arr);

        bufferedWriter.write(String.valueOf(result));

        bufferedWriter.newLine();

        bufferedReader.close();

        bufferedWriter.close();

    }

}