Minimum Absolute Difference in an Array HackerRank Solution - java

Minimum Absolute Difference in an Array HackerRank Solution - java  

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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 'minimumAbsoluteDifference' function below.

     *

     * The function is expected to return an INTEGER.

     * The function accepts INTEGER_ARRAY arr as parameter.

     */

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

        Integer min = Integer.MAX_VALUE;

        Collections.sort(arr);

        for(int i=1;i<arr.size();i++){

            int diff = Math.abs(arr.get(i-1)-arr.get(i));

            if(diff<min){

                min = diff;

            }

        }

        return min;

    }

}

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.minimumAbsoluteDifference(arr);

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

        bufferedWriter.newLine();

        bufferedReader.close();

        bufferedWriter.close();

    }

}